NCERA_old137: Soybean Diseases

(Multistate Research Coordinating Committee and Information Exchange Group)

Status: Inactive/Terminating

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[06/10/2015] [05/26/2016] [06/15/2017] [04/10/2018] [05/06/2019]

Date of Annual Report: 06/10/2015

Report Information

Annual Meeting Dates: 04/09/2015 - 04/11/2015
Period the Report Covers: 03/01/2014 - 04/01/2015

Participants

Heather Kelly (youngkelly@utk.edu)U. Tenn;Nathan Kleczewski (nkleczew@udel.edu)U. Delaware; Steven Slack(oardc@osu.edu);Tom Allen(tallen@drec.msstate.edu) Mississippi State;Tannis Tzanetakis(itzaneta@uark.edu)U Ark;Anthony Adesemoye (tony.adesemoye@unl.edu)U. Nebraska; Dean Malvick(dmalvick@umn.edu)U Minn;Aredra Kachroo(apkach2@uky.edu)U Kentucky;Ahmad Fakhoury (amfakhou@siu.edu)S. Illinois U;John Rupe(jrupe@uark.edu)U Ark;Yuba Kandel(ykandel@iastate.edu) Iowa State; Ed Sikora (sikorej@auburn.edu)Auburn;Scott Isard(sai10@psu.edu)Penn State;Daren Mueller(dsmuelle@iastate.edu)Iowa State;Kiersten Wise(kaawise@purdue.edu)Purdue;Carl Bradley(carlbrad@illinois.edu)U Illinois;Laura Sweets(sweetsl@missouri.edu)Missouri;Gary Bergstrom(gcb3@cornell.edu)Cornell;Anne Dorrance(dorrance.1@osu.edu)The Ohio State U;Doug Jardine(jardine@ksu.edu)Kansas State;Saghai Maroof(smaroof@vt.edu)Virginia Tech;Eduardo Salve(edasil1@lsu.edu)Lousiana State; Damon Smith(damon.smith@wisc.edu)U Wisc;Jim Kurle(Kurle001@umn.edu) U Minn;Febina Mathew(febina.mathew@sdstate.edu) S. Dakota State;Connie Strunk(connie.strunk@sdstate.edu)S. Dakota State;Berlin Nelson Sr.(berlin.nelson@ndsu.edu)N. Dakota State; Sam Markell(samuelmarkell@ndsu.edu) N. Dakota StateMarty Draper (USDA); Sonny Anderson (USDA); Anne Marie Thro (USDA); Kellye Eversole (Political consultant); Kelly Whiting (USB); Ed Anderson.

Participants Attachment:

Attachment

Brief Summary of Minutes

The meeting of the NCERA 137 Soybean Diseases Committee was held in Washington D.C. at the Waterfront building from April 9-10, 2015. Dr. Heather Young Kelly welcomed those in attendance at 9:00am. Group introductions followed the welcome. Brief oral reports on the status of the soybean crop and prevalent diseases were given for each state with a member in attendance. Written reports were also provided and compiled into a PDF document. State reports can be found in the attached minutes document.

The following presentations were given at the meeting:
• Effective communication with congress-Kelleye Eversole
• United States Soybean Board funded iPiPe Update– Scott Isard
• NCERA Administrative Update-Steve Slack
• USDA-NIFA Administrative Update-Dr. Marty Draper
• USB Administrative Update-Dr. Kelley Whiting
• SCSRP Administrative Update-Ed Anderson
• Soybean Vein Necrosis Virus Update-Damon Smith
• Management of Foliar Diseases of Soybean-Dr. Ahmad Fakoury
• Updates to Fungicide Efficacy Tables-Dr. Kiersten Wise
• Phytobiomes initiative-Kelleye Eversole
• Cercospora leaf blight symptomology and impact on yield-Eduardo Chagas
• Fungicide resistance in C. sojina aand S. glycines: Updates on Screening Results-Dr. Carl Bradley
• Frogeye leaf spot fungicide resistance results from Mississippi-Dr. Tom Allen
• Fungicide resistance in Tennessee populations of C. sojina-Dr. Heather Kelly
• Bee Health – Preliminary results on fungicides detected from the Mid-South-Dr. Heather Kelly

Business Meeting:
Motion to approve the minutes from 2014:
Dr. Doug Jardine moved for approval. Dr. Anne Dorrance seconded it. The motion passed with unanimous vote.

Impact Updates:
The group discussed state reports and impact statements and the need to highlight our accomplishments individually and as a group. Daren Mueller suggested that we change our state reports to streamline the process of writing the state reports and submitting them online. It was suggested that state reports should be one page long and highlight major impacts. Anne Dorrance suggested that the major impacts of the group be defined at the meetings for reporting purposes. Gary Bergstrom mentioned that we also need to remember to include interactions/collaborations in our impacts and reports. The group decided that personnel, disease conditions, production numbers, publications, and important state discoveries should be included in each single page state report.

Secretary nominations:
The floor was open for nominations for secretary of the NCERA-137 committee. Dr. Gary Bergstrom made a motion to appoint Dr. Damon Smith as the incoming secretary. Dr. Doug Jardine seconded and closed the nominations. Dr. Smith was unanimously elected by the group.

Meeting Locations:
Dr. Sam Markell discussed the potential for the NCERA-137 group to meet with the APS Rust Symposium. The rust group was interested in sites at New Orleans and Orlando. After talking with the group, Dr. Markell suggested that the rust symposium may be able to meet with SSDW in Pensacola FL. IF this is the case, the NCERA-184 group could also attend, thereby allowing attendance to the NCERA-184, SSDW, Rust Symposium, and NCERA-137 meetings at the same venue. Most of the meetings share attendees, thereby reducing/limiting travel. Dr. Tom Allen mentioned that SSDW is held on March 9-10, 2016. It was proposed that March 7-11 would be ideal to hold the entire string of meetings. Another option was to have the meeting the first two weeks of February. Dr. Dorrance moved that we attempt to meet with the rust symposium in 2016. Doug Jardine seconded. There was unanimous support for the motion. Dr. Markell will contact APS and Dr. Kleczewski about organizing the meeting in the upcoming weeks.

Dr. Kelly moved to close the meeting and the entire group unanimously seconded it.

Minutes Attachment:

Attachment

Accomplishments

Objective 1: Foster collaborative research and information exchange on soybean diseases among scientists in the north central region including soybean breeders and entomologists that will lead to improved disease screening protocols, additional sources of disease resistance, and ultimately improved host resistance. Accomplishments: a) Members of NCERA 137 voted to hold the 2015 meeting in conjunction with the APS rust symposium. The 2015 meeting will likely not only be help with the rust symposium, but also the NCERA 184 wheat disease group and the Southern Soybean Workers group (SSDW). This will foster additional information and idea exchange, collaboration, and improve participation. b) Discussion at NCERA 137 has resulted in participation in new and existing projects by new members of the group. Projects include white mold fungicide efficacy, Soybean Vein Necrosis Virus, and Stem Canker epidemiology and management. Objective 2: Evaluate the impacts of changing production practices such as earlier planting dates, new sources or resistance, increased use of fungicides and fungicide seed treatments, and other new or improved crop production technologies on soybean diseases. Accomplishments: a) Members of NCERA 137 are working collaboratively to update produce guides for seed treatments and foliar fungicides in soybean. These guides can be used by growers and agriculture professionals to select the product that will best suppress a given root or foliar disease in their region. b) Members of the group have documented increased numbers of strobilurin resistance in the Frogeye leaf spot pathogen. In 2014, additional resistant isolates were identified in several new counties and states, such as Virginia and Mississippi. Objective 3: Develop research projects to study the ecology and epidemiology of soybean diseases important to the north central region. Accomplishments: a) NCERA 137 members are working collaboratively on multi state research projects focused on stem canker, soybean cyst nematode, Sclerotinia white mold, Soybean Vein Necrosis Virus, soybean rust, frogeye leaf spot, and and charcoal rot. b) A survey of P. sojae has been completed in a region of the Midwest, which has improved our understanding of this pathogen and its management. Interactions via NCERA-137 have allowed this survey to continue and expand. Objective 4. Improve knowledge transfer about soybean diseases and their management in the North Central Region to researchers, Extension faculty, producers, and the agribusiness community through the use of websites, podcasts, and other new technologies as they become available. Accomplishments: a) Members of NCERA 137 were involved in the production of over 78 web based extension outreach materials including blogs, videos, electronic materials, and factsheets. b) Members of NCERA 137 continue to provide new webcasts for the Focus on Soybean section of Plant Management Network. c) Members of NCERA 137 continue to develop a farmer friendly version of the soybean disease compendium. Objective 5. Continue to monitor any new or emerging pathogens in the north central region and develop appropriate responses to their emergence as they appear. Accomplishments: a) Members of NCERA-137 have collectively documented the increase in Frogeye leaf spot, Cercospora leaf blight, and Septoria brown spot, which impact management recommendations and therefore, soybean productivity. b) Members of NCERA-137 continue to work together to evaluate and develop pest information platforms for soybean rust, soybean vein necrosis virus, and strobilurin resistant frogeye leaf spot. c) It was determined that stem canker may be an emerging issue in parts of the north central region. Members on the group are working on projects to assess and evaluate this disease, its impacts, and management.

Publications

Refereed Publications: 1. Allen, T. W. and E. J. Sikora. 2014. A Continuing Saga: Soybean Rust in the Continental United States, 2004 to 2013. Outlooks on Pest Management 25 (2) 167-174. 2. Bao, Y., T. Vuong; C. Meinhardt; P. Tiffin; R. Denny; S. Chen; H. Nguyen; J. Orf; N. Young. 2014. Potential of association mapping and genomic selection to explore PI 88788 derived soybean cyst nematode resistance. Plant Genome:7(3). 3. Bestor, N. R.C., Robertson, A. E., and Mueller, D. S. 2014. Effect of foliar fungicides on late-season anthracnose stem blight on soybean. Plant Health Progress doi:10.1094/PHP-RS-14-0013 4. Byamukama, E.Z., S. K. Eggenberger, R. A. Coelho-Netto, A. E. Robertson, and F.W. Nutter, Jr. 2014. Geospatial and Temporal Analyses of Bean Pod Mottle Virus Epidemics in Soybeans at the Field, County, and Agricultural District Spatial Scales. Phytopathology 104: 365-378 5. Chanda, A. K., Ward, N. A., Robertson, C. L., Chen, Z.-Y., and Schneider, R. W. 2014. Latent infection by Cercospora kikuchii, causal agent of Cercospora leaf blight in soybean. Phytopathology 104:1118-1124. 6. Chitrampalam, P., and Nelson, B. D., Jr. 2014. Effect of Fusarium tricinctum on growth of soybean and a molecular-based method of identification. Plant Health Progress. doi:10.1094/PHP-RS-14-0014 7. Dias, A.P.S., Li, X., Yang, X.B. 2014. Modeling the effects of cloudy weather on regional epidemics of soybean rust. Plant Disease 98:811-816. 8. Ellis, M.L., Cruz, D.R.C., Leandro, L.L., and Munkvold, G.P. 2014. Genotypic and phenotypic characterization of fungi in the Fusarium oxysporum species complex from soybean roots. Phytopathology 104:1329-1339 9. Ellis, M.L., and Munkvold, G.P. 2014. Trichothecene genotype of Fusarium graminearum isolates from soybean (Glycine max) seedling and root diseases in the United States. Plant Dis. 98:1012. Jing, L. Naiv, S.S. Yang, X.B. 2014. Effects of colonization by different strains of C. minitans. Biocontrol Science and Technology. 25: 460-474. 10. Gauthier, N. W., Maruthachalam, K., Subbarao, K., Brown, M., Xiao, Y., Robertson, C. L., Giles, C. G., and Schneider, R. W. 2014. Mycoparasitism of Phakopsora pachyrhizi, the soybean rust pathogen, by Simplicillium lanosoniveum. Biological Control 76:87-94. 11. Gao QM, Kachroo A, Kachroo P. 2014 Chemical inducers of systemic immunity in plants. Journal of Experimental Botany 65:1849-1855. 12. Heitkamp, E., Lamppa, R., Lambracht, P., Harveson, R., Mathew, F., and Markell, S. 2014. First report of bacterial pustule on soybeans in North Dakota. Plant Health Progress 15:155-156 doi:10.1094/PHP-RS-14-0007. 13. Impullitti, A.E., and Malvick, D.K. 2014. Anatomical response and infection of soybean during latent and pathogenic infection by type A and B of Phialophora gregata. PLoS ONE 9(5): e98311. doi:10.1371/journal.pone.0098311 14. Jing, L., Xu, X., Jing, J., Li, L., and Navi, S.S. 2014. Determination of physiological races and evaluation of sunflower for resistance to Puccinia helianthi Schw. Journal of Phytopathology, doi: 10.1111/jph.12296. 15. Kandel, Y., Bradley, C.A., Wise, K.A., Chilvers, M., Tenuta, A., Davis, V.M., Esker, P.E., Smith, D.L., Licht, M.A., and Mueller, D.S. 2015. Effect of glyphosate application on sudden death syndrome of soybean under different field conditions. Plant Disease. 99:347-354. 16. Kladivko, E.J., Helmers, M.J., Abendroth, L.J. Herzmann, D., Lal, R., Castellano, M., Mueller, D.S., Sawyer, J.E., Anex, R.P., Arritt, R.W., Basso, B., Bonta, J.V., Bowling, L., Cruse, R.M., Fausey, N.R., Frankenberger, J., Gassman, P., Gassmann, A.J., Kling, C.L., , Kravchenko, A., Lauer, J.G., Miguez, F.E., Nafziger, E.D., Nkongolo, N., O’Neal, M., Owens, L.B., Owens, P., Scharf, P., Shipitalo, M.J., Strock, J.S., and Villamil, M.B. 2014. Standardized research protocols enable transdisciplinary research of climate variation impacts in corn production systems. J. Soil and Water Conservation doi:10.2489/jswc.69.6.180A (69:180A-185A). 17. Lee, S., Mian, R.M.A., Sneller, C.H., Wang, H., Dorrance, A.E., and McHale, L. 2014. Joint linkage QTL analysis for partial resistance to Phytophthora sojae using six nested inbred populations with heterogenous conditions. Theor. Applied Genet. 127:429-444. 18. Lin, J., Guo, J., Finer, J., Dorrance, A.E., Redinbaugh, M.G., and Qu, F. 2014. The bean pod mottle virus RNA2-encoded 58 kilodalton protein P58 is required for cis for RNA2 accumulation. J. of Virology. 88:3213-3222. 19. Matthiesen, R., Ahmad, A., Ellis, M. and Robertson, A.E. 2014. First report of Pythium schmitthenneri causing maize seedling blight in Iowa. Plant Dis. 98:994. 20. Mathew, F., M., Castelbury, L., A., Jordahl, J. G., Taylor, C., A., Meyer, S., M., Lamppa, R. S., Pasche, J., A., and Markell, S., G. 201X. Identification of Diaporthe longicolla on dry edible peas, dry edible beans and soybeans in North Dakota. Plant Health Progress (In Press: PHP-RV-14-0045). 21. McCarville, M.T., D.H. Soh, G.L. Tylka, and M.E. O¹Neal. 2014. Aboveground feeding by soybean aphid, Aphis glycines, affects soybean cyst nematode, Heterodera glycines, reproduction belowground. PLoS ONE 9(1): e86415. doi:10.1371/journal.pone.0086415. 22. Mengistu, A., Kelly, H. M., Bellaloui, N., Arelli, P. R., Reddy, K. N., and Wrather, A. J. 2014. Tillage, fungicide, and cultivar effects on frogeye leaf spot severity and yield in soybean. Plant Dis. 98:1476-1484. 23. Mollov, D., Chilvers, M.I., and Jacobs J.L. 2014 First report of aster yellows phytoplasma in soybean in Michigan. Plant Disease 98:1578.1 24. Pedrozo, R., and Little, C.R. 2014. First report of Fusarium thapsinum and its pathogenicity on soybean (Glycine max) in the United States. Plant Disease 98: 1745. 25. Price, P. P., III, Purvis, M. A., Robertson, C. L., Schneider, R. W., and Padgett, G. B. 2014. Cercospora Leaf Blight Pathogen Resistant to Fungicides. Louisiana Agriculture 57:28-29. 26. Selote D, Shine MB, Robin GP, Kachroo A. 2014 Soybean NDR1-like proteins bind pathogen effectors and regulate resistance signaling. New Phytologist 202:485-498 27. Sikora, E. J., Allen, T. W., Wise, K. A., Baniecki, J., Bergstrom, G., Bradley, C., Brown-Rytlewski, D., Chilvers, M., Coker, C., Damicone, J., DeWolf, E., Dorrance, A., Dufault, N., Esker, P., Faske, T., Giesler, L., Goldberg, N., Golod, J., Gomex, I.R.G., Grau, C., Grybauskus, A., Franc, G., Hammerschmidt, R., Hartman, G., Henn, A., Hershman, D., Hollier, C., Isakeit, T., Isard, S., Jacobson, B., Jardine, D., Kemerait, B., Koenning, S., Langham, M., Malvick, D., Markell, S., Marois, J., Monfort, S., Mueller, D., Mueller, J., Mulrooney, B., Newman, M., Osborne, L., Padgett, G.B., Ruden, B., Rupe, J., Schneider, R., Schwartz, H. Shaner, G., Singh, S., Stromberg, E., Sweets, L., Tenuta, A., Trippett, C., Vaiciunas, S., Yang, X.B., H. Young-Kelly, Zidek, J. 2014. A coordinated effort to manage soybean rust in North America: a success story in soybean disease monitoring. Plant Disease 98:864-875. 28. Sikora, E. J. 2014. Kudzu: invasive weed supports the soybean rust pathogen through winter months in Southeastern United States. Outlooks on Pest Management 25 (2) 175-179. 29. Sikora, E. J., et al 2014. A coordinated effort to manage soybean rust in North America: a success story in soybean disease monitoring. Plant Dis. 30. Stewart, S., Abeysekara, N. and Robertson, A.E. 2014. Pathotype and genetic shifts in population of Phytophthora sojae under soybean cultivar rotation. Plant Dis. 98:614-621. 31. Tande, C., Hadi, B., Chowdhury, R., Subramanian, S., and Byamukama, E. 2014 First Report of Sudden Death Syndrome of Soybean Caused by Fusarium virguliforme in South Dakota. Plant Disease 98(7): 1012.1. 32. Tylka, G.L. and C.C. Marett. 2014. Distribution of the soybean cyst nematode (Heterodera glycines) in the United States and Canada: 1954 to 2014. Plant Health Progress 15:85-87, doi:10.1094/PHP-BR-14-0006. 33. Walker, D.R., Donna K. Harris, Zachary R. King, Zenglu Li, H. Roger Boerma, J. Blair Buckley, David B. Weaver, Edward J. Sikora, Emerson R. Shipe, John D. Mueller, James W. Buck, Raymond W. Schneider, James J. Marois, David L. Wright, and Randall L. Nelson. 2014. Evaluation of soybean germplasm accessions for resistance to Phakopsora pachyrhizi populations in the southeastern United States, 2009-2012. Crop Science 54: 1673-1689. doi:10.2135/cropsci2013.08.0513 34. Wang J, Shine MB, Gao QM, Navarre D, Jiang W, Liu C, Chen Q, Hu G, Kachroo A. 2014 Enhanced Disease Susceptibility1 Mediates Pathogen Resistance and Virulence Function of a Bacterial Effector in Soybean. Plant Physiology 165:1269-1284 35. Wang J., Jacobs, J.L., Byrne, J.M. Chilvers, M.I. 2015. Improved diagnosis and quantification of Fusarium virguliforme, causal agent of soybean sudden death syndrome. Phytopathology 36. Wen, Z., Tan, R., Yuan, J., Bales, C., Du, W., Zhang, S., Chilvers, M.I., Schmidt, C., Song, Q., Cregan, P., Kull, L., Wang, D. 2014. Genome-wide association mapping of quantitative resistance to sudden death syndrome in soybean. BMC Genomics 15:809 37. Westphal, W., Li, C., Xing, L., McKay, A., and Malvick, D. 2014.Contributions of Fusarium virguliforme and Heterodera glycines to the disease complex of sudden death syndrome of soybean. PLoS ONE 9(6): e99529. doi:10.1371/journal.pone.0099529. 38. Zeng, F., E. Arnao, G. Zhang, G. Olaya, J. Wullschleger, H. Sierotzki, R. Ming, B.H. Bluhm, J.P. Bond, A.M. Fakhoury, and C.A. Bradley. 2015. Characterization of quinone outside inhibitor fungicide resistance in Cercospora sojina and development of diagnostic tools for its identification. Plant Disease 99:544-550. 39. Zitnick-Anderson, K., and Nelson Jr., B. D. 2014. Identification and pathogenicity of Pythium on soybean in North Dakota. Plant Dis. doi.org/10.1094/PDIS-02-14-0161-RE. Refereed Technical Publications: 1. Byrne A.M. and Chilvers, M.I. 2014. Efficacy of foliar fungicides for white mold control in soybeans in Michigan, 2013. Plant Disease Management Reports 8:FC174. 2. Byrne A.M., Chilvers, M.I., Serven, B.L. and Dietz, T.S. 2014. Foliar fungicide efficacy on brown spot of soybeans in Michigan, 2013. Plant Disease Management Reports 8:FC175. 3. Byrne A.M., Chilvers, M.I., Dietz, T.S., Johnson, K. 2015. Efficacy of foliar fungicides for brown spot in Michigan soybeans, 2014. Plant Disease Management Reports 9:FC026 4. Byrne, A., Chilvers, M.I. 2015. Efficacy of foliar fungicides for white mold management in Michigan soybeans, 2014. Plant Disease Management Reports 9:FC055 5. Ciampitti, I.., Ruiz Diaz, D., Jardine, D., Peterson, D., Whitworth, R.J., and D.H. Rogers. 2015. Kansas Soybean Management 2015. K-State Research and Extension Publication MF3154 (Revised) 6. Emerson, M., Faske, T. R., and Hurd, K. 2014. Evaluation of fungicides on soybean for management of strobilurin-resistant frogeye leaf spot in Jackson Co., Arkansas, 2013. PDMR 8: FC279. 7. Emerson, M., Faske, T. R., and Hurd, K. 2014. Evaluation of fungicides for control of strobilurin-resistant frogeye leaf spot of soybean in Jackson, Co. Arkansas, 2013.PDMR 8: FC278. 8. Emerson, M., Faske, T. R., and Hurd, K. 2014. Evaluation of an antioxidant (Bio-Forage) for management of strobilurin-resistant frogeye leaf spot of soybean in Jackson Co., Arkansas, 2013.PDMR 8: FC277. 9. Jardine, D.J. 2014. Effects of seed protection chemicals on stand and yield of soybeans at Courtland, Kansas, 2013. Plant Disease Management Reports 8:ST008. 10. Kelly, H. M. 2014. Field evaluation of maturity group V soybean cultivars to frogeye leaf spot and fungicide in Tennessee, 2013. Plant Disease Management Report, Volume 8, Field Crops Section 11. Kelly, H. M. 2014. Field evaluation of late maturity group IV soybean cultivars to frogeye leaf spot and fungicide in Tennessee, 2013. Plant Disease Management Report, Volume 8, Field Crops Section 12. Kelly, H. M. 2014. Field evaluation of early maturity group IV soybean cultivars to frogeye leaf spot and fungicide in Tennessee, 2013. Plant Disease Management Report, Volume 8, Field Crops Section 13. Kelly, H. M. 2014. Efficacy of selected fungicides on frogeye leaf spot in Tennessee, 2013. Plant Disease Management Report, Volume 8, Field Crops Section 14. Kleczewski, N.M., 2015. Effect of foliar fungicides and application timings on full season soybean in Delaware, 2014. Plant Disease Management Reports. 9 Report FC030 15. Kleczewski, N.M., 2015. Effect of foliar fungicides and application timings on full season soybean in Newcastle County Delaware, 2014. Plant Disease Management Reports. 9 Report FC029 16. Price, P., G. B. Padgett, and M. A. Purvis. 2014. The efficacy of selected fungicides on frogeye leaf spot, 2013. Plant Dis. Manag. Rep. 8:FC222. 17. Price, P., G. B. Padgett, and M. A. Purvis. 2014. The effect of selected fungicides and application timings on frogeye leaf spot, 2013. Plant Dis. Manag. Rep. 8:FC223. Extension Publications: Blogs and Electronic media: 1. Byamukama, E. Corn & soybean disease update. Published 7/24/2014. Online. http://igrow.org/agronomy/corn/corn-soybean-diseases-update/ 2. Byamukama, E. Scout for root and stem rots in soybeans. Published 6/26/2014. Online. http://igrow.org/agronomy/soybeans/scout-for-root-and-stem-rots-in-soybeans/ 3. Byamukama, E. and Tande C. Did flooding drown soybean cyst nematode? Published 7/3/2014. Online http://igrow.org/agronomy/soybeans/did-flooding-drown-soybean-cyst-nematode/ 4. Byamukama, E. Corn & Soybeans: High moisture may increase risk of some crop diseases. Published 6/5/2014. Online http://igrow.org/agronomy/corn/corn-soybeans-high-moisture-may-increase-risk-of-some-crop-diseases/ 5. Byamukama, E. and Strunk, C. Is your SCN management intervention working? Published 10/20/2014. Online http://igrow.org/agronomy/soybeans/is-your-scn-management-intervention-working/ 6. Byamukama, E. and Strunk C. 2014. Identifying late-season soybean diseases: What is killing your soybean plants? http://igrow.org/agronomy/soybeans/identifying-late-season-soybean-diseases-what-is-killing-your-soybean-plant/ 7. Byamukama, E. and Strunk, C. Scout for the soybean cyst nematode. Published 8/7/2014. Online http://igrow.org/agronomy/soybeans/scout-for-the-soybean-cyst-nematode/ 8. Faske, T. R. Frogeye leaf spot and other diseases picking up in some soybean fields 7/18 9. Faske, T. R. Common foliar disease of soybean and corn that are not managed with a fungicide. 7/3 10. Faske, T. R. Strobilurin-resistant frogeye leaf spot: A mini review. 6/20 11. Kleczewski, N.M. Field Crops Disease Management Blog Articles (1250 views per month on average). 15 soybean disease related articles published in 2014. http://extension.udel.edu/fieldcropdisease/ 12. Kleczewski, N.M.Weekly Crop Update (Over 550 regional subscribers) 9 soybean disease related articles published in 2014. http://extension.udel.edu/weeklycropupdate/ 13. Mathew F. and Byamukama, E. Sudden Death Syndrome Increasing in South Dakota Soybean Fields. Published 10/15/2014. Online http://igrow.org/agronomy/soybeans/sudden-death-syndrome-increasing-in-south-dakota-soybean-fields/ 14. Price et al. Frogeye leafspot blog. Frogeye leaf spot of soybean alert. Louisianacrops.com 7/18/14 15. Price et al. Black root rot blog. Black root rot/mystery disease of soybean. Louisianacrops.com 8/6/2015 16. Price et al. 2014 Frogeye leaf spot prevalent in Louisiana soybean. Louisiana Crops Newsletter 4(7) pp 6-8. 17. Price et al 2014. Foliar disease management in soybean. Louisiana Crops Newsletter 4(4) pp1-4. 18. Price et al 2014. Black root rot strikes soybeans. This week in Louisiana Agriculture.Video segment 19. Smith, D.Soybean Disease Management (3/5). 2014. UW-Extension, Integrated Pest and Crop Management CCA video Series Charcoal Rot in the North Central Region: Overview of Research (1/6). 2014. North Central Soybean Research Program. https://www.youtube.com/watch?v=iGrH7XxAnlo&list=PLJrvi1hU0OlSYsWHNGhfqCzDRDGbCT9Eh 20. Smith, D. Charcoal Rot in the North Central Region: Life Cycle (2/6). 2014. North Central Soybean Research Program. https://www.youtube.com/watch?v=gPEmhUrRKAY&index=2&list=PLJrvi1hU0OlSYsWHNGhfqCzDRDGbCT9Eh 21. Smith, D. Charcoal Rot in the North Central Region: Management Options (3/6). 2014. North Central Soybean Research Program. https://www.youtube.com/watch?v=UzdZGCqZFJM&index=3&list=PLJrvi1hU0OlSYsWHNGhfqCzDRDGbCT9Eh 22. Smith, D. Charcoal Rot in the North Central Region: Growth Stages and Yield Loss (4/6). 2014. North Central Soybean Research Program. https://www.youtube.com/watch?v=lRyszy1Hjeg&index=4&list=PLJrvi1hU0OlSYsWHNGhfqCzDRDGbCT9Eh 23. Smith, D. Charcoal Rot in the North Central Region: Research Methods (6/6). 2014. North Central Soybean Research Program. https://www.youtube.com/watch?v=29qFgKuGPM&index=6&list=PLJrvi1hU0OlSYsWHNGhfqCzDRDGbCT9Eh 24. Smith,D. Brown Stem Rot in Soybean. 2014. UW-Extension – Cooperative Extension Service. University of Wisconsin. https://www.youtube.com/watch?v=-KWu9dPCDXY 25. Smith, D. Soybean Vein Necrosis Virus; North Central Soybean Research Program. 2014. North Central Soybean Research Program. https://www.youtube.com/watch?v=uMtyO8DIiEI Smith, D.L. 2014. Cercospora Leaf Blight and Purple Seed Stain of Soybean. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – July 23. 26. Smith, D.L. 2014. Wisconsin Soybean Phytophthora Root Rot Survey Update. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – July 30. 27. Smith, D.L. 2014. Alfalfa Mosaic Virus on Soybean in Wisconsin. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – August 1. 28. Smith, D.L. 2014. Wisconsin Corn and Soybean Disease Update – August 21, 2014. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – August 21. 29. Smith, D.L. 2014. Stem Canker Prevalent in Wisconsin Soybean Fields. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – September 2. https://www.youtube.com/playlist?list=PLMF9p1QYShgyZWu7FhQ2WKgEsX_1Nxye9 30. Strunk, C. and Byamukama, E. Phytophthora root & stem rot spotted in SD soybean fields. Published 8/14/2014. Online http://igrow.org/agronomy/soybeans/phytophthora-root-stem-rot-spotted-in-sd-soybean-fields/ Factsheets and Newsletters: 1. Bloomingdale, C., Bradley, C., Chilvers, M., Giesler, L., Groves, R., Mueller, D., Smith, D., Tenuta, A. and Wise, K. 2014. Soybean Disease Management: Soybean Vein Necrosis Virus.Kleczewski, N.M. Frogeye Leaf Spot of Soybean. University of Delaware Cooperative Extension Factsheet. 2014. Available at: http://extension.udel.edu/factsheet/frogeye-leaf-spot-on-soybean-2/ 2. Culman, S. W., Dorrance, A. E., Hammond, R. B., LaBarge, G. A., Lindsey, L. E., Loux, M. M., Michel, A. P., Ozkan, H. E., Paul, P. A., Sulc, R. M., Taylor, N. J., Thomison, P. R., and Watters, H. D. 2014. Corn, Soybean, Wheat, and Alfalfa Field Guide. The Ohio State University/CFAES/OSUE. Bulletin 827. 3. Davis, V., Jensen, B., Nice, G., Renz, M., and Smith, D.L. 2014. A3646 – Pest Management in Wisconsin Field Crops. UW Extension - Cooperative Extension Service. University of Wisconsin. 4. Groth, D.E. and Hollier, C.A. 2014. Managing sheath blight and aerial blight in the age of fungicide resistance. Louisiana Farm and Ranch 10:6:14. 5. Kelly, H. Know your FRAC code Oct 16, 2014 MidAmerica Farmer Grower 6. Kelly, H. Distinguishing Frogeye Leaf Spot From Chemical Injury in Soybean Southeast farm Press. July 25, 2014 7. Kelly, H. Identify Corn Diseases – Knowing threat to corn yields aids treatment selection May Southeast Farm Press. 2014 8. Kelly, H. Fight Yield Robbery – Efforts can prevent diseases from stealing crop yields Jan, 2014 Southeast Farm Press. 9. Kelly, H. Is it time to consider a corn fungicide application? The Furrow 10. Kelly, H. Is everything resistant? Pg. 15-16 – contributor, Sept-Oct. issue 2014 11. Kelly, H. Target spot a ‘seasonal’ disease in west Tennessee cotton? Sept. 24, 2014 12. Kelly, H. Disease-Control Strategies to Help Avoid Fungicide Resistance – contributor, May 1, 2014 13. Lewis Ivey, Melanie, Overstreet, Charles, Hoy, Jeffrey W., Hollier, Clayton A., Clark, Christopher A., Singh, Raghuwinder, Price, III, Paul P, Ferguson, Mary Helen, Padgett, Guy B., Groth, Donald E. 2014. Plant Disease Management Guide (online store item). Publication No. 1802. Louisiana State University Agricultural Center 14. Levy, Ronnie, Buckley, Blair, Padgett, Guy B., Hollier, Clayton A., Harrell, Dustin L., Stevens, Jr., J. Cheston, Viator, Sonny, Stephenson, Daniel O., Haggard, Beatrix J, Lofton, Josh, Price, III, Paul P, Bollich, Patrick K., Normand, Thomas K., Woodard, Caitlin. 2014. Soybean Variety Recommendations 2015. Publication No. 2269. Louisiana State University Agricultural Center. 15. Kleczewski, N.M. Sudden Death of Soybeans. University of Delaware Cooperative Extension Factsheet. 2014. Available at: http://extension.udel.edu/factsheet/sudden-death-of-soybeans-sds/ 16. Kleczewski, N.M. Sclerotinia Stem Blight (White Mold) of Soybeans. University of Delaware Cooperative Extension Factsheet. 2014. Available at: http://extension.udel.edu/factsheet/sclerotinia-stem-blight-white-mold-on-soybean/ 17. Marburger, D., Conley, S., Gaska, J., Macguidwin, A., and Smith, D. The Relationship Between the Causal Agent of SDS and SCN in Wisconsin. Soy Sentinel. Vol. 10. No. 3. 18. Mueller, D. and Wise, K. 2014. Corn Disease Loss Estimates From the United States and Ontario, Canada – 2013. Purdue Extension Publication BP-96-13-W Wise, K. 2014. Sudden death syndrome in soybean. Purdue Pest and Crop Newsletter. 19. Robertson, A., Chilvers, M., Bestor, N. 2014. Scouting for Pythium root rot in soybean. CSI 0024. Iowa State University Extension and Outreach 20. Smith, D., Chilvers, M., Dorrance, A., Hughes T., Mueller, D., Wise, K. 2014. Charcoal Rot Management in the North Central Region. University of Wisconsin-Extension. A4037. Smith, D.L. and Proost, R. 2014. Fact Sheet: What’s on your seed? UW Extension - Cooperative Extension Service. University of Wisconsin. 21. Smith, D.L. 2014. White mold management in 2013: Was it product or timing? Proc. Of the 2014 Wisconsin Crop Management Conference. Vol. 53. Pgs. 145-148. Smith, D.L., Chapman, S., and Jensen, B. 2014. Wisconsin Field Crops Pathology Fungicide Tests Summary, 2014. http://fyi.uwex.edu/fieldcroppathology/files/2014/12/2014-Fungicide-Test-Summary.pdf 22. Smith, D.L. 2014. Hot Off the Press! New Pythium Root Rot in Soybean Scouting Card Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – February 12. 23. Smith, D.L. 2014. Soybean Disease Considerations for Planting into Cool, Wet Soils. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – May 14. 24. Smith, D.L. 2014. Wisconsin Soybean Disease Update – June 19, 2014. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – June 19. 25. Smith, D.L., Wise, K., Chilvers, M., Bradley, C., and Mueller, D. 2014. Managing White Mold in Soybean. Wisconsin Field Crops Pathology Blog/Wisconsin Crop Manager – July 1. 26. Wise, K., Smith, D., Chilvers, M., Bradley, C., Mueller, D. 2014. Managing white mold in soybean. Purdue Pest and Crop Newsletter. 27. Wise, K. 2014. Soybean Vein Necrosis Virus in Indiana. Purdue Pest and Crop Newsletter. 28. Zitnick-Anderson, K., Markell, S., and Nelson Jr., B. 2014. Pythium damping-off of soybean. North Dakota Cooperative Extension Service Publication PP-1737 (In Press). Book Chapters: 1. Savary, S., Ficke,A. and Hollier, C. A. 2014. Impacts of global change on crop production and food security. In: Bill Freedman (ed.), Global Environmental Change, DOI 10.1007/978-94-007-5784-4_8, Springer Science+Business Media Dordrecht.

Publications Attachment:

Attachment

Impact Statements

Soybeans are the number one crop in terms of harvested acres in several North Central states. In 2014, record highs in soybean yield were achieved in several states and the overall national average yield, 47.8 bu/A was the highest of the last five years (NASS). Diseases must be managed to protect and improve yields. Work by the NCERA-137 group has identified several new and emerging threats to soybean production in the North Central Region. Our recent efforts have resulted in improved management of several threats such as soybean rust, soybean cyst nematode, and Sudden death syndrome.
Continued extension and outreach is essential to the successful management of diseases. In 2014, members of NCERA-137 produced over 78 impactful extension publications in a range of electronic and printed media outlets. An example publication is the soybean fungicide efficacy table, which was shared with over 98,000 clientele in 18 states in 2014. This, and other publications like it, provides unbiased, science based materials to growers and the agricultural community.

Date of Annual Report: 05/26/2016

Report Information

Annual Meeting Dates: 03/10/2016 - 03/11/2016
Period the Report Covers: 04/01/2015 - 03/01/2016

Participants

Brief Summary of Minutes

Please see attached file for NCERA137's annual report.

Minutes Attachment:

2016 NCERA 137 Soybean Diseases Final Report.pdf

Accomplishments

Publications

Impact Statements

Date of Annual Report: 06/15/2017

Report Information

Annual Meeting Dates: 03/07/2017 - 03/08/2017
Period the Report Covers: 03/01/2016 - 03/01/2017

Participants

Brief Summary of Minutes

Please see attached for NCERA137's annual report and meeting minutes.

Minutes Attachment:

NCERA137 Annual Report 2016_2017.pdf

Accomplishments

Publications

Impact Statements

Date of Annual Report: 04/10/2018

Report Information

Annual Meeting Dates: 03/06/2018 - 03/06/2018
Period the Report Covers: 03/08/2017 - 03/07/2018

Participants

Participants Attachment:

NCERA137 Attendee list 2018.pdf

Brief Summary of Minutes

Minutes Attachment:

2018 NCERA 137 Minutes.pdf

Accomplishments

2018 Annual Report: NCERA 137   Scientist(s) Ann MacGuidwin, Anne Dorrance, Binbin Lin, Brian Hudelson, Carl Bradly, Chris Taylor, Connie Strunk, Connie Tande, Damon Smith, Dean Malvick, Edward Sikora, Emmanuel Byamukama, Febina Mathew, Fen Qu, Heather Kelly, James Kurle, Marie Langham, Martin Chilvers, Rachel Guyer, Sam Markell, Senu Chen, Shawn Conley, Terry Niblack, Trey Price, Wesley Crowder, Travis Faske, and Tom Allen   State: Alabama, Arkansas, Iowa, Kansas, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, North Dakota, Ohio, South Dakota, Tennessee, Wisconsin   Date: April 5, 2018   Project Title: Soybean Disease Committee   Objective 1:   Foster collaborative research and information exchange on new and emerging soybean diseases among scientists in the North Central Region including soybean breeders and entomologists that will lead to improved disease screening protocols, additional sources of disease resistance genes and ultimately, improved host plant resistance   Alabama: Collaborating with plant pathologists and plant breeders in the mid-south region to develop soybeans lines resistant to Cercospora leaf blight.   We annually conduct one variety trial in Alabama as part of the program.   Arkansas: Participated in collaborative project to evaluate introductory and advanced germplasm for susceptibility to Cercospora leaf blight.  Interact with SCN coalition and provide diseased samples to LSU.             Kentucky:  My program collects and compiles information from soybean pathologists in the North Central Region about the impact that soybean diseases had on soybean yields in each of the North Central states annually.  This information is used to prioritize research and educate leaders in the soybean and agricultural industry about the role diseases play on soybean yields from year to year.  This project is funded by the United Soybean Board.  In addition, my program collaborates on a “foliar disease” project funded by the United Soybean Board.  As part of this project, my laboratory is collaborating with several others across the U.S. to document fungicide-resistant soybean pathogens, such as Cercospora sojina and Septoria glycines.    Michigan:  I regularly communicate with University and Industry colleagues across the North Central Region, in terms of reporting and hearing about emerging and remerging diseases. Examples of this include the prevalence of soybean sudden death syndrome, seedling disease, white mold and soybean vein necrosis virus.   Minnesota:  J. Kurle and D. Malvick are participating in a collaborative research project on Phytophthora pathogens affecting soybean across the North Central U.S., with the goal of improving durability of resistance in soybean. D. Malvick is conducting studies on identifying resistance to Rhizoctonia root rot.   Mississippi:  Trials were conducted in MS during 2017 to address the susceptibility of commercially available germplasm to charcoal rot as well as Cercospora blight.  Trials were conducted to look at both diseases during 2017. In 2017 we had collaborative working agreements with: Iowa State University, Louisiana State University, University of Arkansas, and University of Missouri   Ohio:  Lead for NCSRP project entitled: “Characterization of Phytophthora sojae and Phytophthora sansomeana populations in the North Central Region AND an Assessment of Management Strategies”- to collect and characterize the Phytophthora populations in the region for pathotype as well as putative new sources of resistance.   Lead for USB funded project entitled: “Identifying the perfect markers and developing germplasm for resistance to Phytophthora sojae, Pythium spp., and Fusarium graminearum in soybean”- identifying and characterizing sources of resistance, identifying markers but more importantly candidate genes that contribute to the expression of resistance.  Niblack and Dorrance (late 2017) very active in the SCN coalition.   South Dakota: Research was undertaken to characterize species of Diaporthe causing soybean disease in the United States. This project involves soybean researchers involve 21 U. S. states. Preliminary results indicate seven species of Diaporthe are pathogenic on soybean in the United States. Future research involves comparing inoculation methods to study the aggressiveness of Diaporthe species (D. caulivora, D. longicolla and D. aspalathi) and identifying candidate genes conferring resistance to the three pathogens.   Tennessee:  Discovered and collaborated with Mid-South scientists to document first report of taproot decline in Tennessee. Isolates were used in further analysis at LSU to study this new pathogen’s diversity.   Wisconsin:  The Smith laboratory maintains a small soybean breeding program with the goal to improve resistance to white mold in northern soybean varieties. We have made significant progress over recent years and will be releasing our first variety W16-9138 (Dane) as a public, non-GMO, food grade variety in 2019.               Objective 2:  Compare findings on the impacts of changing production practices such as earlier planting dates, new sources of host plant resistance, increased use of fungicide seed treatments and foliar fungicides, and other new or improved crop production technologies on soybean diseases that could be adopted for other production areas in the region.    Alabama:  We continue to conduct fungicide trials focused on soybean rust, frogeye leaf spot, Cercospora leaf blight and target spot in various locations in the state.  Products evaluated consists of both labeled and numbered compounds.  This type of research is important particularly due to the lack of sufficient information on fungicide efficacy for target spot as well as for the limited locations in the U.S. that can provide adequate data on soybean rust control.   Arkansas:  Field evaluation of 48 soybean varieties in a southern root-knot nematode infested field.  Each year conduct form 5 to 10 foliar fungicide trials to control frogeye leaf spot in the mid-South.  Also evaluate several new and commercially available seed-applied nematicides to manage southern root-knot nematode in Arkansas.   Kentucky:  Fungicide research trials are a major part of my research program.  In 2017, my program conducted fungicide research trials on soybean across 9 locations in Kentucky.  The data generated from these trials are used to help make better recommendations and to improve the annual soybean fungicide efficacy chart that is developed by NCERA 137 members every year.    Michigan:  A total of 55 field trials were conducted in Michigan to assess seed treatments and foliar products for their efficacy in the management of various diseases, including seedling disease and root rot, soybean sudden death syndrome, white mold and Septoria brown spot.    Minnesota:    D. Malvick contributed to studies of SDS management with seed treatment fungicides and partial resistance. Results from studies conducted in Minnesota have been used in regional publications.   Mississippi: Continue to provide data on foliar fungicide applications.  Trials (n=20) were conducted in Stoneville, MS and three trials were conducted in Starkville, MS (east MS).  Four large plot foliar fungicide trials were also conducted during 2017.  In addition, we screen the entire official variety trial for sensitivity to the foliar diseases as well as stem canker to provide those data for soybean farmers in MS.  North Dakota:  Approximately two dozen field trials were run to provide growers better information on managing SCN, white mold, root rots and downy mildew.   Ohio:  Completed a 3-year study examined the interaction of host resistance with and without fungicides or herbicides for management of Sclerotinia stem rot.  Overall, under the disease pressure in these fields, host resistance was effective at limiting disease for cultivars with high resistance levels.  For those with moderate or low, the fungicide Endura and the herbicide lactofen were effective at significantly reducing disease severity scores.  However when lactofen was applied at a location under water stress, a 9% yield loss was associated with that spray.   Evaluated seed treatments for the management of soil borne diseases at six locations in 2017. Evaluated foliar applications for the management of frogeye leaf spot and brown spot at 2 locations in 2017.   Tennessee:  Two different foliar fungicide trials were conducted at two to three locations. One evaluated generic fungicide mixes (i.e. farmer’s interested in making their own combination fungicides) at reducing disease and protecting yield. Other trial evaluated combination products (i.e. pre-mixes) across three different varieties that varied in their disease resistance to frogeye leaf spot and other diseases. Results indicated variety and location need to be considered to better guide fungicide product choices.    Wisconsin:  The Smith laboratory is leading a multistate, multisite field experiment to understand the integrated management of white mold on soybean. Trials are being evaluated in numerous north central states to build improved management recommendations for the disease.      Objective 3:  Compare data from studies of the ecology and epidemiology of soybean diseases important in the North Central Region   Alabama:  Share data with researchers at the University of Wisconsin on the epidemiology of Soybean vein necrosis virus in Alabama to compare and contrast the situation in the southeast with that occurring in the north-central region.  This will expand in 2018 to include a broader survey that will focus on Tobacco streak virus.   Michigan:  A total of 6 manuscripts were authored and co-authored on the epidemiology and management of seedling disease, white mold and soybean sudden death syndrome.    Ohio: Identified that partial resistance components linked to infection efficiency are important in the soybean-Sclerotinia sclerotiorum pathosystem.  Resistance reactions could be differentiated based on the level of infection efficiency and lesion length on the main stem. Although inoculation with ascospores presents some limitations such as the time required for inoculum production as well as the time and space required for plant growth, it has the potential to be used complimentary to other methods for the characterization of resistance of soybean genotypes.   South Dakota:  Information on Phytophthora sojae pathotypes in South Dakota is being collected and will be shared with colleagues in the region.   Tennessee:  Passive wind vane spore traps were used in field studies (across three locations and three varieties) to trigger fungicide applications targeting frogeye leaf spot. This spore trap triggered timing was compared to non-treated checks and standard fungicide timing at growth stage R3 (beginning pod). Disease severity was effected by locations, variety, and fungicide timing. Similarly, location and fungicide influence yield. Two of the three locations spore trap triggered fungicide applications positively affected disease control and yield (one location a fungicide application was not applied because of low disease pressure and another location the spore trap triggered timing significantly protected yield compared to the non-treated check). This is one of the first studies in field crops to utilize spore traps to better time fungicide applications.   Wisconsin:  Compare data from studies of the ecology and epidemiology of soybean diseases important in the North Central Region.     Objective 4:  Improve knowledge transfer about soybean diseases and their management in the North Central Region to researchers, Extension faculty, producers and the agribusiness community through the use of web sites, podcasts, social media (Twitter and Facebook) and other new technologies as they are developed.   Arkansas:  Annually contribute to newsletters posted on Arkansas Row Crops Website.   Additionally, deliver timely disease awareness information and details of plant pathology guides on websites with twitter.   Kentucky: I am working closely with the “Take Action” group, which is expanding from herbicide resistance into fungicide resistance.  This campaign kicked off in 2017, and is using multiple outlets to create awareness of fungicide resistance.   Michigan:  Continued participation in the Crop Protection Network as a platform to disseminate extension information, and videos to the YouTube channel MSU Field Crops pathology, and dissemination of information through Twitter handle @MartinChilvers1, and Facebook page “Chilvers Lab”.   Minnesota:  D. Malvick has contributed to knowledge transfer about soybean diseases and their management via contributions to publications on the Crop Protection Network and via web sites.  <ol> <li>Malvick at the U of MN and Sam Markell at NDSU produced a printed soybean disease identification guide.</li> </ol>   Mississippi:  Active contributor to the Mississippi Crop Situation Blog (www.mississippi-crops.com) as well as Twitter (@baldpathologist).  At present, have 2,400 followers on Twitter.  On an annual basis provide approximately 10-25 blog posts on soybean disease identification and their management.   North Dakota:  In 2017/18, three methods of knowledge transfer to producers and agriculture professionals were initiated and/or expanded.  1) The SCN Coalition, a coalition of Private partners, Checkoff organizations and University partners, was launched in February 2018.  Multi-layer knowledge transfer is a cornerstone of the anticipated outputs, which have been designed to allow/encourage producers to change the way they manage SCN (a true change of practice).  International (US and Canada).  Succinctly, outputs include 1) an online resource center (website) with state/company specific embedded pages testimonial videos, training videos and materials, 2) a national launch at the 2018 Commodity Classic, and 3) additional launch events anticipated in September and November. 2) The development of a region specific (MN/ND) 23-card diagnostic series publication.  Publication is pocket size, nearly indestructible and focused solely on disease diagnostics for the far northern growing region.3) A significant diagnostic upgrade to the NDSU Pest Management App was funded in 2018.  This upgrade will incorporate diagnostic images of soybean diseases and efficacy tables into the premier pesticide App in the state of North Dakota.   Ohio:  Initiated development of new ohio soybean disease management blog/website:  <a href="https://u.osu.edu/osusoybeandisease/">https://u.osu.edu/osusoybeandisease/</a> - this will be ready by spring.  Facebook post:  <a href="https://www.facebook.com/OsuSoybeanPathology/">https://www.facebook.com/OsuSoybeanPathology/</a> The most important has been the C.O.R.N. newsletter:  <a href="https://agcrops.osu.edu/newsletter/corn-newsletter/2018-05">https://agcrops.osu.edu/newsletter/corn-newsletter/2018-05</a>   Tennessee:  Disease management strategies, fungicide resistance information, and the foliar fungicide efficacy table discussed at every production meeting, grain conference, field days, and consultants meeting that University of Tennessee was involved in (total attendance >3,000) and the county agent in-service training (total attendance 58). This information and hands on training in diagnosing diseases was also given at UT summer soybean scout schools (total attendance 70). Information and presentations given on disease management was promoted in blog articles (~2,400 page views) news.utcrops.com, on the UTcrops.com, and the mobile-friendly field guide on soybean diseases guide.utcrops.com (>10,000 page views) and searchable soybean cultivar database containing disease ratings and yield (search.utcrops.com).   Wisconsin:  Wisconsin researchers continue to deliver high-quality research-based information to farmers and practitioners in a variety of ways. Coolbean.info and the Wisconsin Field Crops Pathology website (<a href="https://fyi.uwex.edu/fieldcroppathology/">https://fyi.uwex.edu/fieldcroppathology/</a>) are the primary methods of delivery. However, Both Dr. Conley (@badgerbean) and Dr. Smith (@badgercropdoc) maintain active twitter accounts and push all new information in this platform.      Objective 5:  Continue to monitor and share information for any new or reemerging pathogens of soybean in the North Central Region and develop appropriate responses to their emergence as they occur.    Alabama:  Sharing observation, isolates and data with researchers at LSU and Mississippi State University on Xylaria spp,, cause of taproot decline, as we continue to learn about this new disease of soybeans in the U.S.   Arkansas:  Soybean rust was detected in 10 counties in Arkansas and observations were posted on the ipm PIPE website.  Taproot decline was detected in seven counties of which, five were “first repot” for the state.  Target spot was observed, but at lower disease severity.   Kentucky:  Soybean rust was detected in four counties in Kentucky in 2017 (Fulton, Logan, Simpson, and Trigg). These findings were posted onto the IPM PIPE and an article was written in the Kentucky Pest News to alert growers.  There was no recommendation to treat as soybean rust arrived too late to impact yield.   Michigan:  In 2017 updates on white mold risk were made through MSU channels including “News for Ag” news feed, and through Michigan Soybean Promotion Committee, and through social media.    Mississippi: Soybean rust was reported from MS during 2017 and occurred in all 82 counties.      North Dakota: In 2017/18, three pathogen detection and monitoring efforts were conducted. Destructively sampled stems from over 200 fields were collected in North Dakota soybean fields. 2) Approximately 700 SCN samples were received as part of the statewide SCN sampling effort. 3) HG type tests were conducted on select soybean fields in ND (primarily in SE ND).   Ohio:  Surveyed for the incidence of soybean rust – only had 3 samples for this in 2017, no pustules were found.  Surveyed for the presence of insensitivity towards strobilurin fungicides in Cercospora sojina and all 9 locations sampled were insensitive based on PCR for G143A marker.  This is compared to 6 of 8 locations in 2016 and 1 out of 10 locations in 2015. Diagnosed Diaporthe stem canker, for the third year in a row, on highly susceptible cultivars in Ohio.Diagnosed wide spread acreage of flooding injury, not Phytophthora, in areas in Ohio.    South Dakota:  One new pathogen – Soybean vein necrosis virus was reported for the first time in South Dakota in 2017. The virus was found in 4 counties at a very low level.   Tennessee:  In 2017 soybean rust (SBR) was detected in 8 counties and management practices were extended to growers via. News.utcrops.com blog site. SBR was detected the ealiest it has ever been reported in Giles County, Tennessee (August 23, 2017, previously Aug. 29, 2016).  Although, incidence and severity did not reach high levels until most soybeans were at R7 or later. Monitoring and testing of QoI fungicide resistant frogeye leaf spot was conducted and for the fourth year in a row no samples tested 100% sensitive (every sample had some level of QoI resistance). Other diseases noted in 2017 included stem canker, downy mildew, septoria brown spot, target spot, and Cercospora leaf blight.   Wisconsin: We are leading a new research project to investigate the interaction of Soybean vein necrosis virus (SVNV) and Tobacco streak virus (TSV) in soybean, and the impact that this interaction has on seed health. Our research lab has previously worked on describing seed transmission of SVNV and partnered with Iowa State University researchers to show evidence that SVNV and TSV co-occur naturally in soybeans.     Impact Statements:   Alabama:  We continue to monitor statewide for soybean rust (SBR) other diseases via the soybean sentinel plot system accompanied with biweekly monitoring of SBR-susceptible kudzu patches in Alabama.  When the disease is detected in a county or region, a disease alert will go out to regional extension agents and directly to growers to help them prepare for the disease.  SBR can be a significant problem in Alabama, especially in years such as 2017 when a mild winter was followed by a wet and relatively cool spring and summer growing season.  The disease was identified in 59 of the 67 counties in the state, and data from large-scale fungicide trials indicated double-cropped commercials fields may have suffered as much as a 10% yield loss from SBR if  a fungicide application was not applied in a timely manner.     Arkansas:  Southern root-knot nematode continues to be the main yield-limiting pest across the state and mid-South.  Data from field trials delivered to producers via newsletter has been used by nearly every seed company in the area to place seed with producers.  The economic impact on a single farm could contribute to an average of 20 bu/A across the farm or an additional $160 (est. beans at $8/bu) in profit.   Kansas:  Used DNA metabarcoding to identify and better understand the frequency distribution of Fusarium spp. in asymptomatic soybean seeds. A BLAST search showed that the genus Fusarium, including known pathogenic groups such as F. proliferatum and F. thapsinum, was observed in all seed analyzed, including the high-quality commercial control. Overall, F. proliferatum was the most abundantly amplified species followed by F. thapsinum, F. acuminatum, F. merismoides, F. solani, Fusarium sp., and F. semitectum. To the best of our knowledge, this is the first report regarding the soybean seed mycobiome. The effects of nitrogen (N), phosphorus (P), and potassium (K) fertilization on a corn/soybean cropping sequence were evaluated from 1983 to 2018, with corn planted in odd years. There was a negative relationship between the P rate applied during the corn years and the severity of sudden death syndrome (SDS). High-glucosinolate mustard (i.e., a "green manure") was used as a cover crop in a three-year (2015-2017) charcoal rot study and was found to reduce M. phaseolina numbers in the soil and in plants. <ol> <li> verticillioides (FVE) is an important Fusarium species that has been recovered from soybean seeds. The objective of the study was to evaluate the influence of seed inoculum potential (amount of inoculum present in seeds) of FVE on soybean seed quality, as measured by germination of artificially inoculated seeds. Results of the study suggests that F. verticillioides has the potential to reduce soybean seed quality, depending on the amount of inoculum present in seeds (inoculum potential), which affects pathogenicity and negatively influences soybean seed germination as well as the establishment of a uniform and healthy stand in the field.</li> </ol>   Kentucky:  A major focus of my program in 2017 was educating growers and the soybean industry about fungicide resistance and management of frogeye leaf spot.  As part of this, I work closely with the “Take Action on Fungicide Resistance Team” in developing educational material and content that is used to promote awareness of fungicide resistance and provide recommendations used to manage fungicide resistance.   Louisiana: 2017 was a productive year for Louisiana soybean producers.  With the exception of frequent rain events during late July and August, growing conditions were ideal.  Overall yields were above average, and quality was mostly acceptable in early-maturing fields and excellent in later-maturing fields.  Early during the season, seedling diseases were light with primary culprits of Rhizoctonia solani and Pythium spp.  Numerous complaints of herbicide injury also were fielded early on in the season.  Aerial blight was a problem statewide throughout the entire season.  In SWLA QoI resistance in R. solani continues to be a problem and appears to be becoming more widespread.  Reports of SDHI resistance during 2016 were determined to be inaccurate by BASF.  Cercospora leaf blight was a problem statewide and particularly heavy in CENLA and NELA.  Purple seed stain as high as 50% was also observed in NELA.  Results from two variety trial locations should provide clues to whether the two diseases are correlated.  Frogeye leaf spot (FLS) was ubiquitous, but not as severe as in previous years.  Resistant varieties and triazole fungicides remain effective on FLS.  Target spot developed late during the season and was significant in susceptible varieties.  Some treatments were applied to prevent target spot in isolated areas of NELA.  In two locations in NELA, official variety trials were rated for target spot, and susceptible varieties were up to 70% defoliated.  Taproot decline (TRD) was widespread and moderate in NELA.  Efforts continued to estimate yield losses due to TRD.  Additionally, many field, greenhouse, and laboratory projects continued to elucidate unknown aspects of TRD.  Southern rootknot nematode (RKN) infestations appear to be increasing in severity in CENLA and NELA.  Southern blight was often found in conjunction with RKN infestations.  Soybean rust was present very early throughout the state, and was a problem in later-maturing fields.  Many fungicide efficacy trials were successful in generating data for SBR.  Challenging harvest conditions for early-planted soybean resulted in some weathering and in there were reports of quality dockages at elevators.  Most later-planted soybean had better yield and quality. Throughout the 2017 growing season, we responded to approximately 500 individual phone calls and text message threads, many of which resulted in field visits, laboratory diagnostics, or collaborative opportunities.  We participated in many grower meetings and field days throughout the year to extend results of our research efforts to stakeholders.    Michigan:  Through our efforts we have significantly mitigated the impact of plant diseases in Michigan field crops and reduced unnecessary fungicide inputs. We have demonstrated that cultural practices and variety selection based on disease resistance is key to management of diseases, followed by judicious use of appropriate fungicides or biologicals. For example, we have demonstrated the dramatic effect of row spacing on Sclerotinia apothecia development and subsequent white mold disease development. Additionally, by identifying and characterizing causal organisms of disease we have worked with breeders to improve screening techniques. For example, we are in the process of completing a report on the finding of Fusarium brasiliense for the first time in the U.S. on both soybean and dry bean, this pathogen is reported to be one of the casual agents of soybean sudden syndrome in Brazil. It is important for us to know that this pathogen is present in the U.S., and we have already begun screening fungicide seed treatments for management.   Minnesota:  D. Malvick has conducted studies of SDS management with seed treatment fungicides and partial resistance. Multiple studies were conducted in two locations in Minnesota over several years, and the results from these studies have been used in extension education programs, agriculture conferences, and scientific publications. <ol> <li>Malvick has been conducting studies on white mold management in soybean over multiple years, and the results from this work has impacted management of white mold.</li> </ol>   North Dakota: Per objective 4.  SCN is widely considered the most economically important soybean disease in the United States.  The SCN Coalition is one of the largest extension programs on field crops in the United States.  The SCN coalition is made up of Private partners, Checkoff organizations and University partners, and was launched in February 2018.  Approximately 30 scientists are involved in the SCN Coalition, several co-lead the coalition and North Dakota State University is the lead institution. Multi-layer knowledge transfer is a cornerstone of the anticipated outputs, which have been designed to allow/encourage producers to change the way they manage SCN (a true change of practice).  International (US and Canada).  Succinctly, outputs include 1) an online resource center (website) with 2) state/company specific embedded pages, 3) testimonial videos, 4) training videos and 5) downloadable materials, 6) a national launch at the 2018 Commodity Classic, and 7) additional launch events anticipated in September and November.   Ohio:  For 2017, we were able to provide support to crop consultants, extension educators and farmers on the correct diagnosis of some major yield impacts:  flooding injury, Diaporthe stem canker, white mold, and Cercospora.  This will allow for better variety selection in those fields (crop rotation preferred).  We also provided data on evaluations of chemistries for seed treatments, Sclerotinia stem rot, and frogeye leaf spot to improve the “return-on-investment” of these products. For companies, our advancements in the identification of candidate genes that play a role in the expression of resistance to P. sojae, Pythium spp. and Fusarium graminearum. These will be very important in developing varieties with high levels of resistance.   South Dakota:  Outreach and extension activities were carried out to inform growers, crop consultants and agronomists on soybean diseases and their management (see below extension publications). Awareness and free SCN testing was offered for growers in South Dakota. A grant was secured from the South Dakota Soybean Research and Promotion Council to pay for the SCN testing.   Tennessee:  Agricultural Extension Agents in Tennessee received formal in-service training on pest and crop management issues.  Over 3,000 agricultural clients were directly trained in disease management strategies for field crops at various production meetings, including individuals trained at soybean scout schools and soybean field day. Over 10,000 direct client contacts via individual visits, telephone conversations and email. Indirect contacts resulting for news articles and other publications exceeded 450,000. Over 400 clients viewed test plots and demonstration of IPM control tactics, and results of many experiments were published on the internet for public access. Disease management articles at UTcrops news blog received approximately 2,400 visits Extension agents greatly multiplied disease management impacts through individual program contacts. Savings to row crops producers in Tennessee via reduced fungicide costs and yield loss in field crops due to their increased understand of disease management strategies are conservatively estimated at greater than $7,000,000 in 2017.   Wisconsin: Weather-based models for assessing the risk of Sclerotinia sclerotiorum apothecial presence in soybean fields were developed from multi-state trials. Separate models for irrigated and non-irrigate fields were generated. These models were used to advise fungicide application timing for white mold management. In validation trials of 66 locations, models accurately predicted end-of-season white mold severity nearly 80% of the time. Models are now being programmed into smartphone apps for widespread use across the U.S. soybean belt to improve fungicide application timing and improve farmer efficiency and profitability.

Publications

Publications: (since last report) Journal Articles:   Abdelsamad, N. A., Baumbach, J., Bhattacharyya, M. K., and Leandro, L. F. S. 2017. Soybean sudden death syndrome caused by Fusarium virguliforme is impaired by prolonged flooding and anaerobic conditions. Plant Disease 101(5):712-719.   Acharya, K., Tande, C. and Byamukama, E. 2017. Assessment of commercial soybean cultivars for resistance against prevalent Heterodera glycines populations of South Dakota. Plant Health Progress 18: 156-161   Ajayi-Oyetunde, O.O., C.J. Butts-Wilmsmeyer, and C.A. Bradley. 2017. Sensitivity of Rhizoctonia solani to succinate dehydrogenase inhibitor and demethylation inhibitor fungicides. Plant Disease101:487-495.   Ajayi-Oyetunde, O.O., C.J. Butts-Wilmsmeyer, and C.A. Bradley. 2017. Identification and characterization of Rhizoctonia species associated with soybean seedling disease. Plant Disease 101:520-533.   Albu, S., S. Sharma, B. Bluhm, P. Price, R. Schneider, and V. Doyle.  2017.  Draft genome sequence of Cercospora cf. sigesbeckiae, a causal agent of Cercospora leaf blight on soybean.  Genome Announce 5:e00708-17.  <a href="https://doi.org/10.1128/genomeA.00708-17">https://doi.org/10.1128/genomeA.00708-17</a>.   Allen, T., B. Bluhm, K. Conner, V. Doyle, T. Price, E. Sikora, R. Singh, T. Spurlock, M. Tomaso-Peterson and T. Wilkerson.  2017.  First Description of the Causal Agent of Taproot Decline of Soybean, an Emerging Disease in the Southern United States.  Plant Health Progress 18: 35-40.  <a href="http://doi.org/10.1094/PHP-01-17-0004-RS">http://doi.org/10.1094/PHP-01-17-0004-RS</a>   Allen, T.W., Bradley, C.A., Sisson, A.J., Byamukama, E., Chilvers, M.I., Coker, C.M., Collins, A.A., Damicone, J.P., Dorrance, A.E., Dufault, N.S., Esker, P.D., Faske, T.R., Giesler, L.J., Grybauskas, A.P., Hershman, D.E., Hollier, C.A., Isakeit, T., Jardine, D.J., Kemerait, R.C., Kleczewski, N.M., Koenning, S.R., Kurle, J.E., Malvick, D.K., Markell, S.G., Mehl, H.L., Mueller, D.S., Mueller, J.D., Mulrooney, R.P., Nelson, B.D., Newman, M.A., Osborne, L., Overstreet, C., Padgett, G.B., Phipps, P.M., Price, P.P., Sikora, E.J., Smith, D.L., Spurlock, T.N., Tande, C.A., Tenuta, A.U., Wise, K.A., Wrather, J.A., and Young-Kelly, H. 2017. Soybean yield loss estimates due to diseases in the United States and Ontario, Canada from 2010 to 2014. Plant Health Progress. 18:19-27.   Anderson, N.R., Irizarry, M.D., Bloomingdale, C.A., Smith, D.L., Bradley, C.A., Deland, D.P., Kleczewski, N.M., Sikora, E.J., Wise, K.A., and Mueller, D.S. 2017. Effects of Soybean vein necrosis virus on yield and seed quality of soybean. Canadian Journal Plant Pathology. 39:334-341   Baidoo, R., Yan, G., Nelson, B., Skantar, A. M., & Chen, S. (2017). Use of chemical flocculation and nested PCR for Heterodera glycines detection in DNA extracts from field soils with low population densities. Plant Disease, 101:1153-1161.   Baturo-Ciesniewska, A., Groves, C.L., Albrecht, K.A., Grau, C.R., Willis, D.K., and Smith, D.L. 2017. Molecular identification of Sclerotinia trifoliorum and Sclerotinia sclerotiorum isolates from the United States and Poland. Plant Disease 101:192-199.   Bissonnette, K. M., C. C. Marett, M. P. Mullaney, G. D. Gebhart, P. Kyveryga, T. A. Mueller, and G. L. Tylka. 2018. Effects of Clariva Complete Beans seed treatment on Heterodera glycines reproduction and soybean yield in Iowa. Plant Health Progress. 19:1-8 doi.org/10.1094/PHP-08-17-0043-RS   Bloomingdale, C., Irrizarry, M.D., Groves, R.L., Mueller, D.S., and Smith, D.L. 2017. Seasonal population dynamics of thrips (Thysanoptera) in Wisconsin and Iowa soybean fields. Journal of Economic Entomology.doi:10.1093/jee/tow242.   Cheng, P., Gedling, C.R., Patil, G., Vuong, T.D., Shannon, J.G., Dorrance, A.E., and Nguyen,   H. 2017. Genetic mapping and haplotype analysis of a locus for quantitative resistance to Fusarium graminearum in soybean accession PI 567516C. Theor Appl Genet. 130:999-1010   Christopher N. Boyer, S. Aaron Smith, Xavier L. Harmon, Dayton M. Lambert, Jamie Jordan, Melvin Newman, Heather Y. Kelly. 2017. Value of Damage Control with Foliar Fungicide in Soybean Production in Tennessee. Agronomy Journal 109:4 DOI: 10.2134/agronj2016.12.0714   Coser, R.V., Chowda R., Zhang, J., Mueller, D.S., Mengistu, A., Wise, K.A., Allen T.W., Singh A., and Singh A.K. 2017. Genetic architecture of charcoal rot (Macrophomina phaseolina) resistance in soybean revealed using a diverse panel. Frontiers in Plant Science. Published: 21 September 2017. doi: 10.3389/fpls.2017.01626   Da Silva, M.P., Tylka, G.L., and Munkvold, G.P. 2017. Seed treatment effects on maize seedlings coinfected withRhizoctonia solani and Pratylenchus penetrans. Plant Disease 101:957-963.    Fall, M.L., Boyse, J.F., Wang, D., Wilbur, J.F., Smith, D.L., Chilvers, M.I. Submitted Dec 23, 2016, Accepted Dec 3, 2017. Case study of an epidemiological approach dissecting historical soybean Sclerotinia stem rot observations and identifying environmental predictors of epidemics and yield loss. Phytopathology <a href="https://doi.org/10.1094/PHYTO-12-16-0446-R">https://doi.org/10.1094/PHYTO-12-16-0446-R</a>   Freed, G.M., Floyd, C.M., and Malvick, D.K. 2017. Effects of pathogen population levels and crop-derived nutrients on development of soybean sudden death syndrome and growth of Fusarium virguliforme. Plant Disease 101:434-441.   Gaspar, A.P., Mueller, D.S., Wise, K.A., Chilvers, M.I., Tenuta, A.U., and Conley, S.P. 2017. Response of broad spectrum and target specific seed treatments and seeding rate on soybean seed yield, profitability, and economic risk. Crop Science. 56:1-12.   Grabau, Z. J., Vetsch, J., and Chen, S. 2017. Effects of fertilizer, nematicide, and tillage on plant–parasitic nematodes and yield in corn and soybean. 109: Agron. J. 1651-1662.   Han, G., Kandel, Y., Leandro, L., Helmers, M., Schott, L., and Mueller, D. 2017. Influence of drainage on soybean seedling health. J. Soil and Water Conservation. 72:266-271 doi:10.2489/jswc.72.3.266.    Hu, W., Samac, D.A., Liu, X., and Chen, S.  2017. Microbial communities in the cysts of soybean cyst nematode affected by tillage and biocide in a suppressive soil.   Appl. Soil Ecology. 119: 396-406.   Huzar-Novakowiski, J., Paul, P. A., and Dorrance, A. E. 2017. Host resistance and chemical       control for management of Sclerotinia stem rot of soybean in Ohio. Phytopathology 107: 937-949.   Kandel, Y. R., McCarville, M. T., Adee, E. A., Bond, J. P., Chilvers, M. I., Conley, S. P., Giesler, L. J., Kelly, H. M., Malvick, D. K., Mathew, F. M., Rupe, J. C., Sweets, L. E., Tenuta, A. U., Wise, K. A., and Mueller, D. S. 2017. Benefits of fluopyram addition to the base seed treatment for suppressing sudden death syndrome and increasing soybean yield: A meta-analysis. Plant Dis. (PDIS-10-17-1540-RE; Accepted 19-Nov-2017; In press).   Kandel, Y.R., Wise, K.A., Bradley, C.A., Chilvers, M.I., Byrne, A.M., Tenuta, A.U., Faghihi, J., Wiggs, S., and Mueller, D.S. 2017. Effect of soybean cyst nematode resistance source and seed treatment on population densities of Heterodera glycines, sudden death syndrome, and yield of soybean. Plant Disease. 101:2137-2143.   Kobayashi-Leonel, R., D. Mueller, C.J. Harbach, G.L. Tylka, and L. Leandro. 2017. Susceptibility of cover crop plants to Fusarium virguliforme, causal agent of soybean sudden death syndrome, and Heterodera glycines, the soybean cyst nematode. Journal of Soil and Water Conservation 72:575-583. doi:10.2489/jswc.72.6.575   Lee, S., Jun, T.H., McHale, L.K., Michel, A.P., Dorrance, A.E., Song, Q.J., and Mian, M.A.R. 2017. Registration of Wyandot x PI 567301B soybean recombinant inbred line population. J. of Plant Registrations 11:324-327   Luckew, A.S., Swaminathan, S., Leandro, L.F., Orf, J.H., and S.R. Cianzio.  2017. ‘MN1606SP’ by ‘Spencer’ filial soybean population reveals novel quantitative trait loci and interactions among loci conditioning SDS resistance. Theoretical and Applied Genetics 130 (10), 2139-2149   Marburger, D.A., Smith, D.L., and Conley, S.P. 2017. Impact of Fusarium graminearum on early-season soybean growth and seed yield under field conditions. Canadian Journal of Plant Pathology. DOI:10.1080/07060661.2017.1378727.   Mathew, F. M., Gulya, T. J., Jordahl, J. G., and Markell, S. G. 2018. First report of stem disease of soybean (Glycine max) caused by Diaporthe gulyae. Plant Disease 102:240.   McCaghey, M. and Willbur, J., Ranjan, A., Grau, C., Chapman, S., Diers, B., Groves, C., Kabbage, M., and Smith, D.L. 2017. Development and evaluation of Glycine max germplasm lines with quantitative resistance to Sclerotinia sclerotiorum. Frontiers in Plant Science. DOI:10.3389/fpls.2017.01495.    McCarville, M.C., Marett, C.C., Mullaney, M.P., Gebhart, G.D., and Tylka, G.L. 2017. Increase in soybean cyst nematode virulence and reproduction on resistant soybean varieties in Iowa from 2001 to 2015 and its effects on soybean yields. Plant Health Progress 18:146-155.    Morriss, S.C., Studham, M.E., Tylka, G.L., and MacIntosh, G.C. 2017. Validation of a hairy roots system to study soybean-soybean aphid interactions. PLoS ONE 12(3): e0174914. doi.org/10.1371/journal.pone.0174914.   Mourtzinis, S., D. Marburger, J. Gaska, T. Diallo, J.G. Lauer, and S.P. Conley. 2017. Corn and Soybean Yield Response to Tillage, Rotation, and Nematicide Seed Treatment. Crop Sci. doi:10.2135/cropsci2016.09.0792   Mourtzinis, S., D. Marburger, J. Gaska, T. Diallo, J.G. Lauer, and S.P. Conley. 2017. Corn, Soybean, and Wheat Yield Response to Crop Rotation, Nitrogen Fertilization, and Foliar Fungicide Use. Crop Sci. doi:10.2135/cropsci2016.10.0876. Okello, P. N., and Mathew, F. M. 201X. Interaction between Fusarium and soybean cyst nematode on soybean (Glycine max L.). Plant Dis. (PDIS-10-17-1570-RE; Accepted 16-Dec-2017). Pedrozo, R., and Little, C.R. 2017. Fusarium verticillioides inoculum potential influences soybean seed quality. European Journal of Plant Pathology 148: 749-754.   Phillips, X.A., Singh, A.K., Kandel, Y.R., and Mueller, D.S. 2017. Effect of pod removal, foliar fungicides and cultivar on green stem disorder. Agronomy Journal. 109:1-9   Radmer, L., Anderson, G., Malvick, D.K., Rendahl, A., Mallik, A. and Kurle, J.E. 2017. Pythium and Phytopythium spp. isolated from Minnesota soybean fields, their relative aggressiveness to soybean and corn, and their sensitivity to seed treatment fungicides. Plant Disease 101:62-72.   Ranjan, A., Jayaraman, D., Grau, C., Hill, J., Whitham, S., Ané, J., Smith, D., Kabbage, M. 2017. The pathogenic development of Sclerotinia sclerotiorum in soybean requires specific host NADPH oxidases. Molecular Plant Pathology DOI:10.1111/mpp.12555.   Rattalino Edreira, J.I., Mourtzinis, S., Conley, S.P., Roth, A.C., Ciampitti, I.A., Licht, M.A., Kyveryga, P.M., Kandel, H., Lindsey, L.E., Mueller, D.S., Naeve, S.L., Nafziger, E., Specht, J.E., Stanley, J., Staton, M.J., and Grassini, P. 2017. Assessing causes of yield gaps in agricultural areas with diversity in climate and soils. Agricultural and Forest Meteorology. 247:170-180.   Rojas, J.A., Jacobs, J., Napieralski, S., Karaj, B., Bradley, C.A., Chase, T., Esker, P.D., Gielser, L., Jardine, D., Malvick, D., Markell, S., Nelson, B., Robertson, A.E., Rupe, J., Smith, D., Sweets, L., Tenuta, A., Wise, K. and Chilvers, M. 2017. Survey of oomycete species associated with soybean seedlings in the U.S. – Part I: Identification and pathogenicity characterization. Phytopathology 107: 280-292.   Rojas, J.A., Jacons, J., Napieralski, S., Karaj, B., Bradley, C.A., Chase, T., Esker, P.D., Gielser, L., Jardine, D., Malvick, D., Markell, S., Nelson, B., Robertson, A.E., Rupe, J., Smith, D., Sweets, L., Tenuta, A., Wise, K., and Chilvers, M. 2017. Survey of oomycete species associated with soybean seedlings in the U.S. – Part II: Diversity and ecology. Phytopathology 107: 293-304   Rojas, J.A., Miles, T., Coffey, M., Martin, F.N., Chilvers, M.I. 2017. Development and application of qPCR and RPA genus and species-specific detection of Phytophthora sojae and Phytophthora sansomeana root rot pathogens. Plant Disease 101:1171-1181 Rojas, R.A., Jacobs, J., Napieralski, Karaj, B., Bradley, C., Chase, Esker, P., Giesler, L., Jardine, D., Malvick, D., Markell, S., Nelson, B., Robertson, A., Rupe, J., Smith, D., Sweets, L.,Tenuta, A., Wise, K., and Chilvers, M. 2017. Oomycete species associated with soybean seedlings in North America – Part II: Diversity and ecology in relation to environmental and edaphic factors. Phytopathology 107:293-304   Rojas, R.A., Jacobs, J., Napieralski, Karaj, B., Bradley, C., Chase, Esker, P., Giesler, L., Jardine, D., Malvick, D., Markell, S., Nelson, B., Robertson, A., Rupe, J., Smith, D., Sweets, L., Tenuta, A., Wise, K., and Chilvers, M. 2017. Oomycete species associated with soybean seedlings in the U.S. – Part I: Identification and pathogenicity characterization. Phytopathology 107:280-292.   Romero Luna, M.P., Mueller, D.S., Mengistu, A., Singh, A.K., Hartman, G.L., and Wise, K.A. 2017. Advancing our understanding of charcoal rot in soybeans. Journal Integrated Pest Management. 2017; 8 (1): 1-8. doi: 10.1093/jipm/pmw020.   Sahoo, D.K., Abeysekara, N.S., Cianzio, S., Robertson, A.E., and Bhattacharrya, M.K. 2017. A novel Phytophthora resistance gene mapped tightly to the Rps4/6 region in soybean. PLoS ONE 12(1): e0169950. doi:10.1371/journal.pone.0169950   Sandesh K. Shrestha, Kurt Lamour, Heather Young-Kelly. 2017. Genome sequences and SNP analyses of Corynespora cassiicola from cotton and soybean in the southeastern United States reveal limited diversity. PLOS ONE 12:9 DOI: 10.1371/journal.pone.0184908   Sandesh Kumar Shrestha, Alicia Cochran, Alemu Mengistu, Kurt Lamour, Arturo Castro-Rocha, Heather Young-Kelly. 2017. Genetic diversity, QoI fungicide resistance, and mating type distribution of Cercospora sojina—Implications for the disease dynamics of frogeye leaf spot on soybean. PLOS ONE 12:5 DOI: 10.1371/journal.pone.0177220   Sikora, E. J. and M. A. Delaney.  2016.  Identifying Soybean Rust-resistant and Susceptible Populations of Kudzu to Increase Disease Monitoring Efficiency in Alabama.  17:239-244. http:// doi.org/10.1094/PHP-RS-16-0039.   Sikora, E., J. Murphy and K. Conner.   2017.  Monitoring Bean pod mottle virus and Soybean mosaic virus incidence at different soybean growth stages in Alabama.  Plant Health Progress 18: 166.  <a href="http://doi.org/10.1094/PHP-03-17-0012-BR">http://doi.org/10.1094/PHP-03-17-0012-BR</a>   Srour, A. Y., Gibson, D. J., Leandro, L. F. S., Malvick, D. K., Bond, J. P., and Fakhoury, A. M. 2017. Unraveling microbial and edaphic factors affecting the development of sudden death syndrome in soybean. Phytobiomes 1(2):91-101. DOI: 10.1094/PBIOMES-02-17-0009-R.   Tylka, G.L., and Marett, C.C. 2017. Known distribution of the soybean cyst nematode, Heterodera glycines, in the United States and Canada - 1954 to 2017. Plant Health Progress 18:167-168.<a href="http://dx.doi.org/10.1094/PHP-05-17-0031-BR">http://dx.doi.org/10.1094/PHP-05-17-0031-BR</a>   Vosberg, S.K., Marburger, D.A., Smith, D.L., and Conley, S.P. 2017. Planting date and fluopyram seed treatment effect on soybean sudden death syndrome and seed yield. Agronomy Journal. DOI:10.2134/agronj2017.04.0232.   Wang, J., Bradley, C.A., Stenzel, O., Pedersen, D.K., Reuter-Carlson, U., Chilvers, M.I. 2017. Baseline sensitivity of Fusarium virguliforme to fluopyram fungicide. Plant Disease 101:576-582.   Willbur, J., McCaghey, M., Chapman, S., Kabbage, M., and, Smith, D.L. 2017. Improving white mold management of soybean in Wisconsin. Proceedings of the 2017 Wisconsin Agribusiness Classic. Vol 1:13-17.   Willbur, J. F., Ding, S., Marks, M. E., Lucas, H., Grau, C. R., Groves, C. L., Kabbage, M., and Smith, D. L. 2017. Comprehensive Sclerotinia stem rot screening of soybean germplasm requires multiple isolates of Sclerotinia sclerotiorum. Plant Disease 101:344-353.   Williams, M., and C.A. Bradley. 2017. Fludioxonil + mefenoxam seed treatment improves Edamame seedling emergence. HortTechnology 27:846-851.   Yan, G. P.,  Plaisance, A.,  I. Chowdhury, R. Baidoo, A. Upadhaya, J. Pasche, S.Markell, B. Nelson, and S. Chen.. 2017. First Report of the soybean cyst nematode Heterodera glycines infecting dry bean (Phaseolus vulgaris L.) in a commercial field in Minnesota.  Plant Disease  101: 391.   Yuba Raj Kandel, Michael McCarville, Eric A Adee, Jason P Bond, Martin I Chilvers, Shawn P. Conley, Loren J. Giesler, Heather M Kelly, Dean Malvick, Febina Merlin Mathew, John C. Rupe, Laura Sweets, Albert Tenuta, Kiersten Alane Wise, Daren S. Mueller. 2017. Benefits and profitability of fluopyram-amended seed treatments for suppressing sudden death syndrome and protecting soybean yield: A meta-analysis. Plant Disease 21:11 DOI: 10.1094/PDIS-10-17-1540-RE   Zeng, F., X. Lian, G. Zhang, X. Yu, C.A. Bradley, and R. Ming. 2017. A comparative genome analysis of Cercospora sojina with other members of the pathogen genus Mycosphaerella on different plant hosts. Genomics Data 13:54-63.   Zeng, F., C. Wang, G. Zhang, J. Wei, C.A. Bradley, and R. Ming. 2017. Draft genome sequence of Cercospora sojina S9, a fungus causing frogeye leaf spot (FLS) disease of soybean. Genomics Data12:79-80.   Zhang, G., and C.A. Bradley. 2017. Comparison of quinone outside inhibitor fungicide-resistant and –sensitive isolates of Cercospora sojina. Crop Protection 94:59-63.     Book Chapters: Bajaj R. et al. 2017. Protocol for biocontrol of soybean cyst nematode with root endophytic fungi. In: Varma A., Sharma A. (eds) Modern Tools and Techniques to Understand Microbes. Springer   Bradley, C.A. and D.S. Mueller. 2017. Sclerotinia stem rot (white mold) of soybean in U.S.A. Pp. 131140. IN: D. de Souza Jaccoud-Filho, L. Henneberg, E.M.G. Grabicoski, eds. Mofo Branco Sclerotiniasclerotiorum. Todapalavra Editora LTDA., Ponta Grossa, Brazil.   Lopez-Nicora, H. D., and T. L. Niblack. 2018. Chapter 12, Interactions with Other Pathogens, pp. 271-304 in R. N. Perry, M. Moens, and J. T. Jones (eds), Cyst Nematodes. CABI (in press).   Niblack, T. L., and H. D. Lopez-Nicora. 2018. Chapter 18, Nematode Pathogens of Soybean, 39 pp. in H. Nguyen (ed.), Achieving Sustainable Cultivation of Soybean. Burleigh Dodds (in press).   Niblack, T. L. 2017.  Chapter 14, Nematodes Associated with Maize, pp. 300-315 in D. Watson (ed.), Achieving Sustainable Cultivation of Maize Volume 2: Cultivation Techniques, Pest and Disease Control. Burleigh Dodds Science Publishing, Cambridge, UK <a href="http://dx.doi.org/10.19103/AS.2016.0002.17">http://dx.doi.org/10.19103/AS.2016.0002.17</a>         Proceedings and Abstracts: Allen, T. W., Bradley, C. A., Damicone, J. P., Dufault, N. S., Faske, T. R., Hollier, C. A., Isakeit, T., Kemerait, R. C., Kleczewski, N. M., Kratochvil, R. J., Mehl, H. L., Mueller, J. D., Overstreet, C., Price, P. P., Sikora, E. J., Spurlock, T. N., Thiessen, L., Wiebold, W. J., and Young, H. 2017. Southern United States soybean disease loss estimates for 2016. Proceedings of the Southern Soybean Disease Workers, Pensacola Beach, FL, March 8-9, 2017.   Allen, T. W., Faske, T. R., Hollier, C. A., Mueller, D., Price, P., Spurlock, T. N., and Kelly, H. 2017. Frogeye leaf spot management: The UUOT part deux. Proceedings of the Southern Soybean Disease Workers, Pensacola Beach, FL, March 8-9, 2017. Allen, T. W., Bluhm, B. H., Conner, K., Doyle, V., Price, T., Sikora, E. J., Singh, R., Spurlock, T. N., and Wilkerson, T. 2017. Taproot decline: First report of a previously unknown disease of soybean. Phytopathology 107:S3.8.   Allen, T. W., Price, T., Purvis, M. A., Pruitt, H., Tomaso-Peterson, M., and Wilkerson, T. 2017. Potential varietal resistance to taproot decline in soybean. Phytopathology 107:S3.9.   Binbin Lin, Alemu Mengistu, Hao Yu and Heather Kelly. Coupling spore traps and quantitative PCR assays for detection of Cercospora sojina, the causal agent of soybean frogeye leaf spot. Southern Soybean Disease Workers Meeting (SSDW) Meeting, Pensacola, FL March 2017.   Boney, B., Spurlock, T. N., Rupe, J. C., Allen, T. W., Francis, P., Stark, R., Overstree, C., and Tolbert, A. C. 2017. Management of plant-parasitic nematodes in soybean using site-specific methods. Phytopathology 107:S3.2. Brochard, N., Tomaso-Peterson, M., Allen, T. W., Bluhm, B. H., Dhillon, B., and Faske, T. R. 2017. Target spot and potential resistance to QoI fungicides in Mississippi soybean. Proceedings of the Southern Soybean Disease Workers, Pensacola Beach, FL, March 8-9, 2017.   Fall, M.L., Willbur, J.F., Smith, D.L., Byrne, A., and Chilvers, M. 2017. Temporal distribution pattern of Sclerotinia sclerotiorum apothecia is modulated by row spacing and weather variables in soybean. Phytopathology 107:S5.30.   Ghimire, K., Kontz, B., Smith, D.L., Bradley, C.A., Mueller, D.S., Wise, K.A., Braun, N., and Mathew, F.M. 2017. Comparing inoculation methods to study the aggressiveness of Diaporthe aspalathi causing southern stem canker of soybean. Phytopathology 107:S5.116.   Groover, W. D. Dodge, K. Lawrence, E. Sikora and D. Delaney.  2017.  The effect of abamectin on maturity group V soybean varieties (Glycibe max) in root-knot (Meloidogyne incognita) nematode infested fields in Alabama.  Proceeding of the Southern Soybean Disease Workers Annual Meeting.  Pensacola Beach, FL.  3/8-9/17.  Page 15.   Kelly, H. M. Effect of commercial seed treatments on SDS and SCN in Tennessee soybean fields. Soybean Cyst Nematode Conference, Volume:107. Miami, FL January 2017. Malvick, D., and Floyd, C. 2017. Characterization of response to Rhizoctonia solani among soybean cultivars in field and greenhouse environments.   Proceedings from  the Annual Meeting of the North Central Division of the American Phytopathological Society in Champaign, IL. June 2017.    Mansour, W. J., Tomaso-Peterson, M., Henn, A., Bond, J. A., Irby, J. T., and Allen, T. W. 2017. Quantifying the impacts of fungicide phytotoxicity in Mississippi soybean. Phytopathology 107:S3.8.   Mansour, W. J., Tomaso-Peterson, M., Henn, A., Bond, J. A., Irby, J. T., and Allen, T. W. 2017. Plant growth characteristics and yield of soybean as a result of fungicide-associated phytotoxicity. Proceedings of the Southern Soybean Disease Workers, Pensacola Beach, FL, March 8-9, 2017.   McCaghey, M., Ranjan, A., Kurcezewski, J., Kabbage, M., and Smith, D.L. 2017. Controlling Sclerotinia stem rot using gene silencing. Phytopathology 107:S5.90.   Moellers, T.C., Singh, A., Zhang, J., Brungardt, J., Kabbage, M., Mueller, D.S., Grau, C.R., Ranjan, A., Smith, D.L., Chowda-Reddy, R.V., and Singh, A.K. 2017. Main and epistatic loci studies in soybean for Sclerotinia sclerotiorum resistance reveal multiple modes of resistance in multi-environments. Scientific Reports. 7:3554 doi:10.1038/s41598-017-03695-9   Price, P., T. W. Allen, H. Pruitt, M. A. Purvis, M. Tomaso-Peterson, and T. Wilkerson.  2017.  Effect of variety, seed treatment, and in-furrow fungicide on taproot decline of soybean.  Proc. Southern Soybean Dis. Workers.  March 8-9, 2017 – Pensacola, FL.  24.   Ranjan, A., Smith, D.L., and Kabbage, M. 2017. Resistance to Sclerotinia sclerotiorum in soybean deciphered by transcriptome and metabolome analysis. Phytopathology 107:S5.2.   Renfroe, H., Brochard, N., Tomaso-Peterson, M., and Allen, T. W. 2017. Evaluating thiophanate-methyl sensitivity as an alternative control option for QoI-resistant populations of Cercospora sojina in Mississippi. Proceedings of the Southern Soybean Disease Workers, Pensacola Beach, FL, March 8-9, 2017   Rogovska, N., Laird, D., Leandro, L., and D. Aller. 2017. Biochar effect on severity of soybean root disease caused by Fusarium virguliforme. Plant and Soil 413(1-2): 111-126. DOI: 10.1007/s11104-016-3086-8   Sikora, E., D. Delaney, M. Delaney and C. Brodbeck.  2017.  Monitoring and early detection of soybean rust in Alabama (USA).  VIII International Scientific Seminar of Plant Protection 2017, Havana, Cuba, April 10-14, 2017.   Willbur, J.F., Fall, M.L., Byrne, A., Chapman, S., Bradley, C.A., Chilvers, M., Kleczewski, N.M., Mueller, D.S., Conley, S., and Smith, D.L. 2017. Meta-analysis and yield loss analysis of multiple site-year fungicide evaluations for improved Sclerotinia stem rot management in soybean. Phytopathology 107:S5.37.   Wilkerson, T. H., Tomaso-Peterson, M., Golden, B. R., Lu, S., Johnson, A. B., and Allen, T. W. 2017. Assessing applications of secondary nutrients as a management strategy for charcoal rot of soybean. Phytopathology 107:S3.13.   Wilkerson, T. H., Tomaso-Peterson, M., Golden, B. R., Lu, S., Johnson, A. B., and Allen, T. W. 2017. New charcoal rot management strategies: Supplementing secondary nutrients. Proceedings of the Southern Soybean Disease Workers, Pensacola Beach, FL, March 8-9, 2017.     Extension Articles: Allen, T. W. 2017. 2017 soybean stem canker inoculated variety trial evaluations. Mississippi Crop Situation, November 24, 2017.   Allen, T. W. 2017. Soybean stem canker: 2017 visual observations from the Clarksdale OVT. Mississippi Crop Situation, November 19, 2017.   Irby, T., and Allen, T. W. 2017. 2017 soybean variety demonstration program summary. Mississippi Crop Situation, November 3, 2017.   Irby, T., Allen, T. W., Catchot, A., Gore, J., and Cook, D. 2017. Soybean harvest aids and other late season management considerations. Mississippi Crop Situation, August 19, 2017.   Allen, T. W., Catchot, A., Irby, T., Cook, D., and Gore, J. 2017. Protecting seed quality. Mississippi Crop Situation, August 19, 2017.   Allen, T. W., and Irby, T. 2017. Foliar soybean disease update: August 19, 2017. Mississippi Crop Situation, August 19, 2017.   Allen, T. W., and Irby, T. 2017.Soybean rust update: August 5, 2017. Mississippi Crop Situation, August 5, 2017.   Allen, T. W. 2017. Soybean target spot: Information regarding susceptible varieties observed during 2016. Mississippi Crop Situation, July 24, 2017.   Allen, T. W. 2017. Soybean disease update: July 22, 2017. Mississippi Crop Situation, July 22, 2017.   Allen, T. W. 2017. Soybean disease update: July 1, 2017. Mississippi Crop Situation, July 1, 2017.   Allen, T. W. 2017. Navigating fungicide active ingredients. Mississippi Crop Situation, June 23, 2017.   Allen, T. W. 2017. Soybean disease update: June 18, 2017. Mississippi Crop Situation, June 18, 2017.   Allen, T. W., and Irby, T. 2017. Considering the R3/R4 automatic fungicide application in soybean: time to apply two modes of action instead of one. Mississippi Crop Situation, June 3, 2017.   Allen, T. W. 2017. Managing target spot of soybean: 2016 fungicide trial efficacy results. Mississippi Crop Situation, April 1, 2017.   Allen, T. W. 2017. Target spot management: thoughts from 2016 observations. Mississippi Crop Situation, March 21, 2017.   Allen, T. W. 2017. 2016 soybean OVT foliar disease ratings: Maturity group IV. Mississippi Crop Situation, January 19, 2017.   Bissonnette, K.M. and G.L. Tylka. 2017. Seed treatments for soybean cyst nematode. Iowa State University Extension Publication CROP 3142, 1 p.             Bradley, C. 2017. Update on soybean rust. Kentucky Pest News. <a href="https://kentuckypestnews.wordpress.com/2017/09/12/update-on-soybean-rust/">https://kentuckypestnews.wordpress.com/2017/09/12/update-on-soybean-rust/</a>.   Bradley, C., Chilvers, M., Freije, A., Giesler, L., Mueller, D., Sikora, E., Sisson, A., Smith, D., Tenuta, A. and Wise, K. 2017. Soybean Disease Management: Frogeye leaf spot. Crop Protection Network. CPN 1017.   Bradley, C., and Wise, K. 2017. Soybean foliar disease considerations. Kentucky Pest News. <a href="https://kentuckypestnews.wordpress.com/2017/08/01/soybean-foliar-disease-considerations/">https://kentuckypestnews.wordpress.com/2017/08/01/soybean-foliar-disease-considerations/</a>   Broeske, M., Arriaga, F.J., Jensen, B.M., Laboski, C., Lauer, J.G., Luck, B.D., and Smith, D.L.  2017. Grain management considerations in low-margin years. University of Wisconsin-Extension, Cooperative Extension Publication, A4137.   Byamukama, E. and Strunk, C. 2017. Consider SCN sampling this spring. Online, iGrow Published May 2017.   Byamukama, E. Mathew, F. Strunk, C. and Tande, C. 2017. Scout for root rots in soybean.  Online, iGrow Published June 2017.   Byamukama, E. and Strunk, C. 2017. Brown spot starting to develop in soybeans. Online, iGrow Published June 2017   Byamukama, E., Strunk, C. and Tande, C. 2017. Current dry conditions may mean higher SCN numbers this summer. Online, iGrow Published July 2017.   Byamukama, E. and Strunk, C. 2017. White Mold Development: Is your soybean field at risk? Online, iGrow Published July 2017.   Byamukama, E. and Strunk, C. 2017. Bacterial blight on the increase in some soybean fields. Online, iGrow Published August 2017.   Byamukama, E. and Edwards, L. 2017. Seeing dead soybean plants in a circular pattern? Could be due to lightning. Online, iGrow Published August 2017.   Byamukama, E., Mathew, F. and Strunk, C. 2017. Stem canker developing in soybeans. Online, iGrow Published August 2017.   Byamukama, E., Strunk, C., and Varenhorst, A. 2017. Soybean field day planned for September 12. Online, iGrow Published August 2017.   Byamukama, E. and Strunk, C. 2017. White mold starting to develop. Online, iGrow Published September 2017.   Byamukama, E., Strunk, C., and Tande, C. 2017. Brown stem rot and frogeye leaf spot developing in soybeans. Online, iGrow Published September 2017.   Byamukama, E., Strunk, C., Tande, C. and Mathew, F. 2017. Sudden death syndrome of soybean confirmed in South Dakota. Online, iGrow Published September 2017.   Byamukama, E., Strunk, C., Tande, C., Langham, M. A. C. and Varenhorst, A. Alfalfa mosaic virus detected in soybeans. Online, iGrow Published September 2017.   Byamukama, E. Strunk, C. and Tande, C. 2017. Soybeans dropping leaves too early in patches? Could be charcoal rot. Online, iGrow Published September 2017.   Byamukama, E., Tande, C., Langham, M. A. C., Strunk, C. and Varenhorst, A. 2017. Soybean vein necrosis virus detected in South Dakota soybeans. Online, iGrow Published September 2017.   Dorrance, A. First report of frogeye leaf spot in Ohio – is it sensitive? C.O.R.N. Newsletter 2017-21.   Dorrance, A. Frogeye at R5 in Indeterminant soybean – not to worry. C.O.R.N. Newsletter 2017-27.   Dorrance, A. How to separate flooding injury from Phytophthora seedling and stem blight. C.O.R.N. Newsletter 2017-20.   Dorrance, A. Septoria brown spot and bacterial blight. C.O.R.N. Newsletter 2017-22.   Dorrance, A. Should we add Diaporthe stem canker and Cercospora leaf blight to our list of disease ratings for Ohio in 2018. C.O.R.N. Newsletter 2017-31.   Dorrance. A. Some last minute tips to manage diseases before we hit the planters - C.O.R.N.   Dorrance, A. Soybean fields with sudden death syndrome are popping up around the state. C.O.R.N. Newsletter 2017-25.   Dorrance, A. Soybean seedling issues – a perfect storm. C.O.R.N. Newsletter 2017-13.   Dorrance, A. Seed treatments for watermolds and fungi that affect soybean in Ohio. C.O.R.N. Newsletter 2017-1.   Huzar Novakowiski and Dorrance, A. Cool nights and lots of moisture can equal Sclerotinia stem rot. C.O.R.N. Newsletter 2017-21.   Faske, T.R. Field performance of selected soybean varietins in a southern root-knot nematode infested field (11/16). Arkansas Row Crops Website   Faske, T. R. Arkansas soybean disease update: Targets spot and frogeye leaf spot (8/22). Arkansas Row Crops Website   Faske, T. R. Imposter of target spot popping up in some soybean fields (6/13).  Arkansas Row Crops Website.   Harrison, M. P., Taylor, A., Buehring, N. W., Burgess, B., Solomon, W., and Allen, T. W. 2017. 2017 North MS maturity group IV and V variety trial report. Mississippi Crop Situation, December 13, 2017.   Jensen, B., Liesch, P.J., Nice, G., Renz, M., Smith, D.  2017. Pest Management in Wisconsin Field Crops, University of Wisconsin-Madison, Cooperative Extension (A3646).   Kandel, H., Helms, T., Markell, S., Ostlie, M., Schatz, B., Endres, G., Aberle, E., Indergaard, T., Zwinger, S., Neilsen, J., Schaubert, S., Cooper, K., Besemann, L., Eslinger, H., T., Rickertsen, J., Olson, R., Eriksmoen, E., Tarasenko, T., Effertz, J., Hanson, R., Hakanson, T., Henry, L., Bergman, J., Pradhan, G., Link, E., Link, A., Tjelde, T., and Jacobs., J. 2017. North Dakota Soybean Variety Trial Results for 2016 and Selection Guide. North Dakota Cooperative Extension Service Publication A843-16.    Malvick, D. and Markell, S. 2018. Brown stem rot (BSR) (PP1867-9). Pages 19-20 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867   Malvick, D. and Markell, S. 2018. Fusarium root rot (PP1867-1). Pages 3-4 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Pythium root rot (PP1867-3). Pages 7-8 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Rhizoctonia root rot (PP1867-4). Pages 9-10 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Seed and seedling disease complex (PP1867-5). Pages 11-12 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Sudden death syndrome (PP1867-8). Pages 15-16 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Anthracnose (PP1867-8). Pages 17-18 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Bacterial blight (PP1867-14). Pages 29-30 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Bacterial pustule (PP1867-15). Pages 31-32 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Bean pot mottle virus (PP1867-16). Pages 33-34 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Cercospora leaf blight (PP1867-17). Pages 35-36 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Charcoal rot (PP1867-10). Pages 21-22 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Downy mildew (PP1867-18). Pages 37-38 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Frogeye leaf blight (PP1867-19). Pages 39-40 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867   Markell, S., Malvick, D. and Nelson, B. 2018. Phytophthora root and stem rot (PP1867-2). Pages 5-6 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Pod and stem blight / Phomopsis seed decay (PP1867-11). Pages 23-24 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Powdery mildew (PP1867-20). Pages 41-42 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Malvick, D. and Markell, S. 2018. Septoria brown spot (PP1867-21). Pages 43-44 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867   Markell, S. and Malvick, D. 2018. Soybean cyst nematode (SCN) (PP1867-7). Pages 13-14 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867   Markell, S. and Malvick, D. 2018. Soyean mosaic virus (PP1867-22). Pages 45-46 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Soybean rust (PP1867-23). Pages 47-48 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. Stem canker (PP1867-12). Pages 25-26 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Markell, S. and Malvick, D. 2018. White mold (Sclerotinia stem rot) (PP1867-13). Pages 27-28 in: Markell, S. and Malvick, D. 2018. Soybean Disease Diagnostic Series. North Dakota Cooperative Extension Service Publication PP1867.   Price, P.  Soybean disease update.  Louisiana Crops Newsletter.  7:5 8-9.  May 2017.     Sikora, E., D. Delaney and K. Conner.  2017.  Frogeye Leaf Spot of Soybeans.  Alabama Cooperative Extension System ANR-2400.    Jensen, B., Liesch, P.J., Nice, G., Renz, M., Smith, D.  2017. Pest Management in Wisconsin Field Crops, University of Wisconsin-Madison, Cooperative Extension (A3646).   Smith, D.L. and Willbur, J.  2017.  Wisconsin white mold risk update – August 5. Wisconsin Crop Manager 24(20):103.   Smith, D.L. and Willbur, J.  2017.  Wisconsin white mold risk update – July 27. Wisconsin Crop Manager 24(18):96.   Smith, D.L. and Willbur, J.  2017.  Wisconsin white mold risk update – July 11. Wisconsin Crop Manager 24(17):88.   Smith, D.L. and Willbur, J.  2017.  Wisconsin white mold risk update – July 17. Wisconsin Crop Manager 24(17):94.   Smith, D.L. and Willbur, J.  2017.  Time to start preparing for white mold management in soybean. Wisconsin Crop Manager 24(16):81-82.   Smith, D.L.  2017.  Scouting for soybean seedling diseases. Wisconsin Crop Manager 24(11):57.   Smith, D.L.  2017.  2017 fungicide efficacy tables posted. Wisconsin Crop Manager 24(5):22.   Smith, D.L.  2017.  New resource available for grain production in low-margin years. Wisconsin Crop Manager 24(1):6.             Tylka, G.L., G.D. Gebhart, C.C. Marett, and M.P. Mullaney. 2017. Evaluation of soybean varieties resistant to soybean cyst nematode in Iowa – 2017. Iowa State University Extension, publication IPM‑52, 23 pp.   Tylka, G.L. and M. P. Mullaney. 2017. Soybean cyst nematode-resistant soybeans for Iowa. Iowa State University Extension Publication PM 1649, 27 pp.   Virginia R. Sykes, Alison Willette, Ryan Blair, Heather Young-Kelly, Vince Pantalone, Chris Smallwood, Angela Mcclure. 2017. Soybean Variety Tests in Tennessee 2017. UT Ext. PB 1865.   Wise, K. and Bradley, C. 2017. Is it soybean stem canker or something else? Kentucky Pest News. <a href="https://kentuckypestnews.wordpress.com/2017/08/29/is-it-soybean-stem-canker-or-something-else/">https://kentuckypestnews.wordpress.com/2017/08/29/is-it-soybean-stem-canker-or-something-else/</a>   Wise, K., Bradley, C., and Mueller, D. 2017. Determining fungicide efficacy. <a href="https://iwilltakeaction.com/uploads/files/55620-28-final-fungicide-efficacy-charts.pdf">https://iwilltakeaction.com/uploads/files/55620-28-final-fungicide-efficacy-charts.pdf</a>   Wise, K., Bradley, C., Mueller, D., and Kelly, H. 2017. Fungicide classification poster. <a href="https://iwilltakeaction.com/uploads/files/55620-27-ta-frm-fungicideclassification-poster-fnl-lr.pdf">https://iwilltakeaction.com/uploads/files/55620-27-ta-frm-fungicideclassification-poster-fnl-lr.pdf</a>         Data set:   Abendroth, Lori J., Daryl E. Herzmann, Giorgi Chighladze, Eileen J. Kladivko, Matthew J. Helmers, Laura Bowling, Michael Castellano, Richard M. Cruse, Warren A. Dick, Norman R. Fausey, Jane Frankenberger, Aaron J. Gassmann, Alexandra Kravchenko, Rattan Lal, Joseph G. Lauer, Daren S. Mueller, Emerson D. Nafziger, Nsalambi Nkongolo, Matthew O'Neal, John E. Sawyer, Peter Scharf, Jeffrey S. Strock, and Maria B. Villamil. 2017. Sustainable Corn CAP Research Data (USDA-NIFA Award No. 2011-68002-30190). National Agricultural Library - ARS - USDA. <a href="https://dx.doi.org/10.15482/USDA.ADC/1411953">https://dx.doi.org/10.15482/USDA.ADC/1411953</a>   PDMR and Experiment station reports:   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017.<a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc001.asp"> Disease reaction of maturity group III soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC001.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc003.asp">Disease reaction of maturity group IV early soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC003.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc005.asp">Disease reaction of maturity group IV LibertyLink soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC005.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc009.asp">Disease reaction of maturity group V Xtend soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC009.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc011.asp">Disease reaction of maturity group V late soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC011.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc012.asp">Disease reaction of maturity group V conventional soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC012.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc085.asp">Field evaluation of maturity group V late RR and Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in central MS, 2016.</a> Plant Disease Management Reports 11:FC085.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc087.asp">Field evaluation of maturity group IV early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot, and green stem at Stoneville, MS (clay soil, non-irrigated), 2016.</a> Plant Disease Management Reports 11:FC087.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc097.asp">Field evaluation of maturity group IV LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC097.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc103.asp">Field evaluation of maturity group V early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC103.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc105.asp">Field evaluation of maturity group V conventional soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC105.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc108.asp">Field evaluation of maturity group IV late Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC108.   Allen, T. W., Solomon, W. L., Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc110.asp">Field evaluation of maturity group IV early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC110.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc111.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC111.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc112.asp">Field evaluation of maturity group IV conventional soybean cultivars to Cercospora leaf blight, Septoria brown spot and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC112.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc113.asp">Field evaluation of maturity group V late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC113.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc115.asp">Field evaluation of maturity group IV late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC115.     Allen, T. W., Solomon, W. L., Buehring, N. W., and Harrison, M. P. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc123.asp">Field evaluation of maturity group IV late RoundUp Ready and Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in northeast MS, 2016.</a> Plant Disease Management Reports 11:FC123.   Allen, T. W., Solomon, W. L., Buehring, N. W., and Harrison, M. P. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc124.asp">Field evaluation of maturity group IV early RoundUp Ready and Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northeast MS, 2016.</a> Plant Disease Management Reports 11:FC124.   Allen, T. W., Solomon, W. L., Buehring, N. W., and Harrison, M. P. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc125.asp">Field evaluation of maturity group IV conventional and LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northeast MS, 2016.</a> Plant Disease Management Reports 11:FC125.   Allen, T. W., Solomon, W. L., Buehring, N. W., and Harrison, M. P. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc126.asp">Field evaluation of maturity group III early soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot from northeast MS, 2016.</a> Plant Disease Management Reports 11:FC126.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc127.asp">Field evaluation of maturity group V late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot at Stoneville, MS (silt loam soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC127.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc128.asp">Field evaluation of maturity group V early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot at Stoneville, MS (silt loam soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC128.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc129.asp">Field evaluation of maturity group V early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot at Stoneville, MS (silt loam soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC129.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc133.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot and green stem at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC133.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc134.asp">Field evaluation of maturity group IV early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot, and green stem at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC134.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc135.asp">Field evaluation of maturity group IV late RoundUp Ready soybean cultivars to Cercospora leaf blight at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC135.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc136.asp">Field evaluation of maturity group IV late Xtend soybean cultivars to Cercospora leaf blight at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC136.   Allen, T. W., Solomon, W. L., Buehring, N. W., and Harrison, M. P. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc137.asp">Field evaluation of maturity group V conventional and LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northeast MS, 2016.</a> Plant Disease Management Reports 11:FC137.   Allen, T. W., Solomon, W. L., Buehring, N. W., and Harrison, M. P. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc138.asp">Field evaluation of maturity group V early RoundUp Ready and Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northeast MS, 2016.</a> Plant Disease Management Reports 11:FC138.   Allen, T. W., Solomon, W. L., Buehring, N. W., and Harrison, M. P. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc139.asp">Field evaluation of maturity group V late soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northeast MS, 2016.</a> Plant Disease Management Reports 11:FC139.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc141.asp">Field evaluation of maturity group V early soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west MS, 2016.</a> Plant Disease Management Reports 11:FC141.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc142.asp">Field evaluation of maturity group IV late soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west MS, 2016.</a> Plant Disease Management Reports 11:FC142.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc144.asp">Field evaluation of maturity group V LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC144.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc145.asp">Field evaluation of maturity group V late soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC145.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc146.asp">Field evaluation of maturity group V early soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC146.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc147.asp">Field evaluation of maturity group V conventional soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC147.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc152.asp">Field evaluation of maturity group V LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northcentral MS, 2016.</a> Plant Disease Management Reports 11:FC152.     Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. Field evaluation of maturity group IV LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northcentral MS, 2016. Plant Disease Management Reports 11:FC155.    Allen, T. W., Solomon, W. L. and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc157.asp">Field evaluation of maturity group IV early soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northcentral MS, 2016.</a> Plant Disease Management Reports 11:FC157.   Allen, T. W., Solomon, W. L. and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc158.asp">Field evaluation of maturity group V late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west MS, 2016.</a> Plant Disease Management Reports 11:FC158.   Allen, T. W., Solomon, W. L. and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc160.asp">Field evaluation of maturity group V early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in central MS, 2016.</a> Plant Disease Management Reports 11:FC160.     Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc173.asp">Field evaluation of maturity group IV late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot and green stem in west MS, 2016.</a> Plant Disease Management Reports 11:FC173.     Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc176.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west MS, 2016.</a> Plant Disease Management Reports 11:FC176.   Allen, T. W., Solomon, W. L., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc177.asp">Field evaluation of maturity group V LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC177.   Adee, E., Diaz, D.R., and Little, C.R. 2017. Soybean sudden death syndrome influenced by macronutrient fertility on irrigated soybean in a corn/soybean rotation. Kansas Agricultural Experiment Station Research Reports, Vol. 3 (doi.org/10.4148/2378-5977.7431).   Brochard, N. R., Allen, T. W., Irby, J. T., and Scholtes, A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc044.asp">Evaluation of the automatic fungicide timing to manage foliar disease and protect yield in eastern Mississippi trial 1, 2016.</a> Plant Disease Management Reports 11:FC044.   Brochard, N. R., Allen, T. W., Irby, J. T., and Scholtes, A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc045.asp">Evaluation of the automatic fungicide timing to manage foliar disease and protect yield in eastern Mississippi trial 2, 2016.</a> Plant Disease Management Reports 11:FC045.   Byrne, A.M., Chilvers, M.I. 2017. Efficacy of foliar fungicides for white mold management of soybean in 2016a. Plant Disease Management Reports 11:FC030   Byrne, A.M., Chilvers, M.I. 2017. Efficacy of foliar fungicides for white mold management of soybean in 2016b. Plant Disease Management Reports 11:FC029 Emerson, M., Faske, T. R., and Hurd, K. 2017. Evaluation of Syngenta’s foliar fungicide protocol for management of frogeye leaf spot in Arkansas, 2016. PDMR 11:FC078.   Emerson, M., Faske, T. R., and Hurd, K.  2017. Evaluation of Gowan’s soybean foliar fungicide protocol for management of frogeye leaf spot of soybean in Arkansas, 2016.  PDMR 11:FC079.   Emerson, M., Faske, T. R., and Hurd, K.  2017. Evaluation of Helm Ag foliar fungicide protocol for management of frogeye leaf spot of soybean in Arkansas, 2016. PDMR 11:FC080.   Emerson, M., Faske, T. R., and Hurd, K.  2017. Evaluation of foliar fungicides for management of frogeye leaf spot of soybean in Arkansas, 2016. PDMR 11:FC081.   Emerson, M., Faske, T. R., and Hurd, K.  2017. Evaluation of premix fungicides for management of frogeye leaf spot of soybean in Arkansas, 2016. PDMR 11:FC82.   Emerson, M., Faske, T. R., and Hurd, K. 2017.  Evaluation of Arysta LifeScience foliar fungicide protocol for management of frogeye leaf spot of soybean in Arkansas, 2016. PDMR 11:FC164.   Emerson, M., Faske, T. R., and Hurd, K.  2017. Evaluation of fungicides tank mixed with a foliar fertilizer to evaluate yield enhancement in soybean in Arkansas, 2016. PDMR 11:FC165.   Hurd, K., Faske, T. R. and Emerson, M. 2017.  Efficacy of ILeVO to suppress root-knot nematode on soybean in Arkansas, 2016.  PDMR 11:N034. Hurd, K., Faske, T. R. and Emerson, M. 2017.  Evaluation of ILeVO to suppress root-knot nematode on soybean in Arkansas, 2016.  PDMR 11:N035.   Faske, T. R., Emerson, M. and Hurd, K.  2017 Evaluation of triazole fungicides for management of strobilurin-resistant frogeye leaf spot of soybean in Arkansas 2015. Pp. 79-81 in J. Ross, ed. Arkansas Soybean Research Studies 2015, Research Series 637. University of Arkansas Agriculture Experiment Station, Fayetteville.   Jackson, C. S., Faske, T. R., and Kirkpatrick, T. L. 2017. Assessment of ILeVO for management of Meloidogyne incognita on soybean. Pp.74-77 in J. Ross, ed. Arkansas Soybean Research Studies 2015, Research Series 637. University of Arkansas Agriculture Experiment Station, Fayetteville.   Kirkpatrick, T. L., Rowe, K., Faske, T. R. and Emerson, M. 2017. Comprehensive disease screening of soybean varieties in Arkansas. Pp.67-71 in J. Ross, ed. Arkansas Soybean Research Studies 2015, Research Series 637. University of Arkansas Agriculture Experiment Station, Fayetteville.   Lorenz, G., Seiter, N., Studebaker, G., Faske, T., Spurlock, T, Stark, B, Plummer, A., and Taillon, N.  2017 Evaluation of automatic applications on profitability of soybean production. Pp. 156-158 in J. Ross, ed. University of Arkansas Soybean Research Studies 2015, Research Series 637. Arkansas Agriculture Experiment Station, Fayetteville.   Mueller, B., Smith, D.L., Willbur, J., and Chapman, S. 2017. Evaluation of foliar fungicide for control of foliar diseases on soybean in Wisconsin, 2016. Plant Disease Management Reports 11:CF050.   Mueller, B., Smith, D.L., Willbur, J., and Chapman, S. 2017. Evaluation of foliar fungicide treatments for control of Sclerotinia stem rot of soybean in Hancock, Wisconsin, 2016. Plant Disease Management Reports 11:CF049.   Mueller, B., Smith, D.L., and Chapman, S. 2017. Evaluation of herbicides for control of Sclerotinia stem rot in soybean in Hancock, Wisconsin, 2016. Plant Disease Management Reports 11:CF048.   Price, P., M. A. Purvis, and H. Pruitt.  2017.  Effect of Domark and tank mixes on frogeye leaf spot of soybean, 2016.  11:FC031.   Price, P., M. A. Purvis, and H. Pruitt.  2017.  Effect of Priaxor, tank mixes, and other commercial fungicides on frogeye leaf spot of soybean, 2016.  11:FC032.   Price, P., M. A. Purvis, and H. Pruitt.  2017.  Effect of variety on charcoal rot of soybean, 2016.  11:FC033.   Price, P., M. A. Purvis, and H. Pruitt.  2017.  Effect of variety on charcoal rot of soybean, 2016.  11:FC034.   Rothrock, C. S., Faske, T. R. and Spurlock, T. N. 2017. Early-season fungicide applications to reduce colonization of Rhizoctonia solani and limit the risk of aerial blight in soybean fields under rice-soybean rotation Pp. 63-66 in J. Ross, ed. Arkansas Soybean Research Studies 2015, Research Series 637. University of Arkansas Agriculture Experiment Station, Fayetteville.   Sassenrath, G., Little, C.R., Hsiao, C.J., and Shoup, D.E. 2017. Cover crop systems to control charcoal rot in soybeans. Kansas Agricultural Experiment Station Research Reports, Vol. 3 (doi.org/10.4148/2378-5977.1383).   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc002.asp">Disease reaction of maturity group IV conventional soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC002.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc004.asp">Disease reaction of maturity group IV late soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC004.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc077.asp">Disease reaction of Maturity Group V LibertyLink soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC077.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc006.asp">Disease reaction of maturity group IV Xtend soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC006.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc008.asp">Disease reaction of maturity group V early soybean cultivars to stem canker in western MS, 2016.</a> Plant Disease Management Reports 11:FC008.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc114.asp">Field evaluation of maturity group V early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC114. Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc116.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC116.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc156.asp">Field evaluation of maturity group IV late soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northcentral MS, 2016.</a> Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc148.asp">Field evaluation of maturity group IV LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC148.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc149.asp">Field evaluation of maturity group IV late soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC149.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc150.asp">Field evaluation of maturity group IV early soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC150.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc151.asp">Field evaluation of maturity group IV conventional soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west central MS, 2016.</a> Plant Disease Management Reports 11:FC151   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc153.asp">Field evaluation of maturity group V late soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northcentral MS, 2016.</a> Plant Disease Management Reports 11:FC153.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc154.asp">Field evaluation of maturity group V early soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in northcentral MS, 2016.</a> Plant Disease Management Reports 11:FC154. Plant Disease Management Reports 11:FC156 Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc086.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot and green stem at Stoneville, MS (clay soil, non-irrigated), 2016.</a> Plant Disease Management Reports 11:FC086.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc143.asp">Field evaluation of maturity group IV early soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in west MS, 2016.</a> Plant Disease Management Reports 11:FC143.   Solomon, W. L., Allen, T. W., and Burgess, B. A. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc109.asp">2017. Field evaluation of maturity group IV late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a>FC109.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc178.asp">Field evaluation of maturity group V late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC178.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc104.asp">Field evaluation of maturity group V early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC104   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc107.asp">Field evaluation of maturity group IV LibertyLink soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in east MS, 2016.</a> Plant Disease Management Reports 11:FC107.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc174.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot, and green stem in west MS, 2016.</a> Plant Disease Management Reports 11:FC174.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc175.asp">Field evaluation of maturity group IV late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west MS, 2016.</a> Plant Disease Management Reports 11:FC175.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc161.asp">Field evaluation of maturity group IV late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in central MS, 2016.</a> Plant Disease Management Reports 11:FC161.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc162.asp">Field evaluation of maturity group IV early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in central MS, 2016.</a> Plant Disease Management Reports 11:FC162.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc163.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in central MS, 2016.</a> Plant Disease Management Reports 11:FC163.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc172.asp">Field evaluation of maturity group V early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in west MS, 2016.</a> Plant Disease Management Reports 11:FC172.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc159.asp">Field evaluation of maturity group V early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot in central MS, 2016.</a> Plant Disease Management Reports 11:FC159.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc098.asp">Field evaluation of maturity group IV late Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot in central MS, 2016.</a> Plant Disease Management Reports 11:FC098.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc091.asp">Field evaluation of maturity group IV late Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot and target spot at Stoneville, MS (silt loam soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC091.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc093.asp">Field evaluation of maturity group V LibertyLink soybean cultivars to Cercospora leaf blight at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC093.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc094.asp">Field evaluation of maturity group V late RoundUp Ready and Xtend soybean cultivars to Cercospora leaf blight at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC094.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc095.asp">Field evaluation of maturity group V early Xtend soybean cultivars to Cercospora leaf blight at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC095.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc096.asp">Field evaluation of maturity group V early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot at Stoneville, MS (clay soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC096.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc088.asp">Field evaluation of maturity group IV early RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot and green stem at Stoneville, MS (silt loam soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC088.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc089.asp">Field evaluation of maturity group IV early Xtend soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, target spot, and green stem at Stoneville, MS (silt loam soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC089.   Solomon, W. L., Allen, T. W., and Burgess, B. A. 2017. <a href="http://www.plantmanagementnetwork.org/pub/trial/pdmr/volume11/abstracts/fc090.asp">Field evaluation of maturity group IV late RoundUp Ready soybean cultivars to Cercospora leaf blight, frogeye leaf spot, Septoria brown spot, and target spot at Stoneville, MS (silt loam soil, irrigated), 2016.</a> Plant Disease Management Reports 11:FC090.

Impact Statements

Wisconsin: Weather-based models for assessing the risk of Sclerotinia sclerotiorum apothecial presence in soybean fields were developed from multi-state trials. Separate models for irrigated and non-irrigate fields were generated. These models were used to advise fungicide application timing for white mold management. In validation trials of 66 locations, models accurately predicted end-of-season white mold severity nearly 80% of the time. Models are now being programmed into smartphone apps for widespread use across the U.S. soybean belt to improve fungicide application timing and improve farmer efficiency and profitability.

Date of Annual Report: 05/06/2019

Report Information

Annual Meeting Dates: 03/04/2019 - 03/07/2019
Period the Report Covers: 03/31/2018 - 03/01/2019

Participants

Brief Summary of Minutes

Annual report attached as .pdf. Minutes here:

Minutes of the NCERA 137 – Soybean Diseases Technical Committee Meeting

March 5, 2019

Administrative Advisor: Dr. Marty Draper, Kansas State University

Chair: Dr. Travis Faske, University of Arkansas

Secretary: Dr. Carl Bradley, University of Kentucky

Immediate Past Chair: Dr. Daren Mueller, Iowa State University

Members and guests in attendance (37 total):

Tom Allen (Mississippi State University), Danise Beadle (retired),Gary Bergstrom (Cornell University), Kaitlyn Bissonnette (University of Missouri), Patricia Bollich (LSU AgCenter), Carl Bradley (University of Kentucky), Guohong Cai (USDA-ARS, Purdue University), Xianming Chen (USDA-ARS), Anne Dorrance (The Ohio State University), Marty Draper (Kansas State University), Travis Faske (University of Arkansas), Loren Giesler (University of Nebraska), Rachel Guyer (University of Tennessee), Doug Jardine (Kansas State University), Yuba Kandel (Iowa State University), Heather Kelly (University of Tennessee), Nathan Kleczewski (University of Illinois), Alyssa Koehler (University of Delaware), Leonor Leandro (Iowa State University), Chris Little (Kansas State University), Dean Malvick (University of Minnesota), Kelsey Mehl (University of Kentucky), Daren Mueller (Iowa State University), Danilo Neves (University of Kentucky), Boyd Padgett (LSU AgCenter), Trey Price (LSU AgCenter), John Rupe (University of Arkansas), Alejandro Rojas (University of Arkansas), Samantha Segalin (University of Arkansas), Ed Sikora (Auburn University), Darcy Telenko (Purdue University), Albert Tenuta (Ontario Ministry of Agriculture, Food, and Rural Affairs), Sara Thomas-Sharma (LSU AgCenter), Brian Ward (LSU AgCenter), Kelly Whiting (United Soybean Board), Tessie Wilkerson (Mississippi State University), and Kiersten Wise (University of Kentucky).

The meeting of the NCERA 137 Soybean Disease Committee was held in Pensacola Beach, Florida at the Hilton Hotel on March 5, 2019. The meeting began at 8:30 AM with Dr. Travis Faske welcoming attendees, followed by brief introductions of everyone in attendance.

Dr. Marty Draper provided an administrative update, which included an explanation of multi-state projects and a USDA-NIFA budget update. Dr. Draper mentioned that the NCERA 137’s renewal/review was last year, and that the renewal was well-received. Dr. Draper encouraged the group to seek research opportunities that could be conducted through the NCERA 137 committee.

Brief state reports were provided by representatives of each state in attendance. State reports were provided by Alabama, Arkansas, Delaware, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Minnesota, Mississippi, Missouri, Nebraska, New York, Ohio, and Tennessee. In addition, a report for Ontario, Canada was provided by Albert Tenuta. These reports provided information about soybean production for the state in 2018 as well as important diseases that affected soybean yields in each state. A common theme of soybean seed quality issues with seedborne fungal pathogens (Cercospora and Diaporthe spp.) was observed throughout several states. New and emerging/re-emerging diseases reported included southern stem canker, taproot decline, target spot, fungicide-resistant strains of the pathogens that cause frogeye leaf spot and brown spot (Cercospora sojina and Septoria glycines, respectively). In addition, many “typical” diseases/pathogens also were observed, which included brown stem rot, Cercospora leaf blight, Phytophthora root rot, root-knot nematode, Sclerotinia stem rot, soybean cyst nematode, and sudden death syndrome.

Individual presentations were provided by some attendees:

Trey Price gave a presentation on “Varietal differences in seed quality”. Samantha Segalin gave a presentation on , “Usefulness of fungicides to reduce seed infection”. Tom Allen gave a presentation on “Discussion of seed quality”. Yuba Kandel gave a presentation on “SDS multi-state project update”. Mohsin Raza gave a presentation on “Modeling and quantification of soybean yield loss to SDS”. Teddy Garcia gave a presentation on “Update on taproot decline”. Anne Dorrance gave a presentation on “Update on multi-state Phytophthora project”. Tom Allen gave a presentation on “Challenges with southern blight”. Kaitlyn Bissonnette gave a presentation on “Usefulness of seed treatments to manage SCN”. Travis Faske gave a presentation on “Do seed treatments work for root-knot nematode?”. Trey Price gave a presentation on “Progress in selecting Cercospora leaf blight resistant germplasm”.

Kelly Whiting provided an update on the United Soybean Board. Kelly praised the group for working together on several research projects. He mentioned that the request for proposals from the USB should be available soon, within a few weeks after the meeting.

Kiersten Wise provided an update and information on the Crop Protection Network (CPN). She encouraged NCERA 137 members to work together on potential new publications and outlined the steps required to put together new CPN publications.

Business Meeting

Minutes were sent out early, and there were no objections. Minutes were approved.

Darcy Telenko volunteered to be the next Secretary, and nominations were closed. Darcy Telenko was elected unanimously as the new Secretary.

Discussion on the next meeting location and date occurred. The consensus appeared to be having the meeting in association with the Southern Soybean Disease Workers (SSDW) Meeting again in 2020 at the same location (Hilton Hotel, Pensacola Beach, FL). Although the exact date was not chosen, it would likely be sometime during the week of March 2, 2020. Dr. Bradley (chair) will follow up with the SSDW and NCERA 137 members later in the year about the 2020 meeting.

Meeting was adjourned at 5:00 PM.

Respectfully submitted, Carl Bradley

Minutes Attachment:

NCERA 2018 Report.docx