SAES-422 Multistate Research Activity Accomplishments Report

Status: Approved

Basic Information

Participants

Local Participants:; Bailey, Clyde (cbaileyfarm@aol.com) - Bailey Farm; Benson, Fay (afb3@cornell.edu) - Cornell University; Bertone, Matt (maberto2@ncsu.edu) - North Carolina State University; Bosworth, Sid (sid.bosworth@uvm.edu) - University of Vermont (UVM); Bowdridge, Scott (Scott.Bowdridge@mail.wvu.edu) - West Virginia University; Brantly, Sid (sid.brantly@wdc.usda.gov) - USDA-NRCS; Brink, Geoff (geoffrey.brink@ars.usda.gov) - USDA-ARS; Brito, Andre (Andre.Brito@unh.edu) - University of New Hampshire; Colby, Jenn (jcolby@uvm.edu) - UVM Center for Sustainable Ag.; Cropper, Jim (jbcropper@yahoo.com) - Northeast Pasture Consortium; Dillon, Jasmine (jad520@psu.edu) - Penn State University; Dobrowolski, James (jdobrowolski@nifa.usda.gov) - USDA-NIFA; Geisinger, Justin (Not Available) - Air Hill Acres; Griggs, Thomas (thomas.griggs@mail.wvu.edu) - West Virginia University; Hagen, Kimberly (kimberly.hagen@uvm.edu) - UVM Center for Sustainable Ag.; Hall, Marvin (mhh2@psu.edu) - Penn State University; Hatton, Joe (wvfarmin@juno.com) - Hatton Farm; Hertzler, Duane (mooecho@embarqmail.com) - PA GLCI; Jones, Gordon (gjones89@vt.edu) - Virginia Tech University; Jones, Jennifer (SwiftLevel@gmail.com) - Swift Level Farm; Kleinman, Peter (peter.kleinman@ars.usda.gov) - ARS; Malot, Jana (auntjana@embarqmail.com) - Uncle Clem's Place; Miller, Kenneth (kbm.miller@gmail.com) - Toro Hill Farm; Miller, Peter (peter.miller@organicvalley.coop) - Organic Valley/CROPP; Morris, Michael (clm4880@yahoo.com) - WV Farm Bureau; Neff, Tracy (tracyneff@kingsagriseeds.com) - King's AgriSeeds; Noel, Eric (ericrnoel@hotmail.com) - Health Hero Farm; Ogles, Kevin (kevin.ogles@gnb.usda.gov) - USDA-NRCS East NTSC; Parry, Susan (susan.parry@pa.usda.gov) - USDA-NRCS; Rayburn, Edward (Ed.Rayburn@mail.wvu.edu) - West Virginia University; Rotz, Alan (alrotz@ars.usda.gov) - USDA-ARS; Sayers, Lawrason (nancyann@mcguirk.net) - Waffle Hill Farm; Schivera, Diane (dianes@mofga.org) - Forage Farm / Maine OFGA; Skinner, Howard (howard.skinner@ars.usda.gov) - USDA-ARS; Slocum, Genevieve (genevieveslocum@kingsagriseeds.com) - King's AgriSeeds; Soder, Kathy (Kathy.Soder@ars.usda.gov) - USDA-ARS; Swartzentruber, Richard (rcswartz1@yahoo.com) - Swartzentruber Homestead; Tomasula, Peggy (Peggy.Tomasula@ars.usda.gov) - USDA-ARS,ERRC,DFFRU; Van Hekken, Diane (diane.vanhekken@ars.usda.gov) - USDA-ARS,ERRC,DFFRU; Vough, Lester (vough@umd.edu) - University of Maryland; Walls, Gary (Not Available) - Walls Farm; Watson, Wes (wes_watson@ncsu.edu) - North Carolina State University; Wild, Don (wild.acres4750@gmail.com) - Wild Acres Family Farm; ; ; Remote Participants:; Darby, Heather (heather.darby@uvm.edu) - University of Vermont; Garza, Eric (Eric.Garza@uvm.edu) - University of Vermont

2015 Northeast Pasture Consortium Annual Conference & Meeting Minutes, held at the Waterfront Place Hotel & Conference Center in Morgantown, WV, March 11-12, 2015 A small but enthusiastic membership turned out for the 2015 Northeast Pasture Consortium Conference that was held at the well-appointed and service-oriented Waterfront Place Conference Center in Morgantown, West Virginia. Our conference numbers were down dramatically this year (43 attendees), in large part due to agency travel funds being severely curtailed for Extension and Natural Resources Conservation Service. Yet, the program itself was very well received by those people that did attend. Our thanks goes to the Pennsylvania Grazing Coalition who funded two Pennsylvania pasture-based farmers to attend our Conference and the University of Vermont Pasture Network that paid the hotel room rentals for other farmer members in attendance with grant money from a NRCS Conservation Innovation Grant Program. Without these funds, we would not have been able to pay all the bills with just the registration fees. We were also heartened by the attendance of Mr. Michael Morris, West Virginia Farm Bureau. He was very much interested in the findings of the literature review of riparian grazing effects on water quality, our first technical session. The Conference offered 10.5 continuing education credits to Certified Crop Advisors and Certified Forage and Grassland Professionals from ASA-CSSA-SSSA and the American Forage and Grassland Council respectively. After Jim Cropper, Executive Director, welcomed all the attendees at the opening session and gave them a brief overview of what was to take place over the two-day conference, a round-the-table self-introduction by each of the attendees was given. The conference technical sessions covered a range of timely and important topics, and were very well received. (For details, see conference summary and meeting minutes file that is attached to this reporting site.) After the conference technical sessions, a brief Business Meeting was held. Ms. Jennifer Colby, Program Coordinator of the Vermont Pasture Network, University of Vermont, was nominated and unanimously elected to be our new Public Sector Member-at-Large for 2015-2016. Mr. Richard Swartzentruber, Swartzentruber Homestead, Greenwood, DE, was nominated and unanimously elected as our new Private Sector Member-at-Large. Jim Cropper was charged with sending letter to all US representatives and Senators in the Northeast Region and Jason Weller, Chief of NRCS introducing them to the Northeast Pasture Consortium and telling them about our work. Jim Cropper was also charged with writing a letter specifically to Glenn Thompson, Chairman of the Subcommittee on Conservation & Forestry of House Agriculture Committee, introducing the Northeast Pasture Consortium to him and providing him information on our function of promoting pasture-based farming and our connection to the Pasture Systems and Watershed Management Research Unit at University Park, PA that is in his home district. Diane Schivera asked that she be sent a copy of the letter. Jim Cropper also volunteered to draft a resolution to be sent to the House Agriculture Committee and the Senate Agriculture Committee to document the need for the Conservation of Private Grazing Lands program of NRCS to be funded for the first time since its authorization in 1996. For some time, funding of grazing lands technical assistance came out of the Conservation Operations program. However, this has been discontinued and as the appropriations continue to dwindle for Conservation Operations, it is unlikely that funds will be set aside expressly for grazing lands assistance under this program. Joe Hatton asked that a copy of the resolution be sent to him. The Farmer Survey questionnaire sent out earlier in the year to all farmer members was briefly discussed. The deadline extension for sending in the questionnaires is April 1. It was estimated that it would take 10 days to analyze the input received from pasture-based farmers around the Northeast. A conference call for Private Producers to discuss the results was scheduled for April 10. Susan Parry, USDA-NRCS, Harrisburg, PA and Executive Committee member, is the contact person for this survey. Jim Cropper thanked Joe Hatton and Tom Akin for their service on the Executive Committee of the Northeast Pasture Consortium over the past four years. He further thanked Joe Hatton for his help in setting up the Conference at the Waterfront Place Hotel and Convention Center this year. The Waterfront Place was a great venue for this year's conference. Jim Cropper asked for approval to adjourn the business meeting. It was approved and the business meeting was adjourned and the Conference ended.

Accomplishments

1. Two newsletters were published, one in September 2014 and another in January 2015, and distributed primarily as attachments to emails to all of the membership. These keep the members informed about the annual conference and new developments in pasturing livestock. 2. The 2015 Annual Conference and Meeting of the Consortium was held on March 11-12 at the Waterfront Place Hotel & Conference Center in Morgantown, WV. Forty-three people attended the conference. Six poster papers were presented. Travel restrictions at the universities and USDA-NRCS hurt our attendance considerably. We worked in tandem with the Appalachian Grazing Conference that followed our conference. Both programs were well received. 3. The proceedings of the 2015 annual conference and meeting including power point presentations and handouts, poster paper abstracts, and speaker biographical sketches are cued up to be put on the Consortium website, Northeast Grazing Guide, for post-meeting access. 4. The Northeast Grazing Guide website for the Consortium is at: http://grazingguide.net/. Sarah Goslee of the Agricultural Research Service Research Unit at University Park, PA is our web master. It is continually updated as new material arrives. 5. The NRCS Conservation Innovation Grant received in late 2013 by the University of Vermont Pasture Network paid farmer members hotel room expenses. This along with registration fees allowed the Consortium to hold its annual conference this year. The Pennsylvania Grazing Lands Coalition paid for two of their farmer members to attend this year. Especially with the low turnout this year, these funds were vital to cover all our expenses for holding the conference. We continue to look for new funding sources in a very competitive environment. 6. Jim Cropper, Executive director, participated in the Nutrient Management Expert Panel of the Chesapeake Bay Agricultural Work Group via teleconferencing and Share Point during 2014-2015. Provided input on pasture nutrient management issues to support realistic modeling of nitrogen and phosphorus runoff to the Bay from the pasture landuse. Also did a literature review and synthesis of variable rate applications of phosphorus on fields to reduce soil test phosphorus in areas of the field that test well above optimum for a crop response. 7. Jim Cropper, Executive director, also participated via speaker phone with the Chesapeake Bay Ag. Workgroup and its Agriculture Land Use Loading Rates Subgroup at several teleconferences held throughout the past year to provide input on how to improve estimates on nitrogen, phosphorus and sediment losses for the pasture landuse and upgrade the Bay Model to increase its precision in modeling conservation practices effects in reducing sediment, phosphorus, and nitrogen loads to Bay waters. 8. Jim Cropper has also been involved with another Chesapeake Bay Program subgroup, the Agricultural Modeling Subcommittee's Pasture Subgroup. Here there has been controversy about the impact livestock have on stream corridors. There is a strong movement towards excluding all livestock from water courses in the Bay Watershed. Yet, there is strong evidence that this is not always true depending on pasture configuration about the stream. A narrow stream corridor pasture forces livestock to be always close, but pastures that have upland areas in them as well as a stream corridor, time spent in the stream is only about 2% of the total occupancy time. Exclusionary fencing would be a costly program for which there is no evidence that there is a favorable benefit to cost ratio. Most evidence points to a reduction in sediment and phosphorus (sometimes) and very little to no improvement in nitrogen losses. Pastures ARE grassed buffers, but the perception is that they are not. Also, loafing areas and unpaved, somewhat grassed feedlots are often viewed as being pastures. Hay bunks and other feeding facilities are often adjacent to streams creating point source pollution but attributed to the pasture landuse which they are not. Livestock confined in these areas get nearly 100 percent of their daily intake from stored forages and feedstuffs. 9. Teleconferences are held monthly by the Executive Committee to plan the next annual conference and meeting and address other issues that come up during the year. 10. The Northeast Pasture Consortium Executive Committee conducted a Survey Monkey Farmer Survey that asked ten questions of pasture-based farmers for their insight on issues of pasture management that they need technical assistance, education, or more research on to solve problems that they are having with pasturing livestock. We are currently evaluating the 71 responses received and will use this information to develop conference agendas to address those problems or issues that they have. If it is a research need, we will ask for research by the appropriate researchers, or if it is an educational or technical assistance issue see that Extension and the Natural Resources Conservation Service are involved. 11. Continuing education credit (CEU) requests were sent to the American Society of Agronomy (ASA) and the American Forage & Grassland Council (AFGC) for certified crop advisors and certified forage and grassland professionals, respectively, for the 2015 Annual Northeast Pasture Consortium Conference and Meeting. 10.5 CEU's were approved prior to the conference. Certified crop advisors and grassland professionals in attendance were able to get CEU's by signing their names to a sign-in sheet for each session granted CEU's. The completed sign-in sheets were sent to ASA and AFGC after the Conference. 12. Revised and updated research need priorities at the 2015 Northeast Pasture Consortium Annual Conference and Meeting. We used a different format this year by asking each registrant to choose, from a list of research and demonstration needs, two topics that they would like to discuss with others at concurrent planning sessions in the morning of the second day of the conference. Private sector and public sector members intermingled for the first time. Everyone agreed this new format was a much better approach to determining new directions in research and demonstration work. See the minutes of the conference for the outcomes of those sessions.

Impacts

  1. Significantly improved interactions and communications among producers (dairy, beef, sheep, goat, and horse), agribusiness suppliers, non-governmental organizations, and public research, extension, and technical transfer agencies (land-grant universities, USDA-ARS, USDANRCS) regarding pasture-based animal production systems (traditional and organic).
  2. Organic milk producers benefited from collaborative research done by UNH, UVM, Univ. Maine, USDA-ARS at University Park, and Cornell Univ. Flaxseed supplementation can improve omega-3 fatty acid content in milk to help differentiate organic milk from conventionally fed cow?s milk even after the cows are off pasture during the non-growing season. Pasture-fed cows have higher omega-3 in their milk and a very good ratio between omega-3 and omega-6 fatty acids compared to confinement-fed cows.
  3. 3. UNH, UVM, Univ. Maine, USDA-ARS at University Park, and Cornell Univ. are testing new perennial ryegrass varieties for survival and persistence. This helps many farmers who have thought about or tried improving pastures by reseeding to perennial ryegrass. The ryegrass trials this past winter were largely devastated except for the UVM trials (on sandy loam soil). The weakness of perennial ryegrass is that forage varieties do not overwinter well and the new varieties tested are no exception.
  4. 4. Animal scientist Dr. Scott Bowdridge at W. Virginia Univ. is genetically improving wool sheep to be more naturally resistant to stomach worms (hair sheep are naturally resistant to stomach worm infestation). He is crossbreeding wool sheep with hair sheep to see if the resistance will transfer and also will investigate what genetic factor is making hair sheep more resistant to parasites. If the gene can be transferred artificially, this may be the better way to maintain quality wool sheep.
  5. 5. Univ. RI and Cornell Univ. researchers are seeking new ways to control internal parasites in sheep and goat flocks on pastures, given that pharmaceuticals have lost their effectiveness in some cases. They are evaluating botanicals and pasture legumes that have anthelmintic properties. The condensed tannins of birdsfoot trefoil make it a natural dewormer, varietal differences have been found in condensed tannin concentrations. Low condensed tannin level varieties are not as effective.
  6. 6. The USDA-ARS Pasture Systems and Watershed Management Research Unit at University Park, PA was chosen to be a Climate Hub along with the ARS Research Unit in Ithaca, NY. This strengthens both locations utility within the whole ARS system. It also means that this will be linked to pasture plant species shifts that could occur due to warmer temperatures creeping northward, or not, if winters turn out to be colder as this past one was.
  7. 7. As a Long Term Agro-Ecosystem Research sites in the ARS network, the budget for the Pasture Systems and Watershed Management Research Unit increased by fifty percent over their 2014 fiscal year budget. This is very good news after the belt tightening of the past two years. They have formed a Riparian Conservation Team with Pennsylvania State Univ. to develop a Riparian Conservation Planning Tool to holistically address some of the problems with grazing riparian area pastures.
  8. 8. A resolution passed by the Consortium at their 2012 annual conference and meeting and sent to the USDA-Natural Resources Conservation Service asked for NRCS to restore funding and data collection for the Pasture National Resource Inventory. It was responded to positively again in fiscal year 2015. The Natural Resources Conservation Service National Range and Grazing Land Ecologist, Sid Brantly, attended our 2015 Conference to report on Pastureland NRI and other pasture-related programs.
  9. 10. Opinion in the Chesapeake Bay and other watersheds seems to be that only livestock exclusion will protect water quality. Exclusion may have unintended consequences, including conversion from pasture to cropland, or creating shady areas along fenced-off streams adjacent to remaining pastures, which then become bare earth, well-fertilized lounging areas close to the stream. Riparian area measures should be used in combination with upland and floodplain treatment measures, not in isolation.
  10. 11. Gordon Jones, Virginia Tech, summarized his investigations as to why orchardgrass is dying off prematurely, a problem that is most prevalent in hayfields. A warming climate along with close mowing may be harming regrowth (cutting off too much stem base where carbohydrate reserves are stored and accompanying heat stress), leading to a loss of vigor and failure to survive the winter. We will continue to monitor Gordon?s work on this, including collecting regional weather data.
  11. 12. Other reports suggest that orchardgrass die-off may be due to nitrogen fertilization without commensurate potassium fertilization, so that the orchardgrass is potassium deficient and loses vigor. In the northern part of Region, orchardgrass die-off appears to be a function of winterkill or ice sheet damage. A concerted effort to do collaborative studies on orchardgrass die-off among our researchers around the Region and to our South is in the offing.

Publications

Bishopp, Troy. 2014-2015. The Grass Whisperer Website. At: http://www.thegrasswhisperer.com/. Click on writings and then click on hotlinks to web pages listed under writings to see numerous articles on grazing management. Bowdridge, S.A., A.M. Zajac, D.R. Notter. 2015. St. Croix sheep produce a rapid and greater cellular immune response contributing to reduced establishment of Haemonchus contortus. Vet. Parasitol. 208:204-210. Jacobs, J.R., S.P Greiner, S.A. Bowdridge. 2015. Serum interleukin-4 (IL-4) production is associated with lower fecal egg count in parasite-resistant sheep. Vet. Parasitol. 211:102-105. MacKinnon, K.M., S.A. Bowdridge, I. Kanevsky-Mullarky, A.M. Zajac, D.R. Notter. 2015. Gene expression profiles of hair and wool sheep reveal importance of Th2 immune mechanisms for increased resistance to Haemonchus contortus. J. Anim. Sci. 93:2074-2082. De Wolf, B.M., A.M. Zajac, K.A. Hoffer, B.L. Sartini, S. Bowdridge, T. LaRoith, K.H. Petersson. 2014. The effect of vitamin E supplementation on an experimental Haemonchus contortus infection. Vet. Parasitol. 205: 140-149 Alber, N., Brink, G.E. 2014. Above- and below-ground grass growth responds to grazing management. University of Wisconsin Center for Integrated Agricultural Systems Experiment Station Bulletins. Research Brief No. 91. Alber, N.B., Brink, G.E., Jackson, R.D. 2014. Temperate grass response to extent and timing of grazing. Canadian Journal of Plant Science. 94:827-833. Brink, G.E., Soder, K.J. 2015. Cool-season grass sward structure influences intake of grazing cattle. American Forage and Grassland Council Conference Proceedings [CD-ROM]. Number 16. St. Louis, MO: American Forage and Grassland Council. Coblentz, W.K., Brink, G.E., Hoffman, P.C., Esser, N.M., Bertram, M.G. 2014. Fall-grown oat to extend the fall grazing season for replacement dairy heifers. Journal of Dairy Science. 97:1645-1660. Mohammed, R., Brink, G.E., Stevenson, D.M., Neumann, A.P., Beauchemin, K., Suen, G., Weimer, P.J. 2014. Bacterial communities in the rumen of Holstein heifers differ when fed orchardgrass as pasture versus hay. Frontiers in Microbiology 5. 689:1-11. Sabatier, R., Oates, L.G., Brink, G.E., Bleier, J.S., Jackson, R.D. 2015. Grazing in an uncertain environment: modeling the trade-off between production and robustness. Agronomy Journal. 107:257-264. Vadas, P.A., Powell, J.M., Busch, D.L., Brink, G.E. 2014. Monitoring runoff from cattle-grazed pastures for a phosphorus loss quantification tool. Agriculture, Ecosystems and Environment. 199:124-131. Antaya, N.T., Soder, K.J., Kraft, J., Whitehouse, N.L., Guindon, N.E., Erickson, P.S., Conroy, A., Brito, A.F. 2014. Incremental amounts of Ascophyllum nodosum meal do not improve animal performance but increase milk iodine output in early lactation dairy cows fed high-forage diets. Journal of Dairy Science. 98:1991-2004. Brito, A.F., Petit, H.V., Pepeira, A.B., Soder, K.J., Ross, S. 2014. Interactions of corn meal or molasses with a soybean-sunflower meal mix or flaxseed meal on production, milk fatty acids composition, and nutrient utilization in dairy cows fed grass hay-based diets. Journal of Dairy Science. 98:443-457. Brito, A.F., J. Chiquette, S.P. Stabler, R.H. Allen and C.L. Girard. 2015. Supplementing lactating dairy cows with a vitamin B12 precursor, 5,6-dimethylbenzimidazole, increases the apparent ruminal synthesis of vitamin B12. Animal 9: 67-75. Dorich, C.D., R.K. Varner, A.B.D. Pereira, R. Martineau, K.J. Soder, and A.F. Brito. 2015. Short communication: Use of a portable automated open-circuit gas quantification system and the sulfur hexafluoride tracer technique for measuring enteric methane emissions in Holstein cows ad libitum- or restricted-fed. J. Dairy Sci. 98:2676-2681. Resende, T.L., J. Kraft, K.J. Soder, A.B.D. Pereira, D.E. Woitschach, R.B. Reis, and A.F. Brito. 2015. Incremental amounts of ground flaxseed decreases milk production but increases n-3 fatty acids and conjugated linoleic acid in dairy cows fed high-forage diets. J. Dairy Sci. 98:4785-4799. M.D. Casler, D.J. Undersander, Y.A. Papadopolous, S. Bittman, D. Hunt, R.D. Mathison, D.H. Min, J.G. Robins, J.H. Cherney, S.N. Acharya, D.P. Belesky, S.R. Bowley, B.E. Coulman, R. Drapeau, N.J. Ehlke, M.H. Hall, R.H. Leep, R. Michaud, J. Rowsell, G.E. Shewmaker, C.D. Teutsch, and W.K. Coblentz. 2014. Sparse-Flowering Orchardgrass Represents an Improvement in Forage Quality During Reproductive Growth. Crop Sci. 54:421-429. Colby, J. 2014-2015. Vermont On-Line Pasture Calendar. At: http://www.uvm.edu/~pasture/?Page=Calendar&agenda=Network,Vermont%20Pasture&period=two month Dillon, J., Rotz, C.A. 2014. Environmental assessment of a representative grass-finishing beef operation in southern Pennsylvania[Abstract]. Joint Abstracts of the American Dairy Science and Society of Animal Science. Paper 6447. Gilker, R. and K. Voth. 2014-2015. On Pasture Website. Published weekly. At: OnPasture.com Livestock for Landscapes, 6850 W CR 24, Loveland, Colorado 80538. R. Gilker is a Northeast Pasture Consortium member from NY. Toledo, D.N., Sanderson, M.A., Herrick, J.E., Goslee, S.C. 2014. An integrated approach to grazingland ecological assessments and management interpretations. Journal of Soil and Water Conservation. 69(4):110A-114A. Hunt, S.R., MacAdam, J.W., Griggs, T.C. 2014. Lignification and Tannin Localization During the Development of Birdsfoot Trefoil Stems. Crop Sci. 54(4):1876-1886. Bailey, B. L., Griggs, T. C., Rayburn, E. B., Krause, K. M. 2014. Beef heifer growth and reproductive performance following two levels of pasture allowance during the fall grazing period. Journal of Animal Science. 92(8):3659-3669 Grabber, J., Min, D., Riday, H., Griggs, T.C., MacAdam, J.W., Cassida, K., Coblentz, W.K. 2014. Yield, Morphological Development, and Forage Quality Characteristics of European- and Mediterranean-Derived Birdsfoot Trefoil Cultivars Grown in the Colder Continental United States[Abstract]. American Society of Agronomy Annual Meeting. 2014-11-03. Poster Number 758 Hoffman, K. 2014-2015. NYGC Grazette Newsletter. NY Grazinglands Coalition. Published monthly on-line at: http://www.nrcs.usda.gov/wps/portal/nrcs/detail/ny/technical/landuse/pasture/?cid= nrcseprd366641 Orr, A.N., Soder, K.J., Brito, A., Rubano, M.D., Dell, C.J. 2014. Effect of sprouted barley grain supplementation of an herbage-based or haylage-based diet on ruminal fermentation and methane output in continuous culture. Journal of Animal Science. 97:7856-7869. Orr, A.N., Soder, K.J., Rubano, M.D., Dell, C.J. 2014. Sprouted barley for dairy cows: Nutritional composition and digestibility. USDA-ARS fact sheet. p. 1. Rayburn, E.B., Shockey, W.L., Seymour, D.A., Smith, B.D., and Basden, T.J. 2014. Residual forage mass and pasture growth. American Forage & Grassland Council 2014 Conference Proceedings. http://afgc.associationsonline.com/site_member_documents2.cfm?pk_association_document=7502 Rayburn, E.B. 2015. How to make good-quality, plastic-wrapped, round bale silage. Forage Magazine. Progressive Forage Grower. East Edition. Progressive Publishing. Main Office: Jerome, ID. 16(5):31-32. Rayburn, E.B. 2015. Stepping up grazing management. Forage Magazine. Progressive Forage Grower. East Edition. Progressive Publishing. Main Office: Jerome, ID. 16(6):14-15. Asem-Hiablie, S., Rotz, C.A., Stackhouse-Lawson, K., Battagliese, T. 2014. Assessing the sustainability of beef production[Abstract]. ASABE Annual International Meeting. p 1. Powell, J.M., Rotz, C.A., Wattiaux, M.A. 2014. Abatement of ammonia and nitrous oxide emissions from dairy farms using milk urea N (MUN). Journal of Environmental Quality. DOI:10.2134/jeq2013.09.0375. Snow, V.O., Rotz, C.A., Johnson, I.R., Hutchings, N.J., Eckard, R.J. 2014. The challenges of incorporating random animal-mediated nitrogen transfers in process-based modeling of grazed agricultural systems. Meeting Proceedings. Proc. 7th Inter. Meeting Environ. Modeling and Software, San Diego, CA. p. 1-7. Snow, V.O., Rotz, C.A., Moore, A.D., Martin-Clouaire, R., Johnson, I.R., Hutchings, N.J., Eckard, R.J. 2014. The challenges – and some solutions – to process-based modeling of grazed agricultural systems. Journal of Environmental Modeling and Software. DOI: 10.1016/j.envsoft.2014.03.009. Schrenker, D.L., Hall, M.H., Grantham, A., Kaye, J.P., Skinner, R.H. 2014. Production potential of warm-season annual pastures in rotation with corn silage. American Forage and Grassland Conference Proceedings. p 1. Skinner, R.H., Dell, C.J. 2014. Comparing pasture c sequestration estimates from eddy covariance and soil cores. Agriculture, Ecosystems and Environment. 199:52-57. Skinner, R.H., Smith, R.G., Bosworth, S.C., Kersbergen, R.J. 2014. Productivity and persistence of multi-cultivar perennial ryegrass[Abstract]. American Society of Agronomy Abstracts. p. 1. Soder, K.J., Hafla, A., Hautau, M. 2014. Mob grazing for dairy cows. Lancaster Farming (Corn Talk & Foraging Around Special Section). p. E13-14.
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