Brief Summary of Minutes of Annual Meeting

Brief Summary of Minutes of Annual Meeting

Officer Succession – Current officers: Chair: Joan Davenport; Vice Chair: James Walworth; Secretary: Troy Bauder; Effective at end of meeting:  Chair:  James Walworth; Vice Chair: Troy Bauder; Secretary Nominee for 2015: Olga Walsh, All approved.

Report from WERA-103 Advisor Rich Koenig, (WERA-103 Administrative Advisor) provided the committee an update. He noted that NIMSS.org is now functional and has past reports, projects online. The proposal for reauthorization of WERA-103 was approved through September 2020. Most of the reviews were positive, but we need to highlight more involvement of students from K-12 to graduate.  Rich reviewed the process of becoming an official member of WERA 103. Having ‘official’ status is important to show diverse participation on the committee. Rich noted that regional committees are open to people outside of the Western region, but funding comes from home institution. He reminded the group that federal funding is always an issue for the programs and changes are likely at NIFA. Getting increases for capacity funding is unlikely, but no huge crisis on the horizon that Rich noted.

State and Industry Reports

State and industry representatives provided updates on significant changes and activities in their states. Emphasized was the increasing scrutiny that is being placed on plant nutrients and water quality. For example, the Des Moines lawsuit may change how agriculture, particularly tile drainage is treated in terms of point vs. NPS sources. Regulations in California now requires soil and water testing in nutrient management planning. Also, Washington has banned phosphorus in turf fertilizer and the lawsuit against dairies in the Yakima Valley has Idaho producers taking nutrient management much more seriously than before. These changes will bring both opportunities to educate producers and crop advisers about improving their management practices but raise many technical questions and research needs. The WERA-103 committee objectives dovetail well with these needs.

Lab certification and testing programs are growing. Soil health indicator testing procedures were discussed, particularly around whether the protocols have been properly established and consistently followed, and what they really predict in terms of crop response and interpretation.

Breakout sessions by Objective

Committee members then divided up by objective to review progress and plan for work in 2016-2017. Representatives reported back to the full committee and discussion followed.

Planning for 2015 Western Nutrient Management Conference

Date: March 2-3 with WERA committee meeting the previous day. Discussion started with a review of the evaluations. In general, the comments were good and the committee used the evaluations to consider topics for 2017. Jim Ippolito assumed conference chair responsibilities for 2017 and will schedule a conference call with session chairs to iron out the ideas below. Possible topics/sessions for 2017 Conference:

• Water and nitrogen management

• Groundwater protection and economic crop production

• Advances in nutrient use efficiency

• Nitrogen management tools and tests

• Soil Health

On Wednesday, April 13^th the WERA group toured the Colorado State University research farm near Ft. Collins, Colorado. Robert Miller and Troy Bauder hosted the tour. The participants learned about joint USDA/ARS and CSU research conducted there on tillage, crop rotation and fertilization practices and their impact on greenhouse gas emissions. They visited a precision irrigation pivot that is utilized to study soil water variability. Later that morning the group toured an ethanol plant in Windsor, Colorado and learned about the ethanol fermentation process and the various byproducts produced. After lunch, they visited Celestial Seasonings tea plant near Boulder, Colorado.

Future:

• Planning is underway for the 2017 Western Nutrient Management Conference to be held again in Reno, Nevada with many of the committee members will serve as session chairs, speakers or both. This conference serves a key educational venue where researchers can share the latest work with each other, certified crop advisers (CCA’s), producers, extension personnel, students and others in the agricultural industry. An emphasis this year will be to increase student involvement and presentation delivery skills by having student poster presenters provide three minute “flash and dash” summaries of their posters to generate more interest and attendance at the poster sessions.
• Two articles for Crops and Soils Magazine are planned for February and April 2017.
• Southern Idaho Nutrient Management Mini-Field Day, July 26, Kimberly, Idaho will cover the response of sugar beets and potatoes to dairy manure applications, corn N fertilizer rate studies, cover crop/manure/corn, barley irrigation and N management, and dairy manure management techniques.
• The subcommittee identified a need for a more standardized template for WERA-103s state reports. This will aid the secretary in pulling out the more useful accomplishments, impacts and indicators.  
• The subcommittee for Objective 2 indicated that Mehlich III P levels and their interpretation broadly in the western US should be addressed.

Accomplishments by objective

• Develop and/or improve nutrient recommendations for diverse cropping systems based on soil, water and plant analysis results and management strategies in the Western Region.

1. Provide nutrient correlation and calibration data for crops in the region.
2. Work toward uniformity of nutrient use recommendations for similar crop production systems in the region.
3. Evaluate and apply new nutrient analytical and interpretive methodologies.
4. Evaluate the efficacy of new fertilizers and formulations.

• Recommendations: Utah State is updating N credits for corn grown after alfalfa and evaluating fruit tree tissue testing recommendations for their conditions. Idaho is updating fertilizer recommendations for sugar beets, industry is very supportive and looking forward to the data. California is expanding the CropManage on-line decision support tool to include processing tomato irrigation and fertilization recommendations. Oregon is releasing new guide for nutrient management for snap peas.
• Sub-committee is discussing how to best analyze data sets and evaluate N recommendations around both agronomic response and environment risk. The challenge is to balance these two perhaps competing needs.
• Bryan Hopkins at BYU is building a meta-analyses on AVAIL, a phosphorus fertilizer enhancement product. Getting all the basic soil and agronomic data can help explain whether a product caused a yield response or not. Data repositories like these are really useful to evaluate for other researchers.
•  

• Promote effective use of soil, water, plant, manure and compost analytical information
• Integrate analytical test results into nutrient management software
• Maintain and update the Western States Soil Plant and Water Reference Methods Testing Manual
• Review status of soil/plant/water analysis Extension guides and summarize interpretive guidance
• Explore method for internet distribution of methods manual, analytical interpretation guides etc. Website would be for clientele outreach.The committee is going to revisit objective (2a) as a feasible goal given their resources. The Soil, Plant and Water Reference Methods (2013 edition) for the Western Region Western Soil Methods manual is going to be posted on the WERA-103 website, which is hosted by IPNI soon. The group is addressing soil testing regarding metals in soil, particularly around California Public Health Dept. provisional standards on total Cd in soil and tissue levels in spinach.  
• 1. An ALP research project has completed assessing the effects of soil pulverizing on dry soil CO₂ Solvita burst. Results show the issues associated with optimization of O₂ and effects of texture. This information will potential help standardize a methodology that is being put forward as an indicator of soil health without significant calibration and standardization.
  2. The subcommittee reviewed the lack of good soil testing labs in Oregon and Hawaii and discussed alternatives.
  3.  

• Provide education on the principles of soil-plant-animal-water system management and the tools and practices that lead to sustainable agricultural production
• Facilitate regional education among government agencies, private industry and universities through conferences, websites, extension publications, newsletters, and other appropriate media.
• Disseminate information within the Western Region to extension educators, private agencies (e.g., Certified Crop Advisors) and other interested parties (e.g., K-12 teachers) through conferences, training the trainer opportunities, and access to published interpretive materials.
• Conduct direct education to agricultural producers through conferences, grower meetings, and published interpretive materials.

• Members of the WERA-103 committee submitted two articles to date to the Crops and Soils Newsletter in 2016.
• University of California delivers a two day nitrogen management training program for CCA’s to be certified to sign off on farm management plans required under water quality regulations. Six of these training courses have been delivered to date, to a total of >600 CCAs.
• The Western Nutrient Digest was published three times in 2015-2016 and features guest editors and authors from the different sectors on the WERA-103 committee. Amber Moore is the editor in chief. Articles cover a wide range of soil and nutrient-related topics in brief, newsletter style prose. Several states circulate the digest to extension and producer groups for wide readership.
• Robert Flynn led an effort with James Walworth and Joan Davenport to obtain a grant from Western Sustainable Agriculture Research and Education (SARE) program to produce educational videos, scientific visualizations, demonstrations and animations on soil properties, processes, sampling and analyses. This series of time-lapse videos can be used as a model for soil-related demonstrations in a classroom—or to illustrate soil processes such soil erosion, runoff, and infiltration. Potential audiences include K12, master gardeners, CCA’s, undergraduates and others. (http://aces.nmsu.edu/aes/artesia/soilsampling/index.html).

Anderson, N., Chastain, T., Garbacik, C. (2015). Enhancing Nitrogen Efficiency and Seed Yield in Perennial Ryegrass Crops with Urease Inhibitors. Minneapolis, MN: 2015 International Annual Meeting Abstracts. ASA, CSSA, SSSA. https://scisoc.confex.com/scisoc/2015am/webprogram/Paper93436.html

Archer, S. R., & McIntyre, C. (2015). Report: Biocrusts, grass establishment, and restoration of working rangelands: Annual Report. Western Sustainable Agricultural Research & Education Program.

Badr, G., Hoogenboom, G., Davenport, J.R., & Smithyman, J. (2015). Estimating growing season length using vegetation indices based on remote sensing: A case study for vineyards in Washington state. Transactions of the ASABE. 58, 551-564.

Barnes, P. W., Throop, H. L., Archer, S. R., Breshears, D. D., McCulley, R. L., & Tobler, M. A. (2015). Sunlight and soil–litter mixing: Drivers of litter decomposition in drylands. Progress in Botany, 76, 273-302.

Bertagnolli AD, Meinhardt KA, Pannu M, Brown S, Strand S, Fransen SC & Stahl DA (2015) Influence of edaphic and management factors on the diversity and abundance of ammonia-oxidizing thaumarchaeota and bacteria in soils of bioenergy crop cultivars. Env Microbiol Rep 7: 312-320.

Blaser, G.E., J.C. Stark, J.M. Marshall, D. Eggett, and B.G. Hopkins. 201x. Yield response of potato to N following alfalfa, alfalfa-maize or alfalfa-wheat rotations. Agron. J.

Blaser, G.E., J.C. Stark, and B.G. Hopkins. 201x. Nitrogen use efficiency of potato to N following alfalfa, alfalfa-maize or alfalfa-wheat rotations. Agron. J.

Bronson, K., Norton, E. R., Hunsaker, D., & Andrade Sanchez, P. (2015). Improving Nitrogen Fertilizer Management for Overhead Sprinkler-Irrigated Cotton in the Western US. In 2015 Beltwide Cotton Conference (pp. 403-410). San Antonio, TX: National Cotton Council.

Bronson, K., Norton, E. R., Hunsaker, D., & Lidell, E. (2015). Updating Petiole Nitrate-Based N Fertilizer Recommendations for Arizona Cotton. In 2015 Beltwide Cotton Conference (pp. 392-397). San Antonio, TX: National Cotton Council.

Bruner, E.A., P.A. Okubara, R. Abi-Ghanem, D.J. Brown, and C.L. Reardon, 2015. Use of pressure cycling technology for cell lysis and recovery of bacterial and fungal communities from soil. BioTechniques 58(4): 171-U123. DOI: 10.2144/000114273

Bryla, D.R. and Strik, B.C. 2015. Fertilizer and soil management practices for improving the efficiency of nutrient uptake and use in northern highbush blueberry. HortTechnology 25:464-470.

Buck, R.L., B.L. Webb., V.D. Jolley, B. Roundy, and B.G. Hopkins. 2016. Comparing traditional soil extraction with ion exchange resin capsules for determining sulfur bioavailability in semiarid, low-fertility soils. Soil Sci 181:39-43. DOI:10.1097/SS.0000000000000137

Buck, R.L., B.G. Hopkins, B.L. Webb., and V.D. Jolley. 2016. Depth of ion exchange resin capsule placement impacts on estimation of nitrogen, phosphorus, and sulfur bioavailability in semi-arid, low fertility soils. Soil Sci (Accepted October 2015)

Burghelea, C., Zaharescu, D. G., Dontsova, K., Maier, R., Huxman, T., & Chorover, J. (2015). Mineral nutrient mobilization by plants from rock: influence of rock type and arbuscular mycorrhiza. Biogeochemistry, 124(1-3), 187-203.

Butnan, S., J.L. Deenik, Banyon, T., M.J. Antal, Jr, and P. Vityakon. 2016. Biochar properties influencing greenhouse gas emissions in tropical soils differing in texture and mineralogy. Journal of Environmental Quality. Accepted.

Buss, J., N. Hansen, and B.G. Hopkins. 201x. Polymer-Coated Urea rate in turfgrass. Agron. J.

Buss, J., N. Hansen, and B.G. Hopkins. 201x. Polymer-Coated Urea timing in turfgrass. Agron. J.

Castro Bustamante, S. and T.K. Hartz. 2015. Nitrogen management in organic processing tomato production: nitrogen sufficiency prediction through early-season soil and plant monitoring. HortScience 50:1055-1063.

Cendrero-Mateo, M. P., Moran, M. S., Papuga, S. A., Thorp, K. R., Alonso, L., Moreno, J., et al. (2015). Plant chlorophyll fluorescence: active and passive measurements at canopy and leaf scales with different nitrogen treatments. Journal of Experimental Botany, 67(1), 275-286.

Collins, D.P., C.A. Benedict, A. Bary, C. Cogger. 2015. Soil mapping and ad hoc power analysis to increase blocking efficiency prior to establishing a long-term field experiment. Scientific World Journal. 2015: 1-8.

Creech, E., G. E. Cardon, J. Barnhill, J. Gale, C. Israelsen, B. Kitchen, M. Nelson, and M. Pace. 2015. The Potential for Reducing N Fertilizer Inputs for Corn Production in the First Year Following Alfalfa. Utah State University Extension Fact Sheet, AG/Crops/2015-01pr.

Crow, S.E, M. Reeves, O.S. Schubert, and C.A. Sierra. 2015. Optimization of method to quantify soil organic matter dynamics and carbon sequestration potential in volcanic ash soils. Biogeochemistry 123(1):27-47.

Deenik, J. L. and M.J. Cooney. 2016. The potential benefits and limitations of corn cob and sewage sludge biochars in an infertile Oxisol. Sustainability 8(2):131-149.

Del Moro, Sarah K. 2015. Ammonia Volatilization from Nitrogen Fertilizers and Wastewater Reuse in the Columbia Basin. Scholars Archive. Oregon State University.  http://hdl.handle.net/1957/56356.

Desta, K., Fransen, S.C., Okwany, R., Peters, R.T., Pan, W.L., Collins, H., & Davenport, J.R. (2015). Soil profile nitrogen under different biofuel feedstock grasses and irrigation regimes in the irrigated arid Pacific Northwest. Soil Science Society of America Journal.

Dixon, E.K., Strik, B.C., and Bryla, D.R. 2016. Weed management, training, and irrigation practices for organic production of trailing blackberry: II. Soil and plant nutrient concentrations. HortScience 51:36-50.

Dixon, E.K., Strik, B.C., and Bryla, D.R. 2016. Weed management, training, and irrigation practices for organic production of trailing blackberry: III. Accumulation and loss of biomass, carbon, and nutrients. HortScience 51:51-66.

Downing, T. W. (2015). Calibrating dairy manure nutrient application rates (vol. EM 8768). Corvallis, OR: Oregon State University Extension Service.

Downing, T. W., Valencia, M. (2015). El Cálculo de las Tasas de Aplicación de Estiércoles Nutrientes de Granja Lechera (vol. EM 8768-S). Corvallis, OR: Oregon State University Extension Service.

Ehret, D.L., Frey, B., Forge, T., Helmer, T., and Bryla, D.R. 2015. Age-related changes with drip irrigation in highbush blueberry. HortScience 50:486-490.

Engel, R., Gravens, E., Towey, B. D. 2015. Degradation of the urease inhibitor NBPT as affected by soil pH. Soil Sci. Soc. Am. J 79:1674-1683.

Engel, R. and C. Jones. 2015. Ammonia loss from surface-applied urea to cold soils: A second look. Montana Fertilizer eFacts. No. 70. June 2015. MSU Extension. 3 p. http://landresources.montana.edu/fertilizerfacts.

Engel, R., Towey, B. , Gravens, E. 2015 Soil pH Affects Degradation of the Urease Inhibitor NBPT. ASA, CSSA & SSSA International Annual Meeting, Minneapolis, MN, November 18, 2015.

Engel, R., Miller, P., McConkey, B. Wallander, R., Feddema, R. 2015. Soil Organic C Changes in Response to 10-Yr of Increasing Cropping System Intensity in Montana. ASA, CSSA & SSSA International Annual Meeting, Minneapolis, MN, November 18, 2015.

Espe, M.B., E. Kirk, C. VanKessel, W.H. Horwath and B.A. Linquist. 2015. Indigenous nitrogen supply of rice is predicted by soil organic carbon. Soil Sci. Soc. Amer. J. 79:569-576.

Evans, M A, Skinner, DZ, Koenig, RT, Hulbert SH, and Pan, WL. 2015. Effect of phosphorus, potassium and chloride on cold tolerance of winter canola (Brassica napus L.). J. Plant Nutr. DOI:10.1080/01904167.2014.990095.

Ewing, S, W. Sigler, Jones, C., Jackson-Smith. D. 2015. Judith Basin Nitrogen Project Research Update. Newsletter #4: Sources of nitrate in shallow groundwater. July 2015. 2 p. http://waterquality.montana.edu/judith/images-files/Newsletter4.pdf.

Faber, B., Walworth, J. L., Giraud, D. D., & Silva, D. (2015). Soil and Fertilizer Management. In California Master Gardener Handbook, Second Edition (pp. 37-82). Richmond, CA: University of California Agriculture and Natural Resources.

Falinsky, K. Predicting Sediment Export into Tropical Environments to Support Ridge to Reef Management. November 2015.

Fernandez-Salvador, J., Strik, B.C., and Bryla, D.R. 2015. Liquid corn and fish fertilizers are good options for fertigation in blackberry cultivars grown in an organic production system. HortScience 50:225-233.

Fernandez-Salvador, J., Strik, B.C., and Bryla, D.R. 2015. Response of blackberry cultivars to fertilizer source in an organic fresh market production system. HortTechnology 25:277-292.

Flynn, Robert. NMSU Circular 676: Interpreting Soil Tests: Unlock the Secrets of Your Soil. By Robert Flynn, http://aces.nmsu.edu/pubs/_circulars/CR676.pdf.

Flynn, R. P. (2015). Test Your Garden Soil. Guide A-114: NMSU, Cooperative Extension Service. http://aces.nmsu.edu/pubs/_a/A114.pdf.

Flynn, R. P., Idowu, O. J. (2015). Nitrogen Fixation by Legumes. Guide A-129. NMSU, Cooperative Extension Service. aces.nmsu.edu/pubs/_a/A129.pdf.

Flynn, R. P. (2015).: Inoculation of Legumes. Guide A-130. NMSU, Cooperative Extension Service. http://aces.nmsu.edu/pubs/_a/A130.pdf.

Gasch, C.K., T. Hengl, B. Gräler, H. Meyer, T. Magney, D.J. Brown, 2015. Spatiotemporal interpolation of soil moisture, temperature, and electrical conductivity in 3D+T:

the Cook Farm data set. Spatial Statistics, 14: 70-90. DOI:10.1016/j.spasta.2015.04.001

Geary, B., J. Clark, B.G. Hopkins, and V.D. Jolley. 2015. Deficient, adequate and excess nitrogen levels established in hydroponics for biotic and abiotic stress-interaction studies in potato. J. Plant Nutr. 38: 41-50.

Girma, K., R.O. Okwany and S. Fransen. 2015. Soil nitrate following biofuel feedstock grasses and irrigation in the Pacific Northwest. Agron. J. 107:13-19.

Gleadow, R. M., Ottman, M. J., Kimball, B. A., Wall, G. W., Pinter, Jr, P. J., LaMorte, R. L., & Leavitt, S. W. (2016). Drought-induced changes in nitrogen partitioning between cyanide and nitrate in leaves and stems of sorghum grown at elevated CO2 are age dependent. Field Crops Research, 185, 97-102.

Glunk, E., K. Olson-Rutz, M. King, D. Wichman, C. Jones. 2015. Nitrate Toxicity of Montana Forages. MT200205AG. Revised 3/15 (extensively). 7 p. http://landresources.montana.edu/soilfertility/documents/PDF/pub/NitrateToxMT200205AG.pdf

Hafsteinsdottir, E. G., Rocavert, A. L., Camenzuli, D., Walworth, J. L., & Gore, D. B. (2015). Chemical immobilization of metals and metalloids by phosphates. Applied Geochemistry, 59, 47-62.

Hart, J., Strik, B., DeMoranville, C., Davenport, J.R., & Roper, T. (2015). Cranberries, a

nutrient management guide for south coastal Oregon. OSU EM 6872.

Hart, John M., Bernadine C. Strik, Carolyn DeMoranville, Joan R. Davenport, and Teryl Roper. 2015. (Revised). Cranberries (South Coastal Oregon). A nutrient management guide for south coastal Oregon EM 8672. OSU Extension Service.

Harter, T. 2015. California’s agricultural regions gear up to actively manage groundwater use and protection. California Agriculture 69:193-201.

Heerema, R., & Walworth, J. L. (2015). Soil-Applied Zinc-EDTA: Photosynthesis in 'Wichita' Pecan Grown on an Alkaline and Calcareous Soil. In 29th International

Horticulture Congress (Vol. Acta Horticulturae). Brisbane Australia: International Society for Horticultural Science.

Heinrich, A.H. and D.M. Sullivan. Increasing liming efficiency on processed vegetable farms (2015). Report to Oregon Processed Vegetable Commission. http://horticulture.oregonstate.edu/content/increasing-liming-efficiency-processed-vegetable-farms-2015

Hinds, J., K.H. Wang, and C.R.R. Hooks. 2016. Growth and yield of zucchini squash (Cucurbita pepo L.) as influenced by a sunn hemp living mulch. Biological Agriculture and Horticulture32(1):21-33.

Hopkins, B.G. 2015. Phosphorus in Plant Nutrition. Chapter 3. p. 65-126 In D.J. Pilbeam and A.V. Barker (ed.) Plant Nutrition Handbook. Second Edition. CRC Press, Taylor & Francis Group. Boca Raton, FL.

Hopkins, B.G. 201x. Meta-Analysis of 503 field sites for AVAIL. Agron. J.

Housman, M., S. Tallman, C.A. Jones, P.R. Miller and C. Zabinski. 2015. Cover Crop Diversity to Improve Soil Health in Dryland Wheat Systems of Montana. American Society of Agronomy Annual Meeting Abstracts. Minneapolis, MN. Nov 15 – 18, 2015.

Hunter, B., G. E. Cardon, S. Olsen, D.G. Alston, and D. McAvoy. Effect of Biochar Properties and Soil Incorporation Rate on Lettuce Growth.

Idowu, O. J., Flynn, R. P. (2015). Growing Plants in Caliche Soils. Guide A-151. NMSU, Cooperative Extension Service. aces.nmsu.edu/pubs/_a/A151.pdf

Jones, C., R. Kurnick, P. Miller, K. Olson-Rutz, C. Zabinski. 2015. 2015 Montana Cover Crop Survey Results. 15 p. http://landresources.montana.edu/soilfertility/documents/PDF/reports/2015CCSurveyReport.pdf

Jones, C. W. Sigler, Ewing, S., Jackson-Smith. D. 2015. Judith Basin Nitrogen Project Research Update. Newsletter #3: How do alternative management practices affect nitrate leaching and net profit? July 2015. 2 p. http://waterquality.montana.edu/judith/images-files/Newsletter3.pdf

Jones, C. and K. Olson-Rutz. 2015. Feeding the Garden Soil. The Soil Scoop. http://landresources.montana.edu/soilfertility/thesoilscoop.html. 2 p.

Jones, C. and K. Olson-Rutz. 2015. Forages: N management. The Soil Scoop. http://landresources.montana.edu/soilfertility/thesoilscoop.html. 2 p.

Jones, C. and K. Olson-Rutz. 2015. Forages: P, K, S, and micronutrient management in forages. The Soil Scoop. http://landresources.montana.edu/soilfertility/thesoilscoop.html. 2 p.

Jones, C., P. Miller, M. Burgess, S. Tallman, M. Housman, J. O’Dea, A. Bekkerman, and C. Zabinski. 2015. Cover cropping in the semi-arid west: effects of termination timing, species, and mixtures on nitrogen uptake, yield, soil quality, and economic return. In Western Nutrient Management Conference Proceedings. 11:39-44. Reno, Nev. Mar. 5-6, 2015.

Jones, C., A. John, S.A. Ewing, W.A. Sigler, D. Jackson-Smith, A. Bekkerman, P.R. Miller. 2015. Fallow replacement in dryland wheat cropping systems to increase economic returns and improve water quality in semi-arid central Montana. American Society of Agronomy Annual Meeting Abstracts. Minneapolis, MN. Nov 15 – 18, 2015.

Jones, C., R. Kurnick, P. Miller, K. Olson-Rutz, C. Zabinski. 2015. Cover Crop Decision Making: Information Sources and Barriers/Incentives for Adoption Based on a Montana Producer Survey. American Society of Agronomy Annual Meeting Abstracts. Minneapolis, MN. Nov 15 – 18, 2015.

Jones, C.D., M.R. Stevens, V.D. Jolley, B.G. Hopkins, S.L. Jensen, D. Turner, and J.M. Stettler. Evaluation of thermal, chemical, and mechanical seed scarification methods for four Great Basin Lupine species. Native Plants Journal (Accepted November 2015).

Kimura, E., H.P. Collins and S. Fransen. 2015. Biomass production and nutrient removal by switchgrass under irrigation. Agon. J. 107:204-210.

Kimura, E., S.C. Fransen, H.P. Collins, S.O. Guy, and W.J. Johnston. 2015. Breaking seed dormancy of switchgrass. Biomass and Bioenergy. 80:94-101.

Kirk, E.R., C. VanKessel, W.R. Horwath and B.A. Linquist. 2015. Estimating annual soil carbon loss in agricultural peatland soils using a nitrogen budget approach. Plos One 10(3): e0121432.

Lazcano, C., J. Wade, W.R. Horwath and M. Burger. 2015. Soil sampling protocol reliably estimates preplant NO₃^- in SDI tomatoes. California Agriculture 69:222-229.

LeMonte, J.J., V.D. Jolley, J.S. Summerhays, R.E. Terry, and B.G. Hopkins. 2016. Polymer coated urea in turfgrass maintains vigor and mitigates nitrogen’s environmental impacts. PLoS ONE 11:e0146761 DOI:10.1371/journal.pone.0146761.

LeMonte, J.J., B.G. Hopkins, V.D. Jolley, T.M. Story. 201x. Assessing atmospheric losses of nitrogen with photoacoustic infrared spectroscopy: polymer coated urea. J. Environ. Qual.

Long, D., Whitmus, J., Engel, R., Brester, G. 2015. Net returns from terrain-based variable-rate nitrogen management. Agron. J. 107:1055-1067.

Lundy, M.E., Pittelkow, C.M., Linquist, B.A., Liang, X., van Groenigen, K.J., Lee, J., Six, J., Venterea, R.T., van Kessel, C. (2015). "Nitrogen fertilization reduces yield declines following no-till adoption." Field Crops Research 183: 204-210.

Madsen, M.D., D.L. Zvirzdin, S.L. Petersen, B.G. Hopkins, and B.A. Roundy. 2015. Anchor chaining’s influence on soil hydrology and seeding success in burned piñon-juniper woodlands. Range. Ecol. Manag. 68: 231-240.

Martinez, H.E.P., A. Olivos, P.H. Brown, J.M. Clemente, C.H. Bruckner and J.L. Jifon. 2015. Short-term water stress affects NO3^- absorption by almond plants. Sci. Hort. 197:50-56.

Meki, M.N, J.R. Kinry, A.H. Youkhana, S.E. Crow, R.M. Ogoshi, M.H. Nakahata, R. Tirado-Corbala, R.G. Anderson, J. Osorio, and J. Jeong. 2015. Two-Year Growth Cycle Sugarcane Crop Parameter Attributes and Their Application in Modeling. Agronoly Journal 107(4):1310-1320.

Miller, P., A. Bekkerman, C.A. Jones, M.H. Burgess, J.A. Holmes, and R.E. Engel. 2015. Pea in rotation with wheat reduced uncertainty of economic returns in southwest Montana. Agronomy Journal. 107(2): 541-550. doi:10.2134/agronj14.0185. Open Access.

Mostafa, A. M., Ottman, M. J., Jason, R., & Burayu, W. (2015). Research Report Phosphorus Fertilizer Rate Effect on Alfalfa Yield and Soil Test P, Buckeye, 2014. University of Arizona Cooperative of Extension Publications, AZ 1672. 10 p.

Muhammad, S., B.L. Sanden, B.D. Lampinen, S. Saa, M.I. Siddiqui, D.R. Smart, A. Olivos, K.A. Shackel, T. DeJong and P.H. Brown. 2015. Seasonal changes in nutrient content and concentrations in a mature deciduous tree species: studies in almond (Prunus dulcis (Mill.) D.A. Webb). European J. Agron. 65:52-68.

Nielson, P.A., B.G. Hopkins, V.D. Jolley, and D.L. Eggett. 2012. Variable palatability of aspen for large ungulates: Mineral nutrition. J. Wildlife Manage.

Nahar, K., and W. L. Pan. 2015. Urea Fertilization: Effects on growth, nutrient uptake and root development of the biodiesel plant, castor bean (Ricinus communis L).accepted for publication, American Journal of Experimental Agriculture 5: http://www.sdiarticle1.org/prh/AJEA_2/2014/Revised-manuscript_version1_12729.pdf  

Nielson, P.A., S.B. St. Clair, and B.G. Hopkins. 201x. Digestibility factors and variable palatability of quaking aspen for large ungulates. J. Wildlife Manage.

Nocita, M., A. Stevens, B. van Wesemael, M. Aitkenhead, M. Bachmann, B. Barth, E. Ben Dor, D.J. Brown, M. Clairotte, A. Csorba, P. Dardenne, J.A.M. Demattê, V. Genoty, C. Guerrero, M. Knadel, L. Montanarella, C. Noonx, L. Ramirez-Lopez, J. Robertson, H.

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