Research Soil Scientist
Merle F. Vigil
Research Leader/Soil Scientist
Nutrient Management
Phone: 970-345-0517
E-Mail: Merle.Vigil@ars.usda.gov
Education
1980 B.S. Agronomy, Colorado State University
1983 M.S. Soil Fertility, Colorado State University
1989 Ph.D. Soil Fertility/Soil Chemistry, Kansas State University
Research Interests
Mineralization-Immobilization of soil organic N and crop residue N
Nitrate leaching through soils
Crop residue management and nutrient cycling of animal manuresFertilizer use efficiency particularly with N fertilizers
The effect of soil water on N use efficiency
Management strategies to maximize fertilizer and water use efficiencies
Simulation modeling of the above processes
Projects
Adaptation of Dryland Cropping Systems for the Central Great Plains Region to Extreme Variation of Weather and Climate In-House Appropriated (D) Accession Number:429466 
Accelerated Commercial Development of Hydrotreated Renewable Jet Fuel (Hrj) from Redesigned Oilseed Feedstocks Supply Chains Reimbursable Cooperative Agreement (R) Accession Number:422400 Development of Wheat Quality, Wheat Based Crop Production Systems and Alternative Bio-Energy Crops for the Central Great Plains Non-Assistance Cooperative Agreement (S) Accession Number:427155 Develop Knowledge for the Efficacy of Using Cover Crops in Place of Summer Fallow in Dryland Wheat-fallow Cropping Non-Assistance Cooperative Agreement (S) Accession Number:430157
Publications
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Vulnerability of crops and croplands in the U.S. Northern Plains to predicted climate change-(Peer Reviewed Journal) Degree days to 50% flowering for 12 cultivars of spring canola-like mustard-(Peer Reviewed Journal) Hunter, K.M., Archer, D.W., Gesch, R.W., Vigil, M.F., Hatfield, J.L., Allen, B.L., Jabro, J.D., Kim, S., Meki, M.N., Kiniry, J.R. 2017. Degree days to 50% flowering for 12 cultivars of spring canola-like mustard. Journal of Agriculture and Ecology Research International. 11(4):1-8. Manure and tillage use in remediation of eroded land and impacts on soil chemical properties-(Peer Reviewed Journal) Mikha, M.M., Benjamin, J.G., Vigil, M.F., Poss, D.J. 2017. Manure and tillage use in remediation of eroded land and impacts on soil chemical properties. PLoS One. 12(4):1-25. doi:10.1371/journal.pone.0175533. Intensifying a semi-arid dryland crop rotation by replacing fallow with pea-(Peer Reviewed Journal) Nielsen, D.C., Vigil, M.F. 2017. Intensifying a semi-arid dryland crop rotation by replacing fallow with pea. Agricultural Water Management. 186:127-138. Evaluating potential dryland cropping systems adapted to climate change in the Central Great Plains -(Peer Reviewed Journal)Nielsen, D.C., Vigil, M.F., Hansen, N.C. 2016. Evaluating potential dryland cropping systems adapted to climate change in the Central Great Plains. Agronomy Journal. 108:2391-2405. Cover crops can affect subsequent wheat yield in the central great plains-(Peer Reviewed Journal) Nielsen, D.C., Vigil, M.F., Lyon, D.J., Higgins, R.K., Hergert, G.W., Holman, J.D. 2016. Cover crops can affect subsequent wheat yield in the central great plains. Crops and Soils. 49:51-54. N response of no-till dryland winter triticale forage -(Peer Reviewed Journal)Vigil, M.F., Poss, D.J. 2016. N response of no-till dryland winter triticale forage. Communications in Soil Science and Plant Analysis. 47(9):1117-1127. Use of manure to remediate eroded hill top soils-() Vigil, M.F., Poss, D.J., Benjamin, J.G., Mikha, M.M. 2016. Use of manure to remediate eroded hill top soils. Progressive Forage Grower. 3/33-34. Cover crop effect on subsequent wheat yield and water use efficiency in the central great plains -(Peer Reviewed Journal)Nielsen, D.C., Lyon, D.J., Higgins, R.K., Holman, J.D., Hergert, G.W., Vigil, M.F. 2015. Cover crop effect on subsequent wheat yield and water use efficiency in the central great plains. Agronomy Journal. 108:243-256. Cover crop and irrigation e¿ects on soil microbial communities and enzymes in semiarid agroecosystems of the Central Great Plains of North America-(Peer Reviewed Journal) Calderon, F.J., Nielsen, D.C., Acosta Martinez, V., Vigil, M.F., Lyon, D. 2016. Cover crop and irrigation e¿ects on soil microbial communities and enzymes in semiarid agroecosystems of the Central Great Plains of North America. Pedosphere. 26(2): 192-205. Making better decisions: 2014 Colorado winter wheat variety performance trials-() Johnson, J., Haley, S., Bosley, B., Meyer, R., Trujillo, W., Hain, J., Saure, S., Bartolo, M., Larson, K., Vigil, M.F., Stromberger, J., Byrne, P., Davis, J., Manmathan, H., Peairs, F., Jahn, C., Cokrell, D. 2015. Making Better Decisions: 2014 Colorado Winter Wheat Variety Performance trials. Agronomy Technical Report. 2015/1-59. Cumulative deficit irrigation effects on corn (Zea mays, L.) biomass and grain yield -(Peer Reviewed Journal)Benjamin, J.G., Nielsen, D.C., Vigil, M.F., Mikha, M.M., Calderon, F.J. 2015. Cumulative deficit irrigation effects on corn (Zea mays, L.) biomass and grain yield. Agricultural Water Management. 159/107-114. Cover crop water use-() Nielsen, D.C., Lyon, D.J., Hergert, G.W., Higgins, R.K., Calderon, F.J., Vigil, M.F. 2015. Cover crop water use. CSA News. Available: http://www.crops.org/publications/CSA/pdfs/60/6/12. Comparison of several Brassica species in the north central U.S. for potential jet fuel feedstock -(Peer Reviewed Journal)Gesch, R.W., Isbell, T., Oblath, E.A., Allen, B.L., Archer, D.W., Brown, J., Hatfield, J.L., Jabro, J.D., Kiniry, J.R., Long, D.S., Vigil, M.F. 2015. Comparison of several Brassica species in the north central U.S. for potential jet fuel feedstock. Industrial Crops and Products. 75(B):2-7. A comparison of corn residue and its biochar on soil C and plant growth -(Peer Reviewed Journal)Calderon, F.J., Benjamin, J.G., Vigil, M.F. 2015. A comparison of corn residue and its biochar on soil C and plant growth. PLoS One. doi:10.1371/journal.pone.0121006. Cover crops in mixtures do not use water differently than single-species plantings -(Peer Reviewed Journal)Nielsen, D.C., Lyon, D.J., Hergert, G.W., Higgins, R.K., Calderon, F.J., Vigil, M.F. 2015. Cover crops in mixtures do not use water differently than single-species plantings. Agronomy Journal. 107:1025-1038. Argonomic practices of dryland grain sorghum maturity, yield, and test weight.-() Sauer, S.M., Johnson, J.J., McMaster, G.S., Vigil, M.F. 2015. Argonomic practices of dryland grain sorghum maturity, yield, and test weight.. Extension Publications. 3(1):9-11. Agronomic comparison of several brassica species in the U.S. Corn Belt as feedstock for hydrotreated jet fuel-(Abstract Only) Gesch, R.W., Allen, B.L., Archer, D.W., Banuelos, G.S., Behrman, K.D., Brown, J., Hatfield, J.L., Jabro, J.D., Kiniry, J.R., Long, D.S., Vigil, M.F. 2014. Agronomic comparison of several brassica species in the U.S. Corn Belt as feedstock for hydrotreated jet fuel [abstract]. In: Miller, T., Alexopoulou, E. and Berti, M.T., editors. International Conference in Industrial Crops and 26th Annual Meeting of the Association for the Advancement of Industrial Crops (AAIC). Program and Abstracts. September 13-19, 2014, Athens, Greece. Agronomic factors affecting dryland grain sorghum maturity and production in northeast Colorado-(Peer Reviewed Journal) Sauer, S., Johnson, J., McMaster, G.S., Vigil, M.F. 2014. Agronomic factors affecting dryland grain sorghum maturity and production in northeast Colorado. Agronomy Journal. 106(6):2001-2012. Long term alternative crop rotation experiment: USDA-ARS Akron, Colorado-(Abstract Only) Water deficit stress effects on corn (Zea mays, L.) root: shoot ratio -(Peer Reviewed Journal)Benjamin, J.G., Nielsen, D.C., Vigil, M.F., Mikha, M.M., Calderon, F.J. 2014. Water deficit stress effects on corn (Zea mays, L.) root: shoot ratio. Open Journal of Soil Science 4:151-160. Camelina growing degree hour and base temperature requirements -(Peer Reviewed Journal)Allen, B.L., Vigil, M.F., Jabro, J.D. 2014. Camelina growing degree hour and base temperature requirements. Agronomy Journal. 106(3):940-944. Searching for synergism in dryland cropping systems in the central Great Plains -(Peer Reviewed Journal)Nielsen, D.C., Vigil, M.F. 2014. Searching for synergism in dryland cropping systems in the central Great Plains. Field Crops Research. 158:34-42. Doi:10.1016/j.fcr.2013.12.020. Fertilizer placement to maximize nitrogen use by fescue-(Peer Reviewed Journal) Standing crop residues and wind erosion-() Vigil, M.F. 2013. Standing crop residues and wind erosion. Southeast Area Extension Circular Farm and Ranch Newsletter. 1(3) 1-11. Soil management and carbon calculation methods influence changes in soil carbon estimation-(Abstract Only) Long-term tillage impacts on soil aggregation and carbon dynamics under wheat-fallow in the central Great Plains -(Peer Reviewed Journal)Mikha, M.M., Vigil, M.F., Benjamin, J.G. 2013. Long-term tillage impacts on soil aggregation and carbon dynamics under wheat-fallow in the central Great Plains. Soil Science Society of America Journal. 77:594-605. A comparison of two models to evaluate soil physical property effects on corn (Zea mays, L.)root growth -(Peer Reviewed Journal)Benjamin, J.G., Nielsen, D.C., Vigil, M.F., Mikha, M.M., Calderon, F.J. 2013. A comparison of two models to evaluate soil physical property effects on corn (Zea mays, L.)root growth. Agronomy Journal. 105:713-720. Field wind tunnel testing of two silt loam soils on the North American Central High Plains-(Peer Reviewed Journal) Van Pelt, R.S., Baddock, M.C., Zobeck, T.M., Schlegel, A.J., Vigil, M.F., Acosta Martinez, V. 2013. Field wind tunnel testing of two silt loam soils on the North American Central High Plains. Aeolian Research. 10(1):53-59. Yields in stripper header vs conventional header in dryland cropping systems-(Abstract Only) Multi-Location Study of Soil Enzyme Activities as affected by Different Manure Types, Rates, and Tillage Application Practices-(Peer Reviewed Journal) Acosta Martinez, V., Mikha, M.M., Sistani, K.R., Stahlman, F., Benjamin, J.G., Vigil, M.F., Erickson, R. 2011. Multi-location study of soil enzyme activities as affected by different manure types, rates, and tillage application practices. Agriculture. 1(1): 4-21. Spectral estimates of crop residue cover and density for standing and flat wheat stubble -(Peer Reviewed Journal)Aguilar, J.P., Evans, R.G., Vigil, M.F., Daughtry, C.S. 2012. Spectral estimates of crop residue cover and density for standing and flat wheat stubble. Agronomy Journal. 104:271-279. Field Wind Tunnel Testing of Two Silt Loam Soils in the North American Central High Plains-(Abstract Only) Van Pelt, R.S., Baddock, M., Zobeck, T.M., Schlegel, A., Vigil, M.F. 2011. Field Wind Tunnel Testing of Two Silt Loam Soils in the North American Central High Plains[abstract]. American Society of Agronomy, Crop Science Society of America,Soil Science Society of America Annual Meeting. October 16-19, 2011, San Antonio, Texas. Soil enzyme activities as affected by manure types, rates and tillage practices-(Abstract Only) Acosta Martinez, V., Mikha, M.M., Sistani, K.R., Stahlman, P.W., Benjamin, J.G., Vigil, M.F., Erickson, R. 2011. Soil enzyme activities as affected by manure types, rates and tillage practices[abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America Annual Meeting. October 16-19, 2011, San Antonio, Texas. Field Wind Tunnel Testing of Two Silt Loam Soils on the North American Central High Plains-(Abstract Only) Van Pelt, R.S., Baddock, M., Zobeck, T.M., Acosta Martinez, V., Vigil, M.F., Schlegel, A. 2011. Field Wind Tunnel Testing of Two Silt Loam Soils on the North American Central High Plains[abstract]. International Symposium on Erosion and Landscape Evolution. September 18-21, 2011, Anchorage, Alaska. Water use and yields of no-till managed dryland grasspea and yellow pea under different planting configurations-(Peer Reviewed Journal) Calderon, F.J., Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Poss, D.J. 2012. Water use and yields of no-till managed dryland grasspea and yellow pea under different planting configurations. Field Crops Research. 125:179-185. Diffuse-Reflectance Mid-Infrared Spectral Properties of Soils under Alternative Crop Rotations in a Semiarid Climate -(Peer Reviewed Journal)Calderon, F.J., Mikha, M.M., Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Reeves III, J.B. 2012. Diffuse-reflectance mid-infrared spectral properties of soils under alternative crop rotations in a semiarid climate. Communications in Soil Science and Plant Analysis. 42:17, 2143-2159. Evaluating decision rules for dryland rotation crop selection-(Peer Reviewed Journal) Nielsen, D.C., Vigil, M.F., Benjamin, J.G. 2011. Evaluating decision rules for dryland rotation crop selection. Field Crops Research. 120:254-261. Mid-Infrared Spectroscopic Properties of Humic Acid and Fulvic Acid-Soil Mixtures.-(Proceedings) Calderon, F.J., Reeves III, J.B., Vigil, M.F. 2010. Mid-Infrared Spectroscopic Properties of Humic Acid and Fulvic Acid-Soil Mixtures.. Meeting Proceedings. 15th Annual Meeting of the International Humic Substances Society, June 27-July 2, 2010. Tenerife, Spain. Simulating Alternative Dryland Rotational Cropping Systems in the Central Great Plains with RZWQM2-(Peer Reviewed Journal) Saseendran, S.A., D.C. Nielsen, Liwang Ma, L.R. Ahuja, M.F. Vigil, 2010. Simulating Alternative Dryland Rotational Cropping Systems in the Central Great Plains with RZWQM2. Agronomy Journal. 102:1521-1534. doi:10.2134/agronj2010.0141. Critical Precipitation Period for Dryland Maize Production-(Peer Reviewed Journal) Nielsen, D.C., Halvorson, A.D., Vigil, M.F. 2010. Critical Precipitation Period for Dryland Maize Production. Field Crops Research 118:259-263. doi:10.1016/j.fcr.2010.06.004 Mid-Infrared Spectroscopic Properties of Humic Acid and Fulvic Acid-Soil Mixtures-(Abstract Only) Calderon, F.J., Reeves Iii, J.B., Vigil, M.F. 2010. Mid-Infrared Spectroscopic Properties of Humic Acid and Fulvic Acid-Soil Mixtures. Meeting Abstract. Presented at the 15th International Humic Substances Society Meeting. June 27 to July 2, 2010. Pto. De la Cruz, Tenerife, Spain. Management practices to improve soil quality and productivity of eroded soil-(Abstract Only) Cropping Intensity Impacts on Soil Aggregation and Carbon Sequestration in the Central Great Plains-(Peer Reviewed Journal) Mikha, M.M., Benjamin, J.G., Vigil, M.F., Nielsen, D.C. 2010. Cropping Intensity Impacts on Soil Aggregation and Carbon Sequestration in the Central Great Plains. Soil Science Society of America Journal. 74(5):1712-1719. doi:10.2136/sssaj2009.0335. Continuous Cropping Systems Reduce Near-Surface Maximum Compaction in No-Till Soils-(Peer Reviewed Journal) Humberto, B., Stone, L.R., Schlegel, A.J., Benjamin, J.G., Vigil, M.F., Stahlman, P.W. 2010. Continuous Cropping Systems Reduce Near-Surface Maximum Compaction in No-Till Soils. Agronomy Journal. 102:1217-1225. DOI:10.2134/agronj2010.0113. Rainfall probability and EONR for dryland corn in Colorado-(Abstract Only) Vigil, M.F., Poss, D.J., Nielsen, D.C., Benjamin, J.G. 2010. Rainfall probability and EONR for dryland corn in Colorado. [Agronomy Abstract]Presented at the annual ASA/CSSA/SSSA meetings. Oct. 31 thru Nov. 5, 2010. Long Beach, CA. Critical Precipitation Period for Dryland Corn Production-(Abstract Only) Nielsen, D.C., A.D. Halvorson, M.F. Vigil. 2010. Critical Precipitation Period for Dryland Corn Production. Agronomy Abstracts. Presented at the 2010 (ASA-CSSA-SSSA) meetings. Oct. 31 thru Nov. 3, 2010. Long Beach, CA. Nitrogen Rates for Dryland Triticale Hay-(Proceedings) Vigil, M.F., Poss, D.J., Halvorson, A.D. 2010. Nitrogen Rates for Dryland Triticale Hay. Great Plains Soil Fertility Conference. Pages 189-194. March 2-3, 2010. Denver, CO. Remediation/Restoration of Degraded Soil to Improve Productivity In The Central Great Plains Region-(Proceedings) Mikha, M.M., Stahlman, P.W., Benjamin, J.G., Vigil, M.F., Geier, P.W., Poss, D.J. 2010. Remediation/Restoration of Degraded Soil to Improve Productivity In The Central Great Plains Region. Proceedings of the Great Plains Soil Fertility Conference. Pages 229-235. March 2-3, 2010. Denver, CO. Precipitation Storage Efficiency During Fallow in Wheat-Fallow Systems -(Peer Reviewed Journal)Nielsen, D.C., Vigil, M.F. 2010. Precipitation Storage Efficiency During Fallow in Wheat-Fallow Systems. Agronomy Journal. v.102(2)537-543. Alternative Dryland Cropping Systems to Wheat Fallow-(Abstract Only) Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Calderon, F.J., Mikha, M.M. 2009. Alternative Dryland Cropping Systems to Wheat Fallow. Agronomy Abstracts. Presented at the ASA-CSSA-SSSA Annual meeting. Nov. 1-5, 2009. Pittsburg, PA. Mid-Infrared and Near Infrared Calibrations for Nutritional Parameters of Triticale (Triticosecale) and Pea (Pisum sativum) -(Peer Reviewed Journal)Calderon, F.J., Reeves III, J.B., Vigil, M.F., Poss, D.J. 2009. Mid-Infrared and Near Infrared Calibrations for Nutritional Parameters of Triticale (Triticosecale) and Pea (Pisum sativum). Journal of Agriculture and Food Chemistry. 57:5136-5142. doi:10.1021/jf803936x. Sunflower Production in Skip Row Configurations for the Semi-Arid Central Plains-(Proceedings) Calderon, F.J., Schneekloth, J., Nielsen, D.C., Vigil, M.F. 2009. Sunflower Production in Skip Row Configurations for the Semi-Arid Central Plains. Meeting Proceedings. Presented at the National Sunflower Association Research Forum. Jan. 12-15, 2009. Fargo, ND. Pages 1-4. Mid-Infrared and Near-Infrared Spectroscopic Properties of Fusarium Isolates: Effects of Culture Conditions-(Proceedings) Calderon, F.J., Hanson, L.E., Panella, L.W., Reeves III, J.B., Vigil, M.F. 2009. Mid-Infrared and Near-Infrared Spectroscopic Properties of Fusarium Isolates: Effects of Culture Conditions. Meeting proceedings poster presentation at the American Phytopathological Society Annual Meeting. Aug. 1-5, 2009. Portland, OR. Mid-Infrared and Near Infrared Spectral Properties of Mycorrhizal and Non-Mycorrhizal Root Cultures-(Peer Reviewed Journal) Calderon, F.J., Acosta Martinez, V., Douds, D.D., Reeves III, J.B., Vigil, M.F. 2009. Mid-Infrared and Near Infrared Spectral Properties of Mycorrhizal and Non-Mycorrhizal Root Cultures. Journal of Applied Spectroscopy. 63(5)494-500. Regional Study of No-Till Impacts on Near-Surface Aggregate Properties that Influence Soil Erodibility -(Peer Reviewed Journal)Blanco-Cangui, H., Mikha, M.M., Benjamin, J.G., Stone, L.R., Schlegel, A.J., Lyon, D.J., Vigil, M.F., Stahlman, P.W. 2009. Regional Study of No-Till Impacts on Near-Surface Aggregate Properties that Influence Soil Erodibility. Soil Science Society of America Journal 73:1361-1368. No-Till Management Effects on Soil Water and Wind Erodibility Parameters -()Blanco, H., M.M. Mikha, J.G. Benjamin, L.R. Stone, A.J. Schlegel, D.J. Lyon, M.F. Vigil, and P.W. Stahlman. 2009. No-Till Management Effects on Soil Water and Wind Erodibility Parameters. 2009 Kansas Fertilizer Research Extension Report. Pages 100-105. Precipitation Storage Efficiency During Fallow in Wheat-Fallow Systems-(Abstract Only) Nielsen, D.C., Vigil, M.F., Benjamin, J.G. 2009. Precipitation Storage Efficiency During Fallow in Wheat-Fallow Systems. Agronomy Abstracts. Presented at the ASA-CSSA-SSSA annual meetings. Nov. 1-5, 2009. Pittsburg, PA. Restoration of Degraded/Eroded Soil under Different Management Practices in the Central Great Plains-(Abstract Only) Mikha, M.M., Benjamin, J.G., Stahlman, P.W., Vigil, M.F. 2009. Restoration of Degraded/Eroded Soil under Different Management Practices in the Central Great Plains. Agronomy Abstracts. Presented at the ASA-CSSA-SSSA annual meetings. Nov. 1-5, 2009. Pittsburg, PA. Skip-row Planting Patterns Stabilize Corn Grain Yields in the Central Great Plains -(Peer Reviewed Journal)Lyon, D.J., Pavlista, A.D., Hergert, G.W., Klein, R.N., Shapiro, C.A., Knezevic, S., Mason, S.C., Nelson, L.A., Baltensperger, D.D., Elmore, R.W., Vigil, M.F., Schlegel, A.J., Olson, B.L., Aiken, R.M. 2009. Skip-row Planting Patterns Stabilize Corn Grain Yields in the Central Great Plains. Crop Management. doi:10.1094/CM-2009-0224-02-RS. The Variable Response of Dryland Corn Yield to Soil Water Content -(Peer Reviewed Journal)Nielsen, D.C., Vigil, M.F., Benjamin, J.G. 2008. The Variable Response of Dryland Corn Yield to Soil Water Content. Agricultural Water Management 96:330-336. Pyrolysis-Molecular Beam Mass Spectrometry to Characterize Soil Organic Matter Composition in Chemically Isolated Fractions from Differing Land Uses-(Peer Reviewed Journal) Plante, A.F., Magrini-Bair, K., Vigil, M.F., Eldor, P. 2008. Pyrolysis-Molecular Beam Mass Spectrometry to Characterize Soil Organic Matter Composition in Chemically Isolated Fractions from Differing Land Uses. Biogeochemistry. DOI 10.1007/s10533-008-9218-3. Gas Flux in Tillage Field That Have Been in No-Tillage for 12 Years-(Abstract Only) Mikha, M.M., Vigil, M.F., Calderon, F.J. 2008. Gas Flux in Tillage Field That Have Been in No-Tillage for 12 Years. Agronomy Abstract. Presented at the International American Society of Agronomy meetings, Crop Science Society of America and Soil Science Society of America (ASA/CSSA/SSSA) annual meetings. Oct. 5-9, 2008. Houston, TX. Gaseous Losses of Nitrogen Other Than Through Denitrification-(Abstract Only) Francis, D.D., Vigil, M.F., Moiser, A.R. 2008. Gaseous Losses of Nitrogen Other Than Through Denitrification [abstract] . ASA-SCCA-SSSA Annual Meeting, October 5-9, 2008, Houston, Texas. 2008 CDROM. Abstract No. 749.5. Economic Optimum N Rates for Fertilizing Winter Wheat and Corn-(Abstract Only) Vigil, M.F., Nielsen, D.C., Poss, D.J. 2008. Economic Optimum N Rates for Fertilizing Winter Wheat and Corn. Agronomy Abstract. Presented at the International American Society of Agronomy meetings, Crop Science Society of America and Soil Science Society of America (ASA/CSSA/SSSA) annual meetings. Oct. 5-9, 2008. Houston, TX. Producing and Marketing Proso Millet in the Great Plains-() Lyon, D.J., Burgener, P.A., Deboer, K., Harveson, R.M., Hein, G.L., Hergert, G.W., Krall, J.M., Nielsen, D.C., Vigil, M.F. 2008. Producing and Marketing Proso Millet in the Great Plains. University of Nebraska Extension Circular #EC137. Lincoln, NE. Change in Surface Soil Carbon Under Rotated Corn in Eastern South Dakota -(Peer Reviewed Journal)Pikul Jr, J.L., Johnson, J.M., Schumacher, T., Vigil, M.F., Riedell, W.E. 2008. Change in Surface Soil Carbon Under Rotated Corn in Eastern South Dakota. Soil Science Society of America Journal. 72:1738-1744. Proso Millet Yield and Residue Mass Following Direct Harvest with a Stripper-header-(Abstract Only) Nielsen, D.C., Henry, W.B., Vigil, M.F., Calderon, F.J., West, M.S. 2008. Proso Millet Yield and Residue Mass Following Direct Harvest with a Stripper-header. Agronomy Abstract. Presented at the International American Society of Agronomy meetings, Crop Science Society of America and Soil Science Society of America (ASA/CSSA/SSSA) annual meetings. Oct. 5-9, 2008. Houston, TX. Alternative Crop Rotations in the Semi-arid Central Great Plains Region: How Much Fallow? Evaluating the Economics-(Proceedings) Vigil, M.F., Mikha, M.M., Nielsen, D.C., Benjamin, J.G., Calderon, F.J. 2008. Alternative Crop Rotations in the Semi-arid Central Great Plains Region: How Much Fallow? Evaluating the Economics. Meeting Proceedings. Presented at the XXI Congreso Argentino de la Ciencia Del Suelo. 13 al 16 de Mayo de 2008. Potrero de los Funes (San Luis) Argentina. Page 524. Organic Carbon Effects on Soil Physical and Hydraulic Properties in a Semi-arid Climate-(Peer Reviewed Journal) Benjamin, J.G., Mikha, M.M., Vigil, M.F. 2008. Organic Carbon Effects on Soil Physical and Hydraulic Properties in a Semi-arid Climate. Soil Science Society of America Journal. 72:1357-1362. doi:10.2136/sssaj2007.0389. Long-Term Tillage Affects on Soil Aggregation and Carbon Sequestration-(Abstract Only) Mikha, M.M., Benjamin, J.G., Vigil, M.F. 2008. Long-Term Tillage Affects on Soil Aggregation and Carbon Sequestration. Meeting Abstract. Presented at the Colorado Conservation Tillage meeting. Feb. 5-6, 2008. Greeley, Colo. Managing N rates for reduce-till Dryland Wheat-(Proceedings) Vigil, M.F., Poss, D.J. 2008. Managing N Rates for Reduce-till Dryland Wheat. Meeting Proceedings. Proceedings of the 5th Annual Cover Your Acres Winter Conference. Pages 7-11. Oberlin, KS. January 22-23, 2008. Best Management Practices for Remediation/Restoration of Degraded Soils in the Central Great Plains Region-(Proceedings) Mikha, M.M., Vigil, M.F., Benjamin, J.G., Poss, D.J., Calderon, F.J. 2008. Best Management Practices for Remediation/Restoration of Degraded Soils in the Central Great Plains Region. Meeting Proceedings of the 18th High Altitude Revegetation Workshop #18. Information Series #105. Pages 461-470. March 4-6, 2008. Fort Collins, Colo. A Use of Skip-Row Planting as a Strategy for Drought Mitigation in the West Central Great Plains-(Proceedings) Vigil, M.F., Henry, W.B., Calderon, F.J., Poss, D.J., Nielsen, D.C., Benjamin, J.G., Klein, R. 2008. A use of Skip-row Planting as a Strategy for Drought Mitigation in the West Central Great Plains. Meeting Proceedings. Presented at the 2008 Great Plains Soil Fertility Conference. Denver, Colo. March 5, 2008. Vol. 12:101-106. Proso millet yield and residue mass following direct harvest with a stripper-header-(Peer Reviewed Journal) Henry, W.B., Nielsen, D.C., Vigil, M.F., Calderon, F.J., West, M.S. 2008. Proso millet yield and residue mass following direct harvest with a stripper-header. Agronomy Journal. 100:580-584. Proso Millet Yield and Residue Mass Following Direct Harvest with a Stripper-header-(Peer Reviewed Journal) Henry, W.B., Nielsen, D.C., Vigil, M.F., Calderon, F.J., West, M.S. 2008. Proso Millet Yield and Residue Mass following Direct Harvest with a Stripper-Header. Agronomy Journal 100:580-584. A Comparison of Dryland Grasspea (Lathyrus sativus L.) and Admiral Pea (Pisum sativum L.) Grown Under Different Row Spacings-(Proceedings) Calderon, F.J., Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Mikha, M.M. 2008. A comparison of Dryland Grasspea (lathyrus sativus l.) and Admiral Pea (pisum sativum l.) Grown Under Different Row Spacings. Meeting Proceedings. Presented at the 2008 Great Plains Soil Fertility Conference. Denver, Colo. March 5, 2008. Vol. 12:107-111. Soil Aggregation and Carbon Sequestration as affected by Long-Term Tillage Practices-(Abstract Only) Mikha, M.M., Benjamin, J.G., Vigil, M.F. 2007. Soil Aggregation and Carbon Sequestration as affected by Long-Term Tillage Practices. Agronomy Abstracts. Presented at the International American Society of Agronomy Meetings, Crop Science Society of America and Soil Science Society of America (ASA/CSSA/SSSA) annual meetings. Nov. 5-9, 2007. New Orleans, LA. Comparison of Diffuse Reflectance Fourier Transform Mid-Infrared and Near-Infrared Spectroscopy with Grating-Based Near-Infrared for the Determination of Fatty Acids in Forages-(Peer Reviewed Journal) Calderon, F.J., Reeves III, J.B., Foster, J.G., Clapham, W.M., Fedders, J.M., Vigil, M.F., Henry, W.B. 2007. Comparison of Diffuse Reflectance Fourier Transform Mid-Infrared and Near-Infrared Spectroscopy with Grating-Based Near-Infrared for the Determination of Fatty Acids in Forages. Journal of Agricultural and Food Chemistry 55:8302-8309. Skip-row Corn and Sorghum in the West Central Great Plains-(Abstract Only) Vigil, M.F., Nielsen, D.C., Poss, D.J., Henry, W.B. 2007. Skip-row Corn and Sorghum in the West Central Great Plains. Agronomy Abstracts. Presented at the International American Society of Agronomy meetings, Crop Science Society of America and Soil Science Society of america (ASA/CSSA/SSSA) annual meetings. Nov. 5-9, 2007. New Orleans, LA. Changes in Soil Organic Carbon of Crop Rotations in the Northern Corn Belt-(Abstract Only) Pikul Jr, J.L., Schumacher, T.E., Vigil, M.F., Riedell, W.E. Changes in Soil Organic Carbon of Crop Rotations in the Northern Corn Belt. In Annual Meetings Abstracts (CD-ROM). ASA, CSSA, SSSA, Madison, WI. 2007. Modeling of the N Cycle-() Cabrera, M., Molina, J.A., Vigil, M.F. 2008. Modeling of the N Cycle. Book Chapter In Nitrogen in Agricultural Systems. 18:695-730. American Society of Agronomy, Inc. Madison, WI. Diffuse Reflectance Fourier Transform Mid-Infrared Spectral Properties of Forages with Varied Fatty Acid Content-(Abstract Only) Calderon, F.J., Reeves Iii, J.B., Foster, J.G., Clapham, W.M., Fedders, J.M., Vigil, M.F., Henry, W.B. 2007. Diffuse Reflectance Fourier Transform Mid-Infrared Spectral Properties of Forages with Varied Fatty Acid Content. Meeting Abstract. Presented at the 2007 National Federation of Analytical Chemistry and Spectroscopy Societies annual meeting. Oct. 14-18, 2007. Memphis, TN. Soil Water Extraction Patterns in Skip Row Corn, Sorghum, and Sunflower-(Abstract Only) Nielsen, D.C., Vigil, M.F., Calderon, F.J., Schneekloth, J., Poss, D.J., Henry, W.B., Benjamin, J.G. 2007. Soil Water Extraction Patterns in Skip Row Corn, Sorghum, and Sunflower. Meeting Abstract. Presented at the National American Society of Agronomy Annual Meeting. Nov. 5-8, 2007. New Orleans, LA. Alternative No-till Rotations and Drought Mitigation Research in the Central Great Plains Region-(Abstract Only) Vigil, M.F. 2007. Alternative No-till Rotations and Drought Mitigation Research in the Central Great Plains Region. Meeting Abstract. Annual Soil and Water Conservation Society Conference. July 24-26, 2007. Tampa, FL. History of the Central Great Plains Research Station-() Nielsen, D.C., Greb, B.W., Vigil, M.F., Mickelsen, R.H. 2007. History of the Central Great Plains Research Station. Agricultural Research Service Publication. Pgs. 1-55. Fine Tuning Your Lease-() Palic, D.B., Dunn, G.H., Vigil, M.F., Burgener, P.A. 2007. Fine Tuning Your Lease. No Till Farmer. Volume 36, No. 7, pp14-15, July 2007. Diffuse Reflectance Fourier Transform Mid-infrared Spectral Properties of Forages with Varied Fatty Acid Content-(Abstract Only) Calderon, F.J., Reeves Iii, J.B., Foster, J.G., Clapham, W.M., Fedders, J.M., Vigil, M.F., Henry, W.B. 2007. Diffuse Reflectance Fourier Transform Mid-infrared Spectral Properties of Forages with Varied Fatty Acid Content. Meeting Abstract. Presented at the Federation of Analytical Chemistry and Spectroscopy Societies Conference. October 14-18, 2007. Memphis, TN. Microbial communities and enzyme activities in soils under alternative crop rotations compared to wheat-fallow for the Central Great Plains-(Peer Reviewed Journal) Acosta Martinez, V., Mikha, M.M., Vigil, M.F. 2007. Microbial communities and enzyme activities in soils under alternative crop rotations compared to wheat-fallow for the Central Great Plains. Applied Soil Ecology. 37:41-52. Cropping Intensity Effects on Physical Properties of a No-till Silt Loam Soil-(Peer Reviewed Journal) Benjamin, J.G., Mikha, M.M., Nielsen, D.C., Vigil, M.F., Calderon, F.J., Henry, W.B. 2007. Cropping Intensity Effects on Physical Properties of a No-till Silt Loam Soil. Soil Science Society of America Journal 71:1160-1165. Optimal Nitrogen Fertilization of Dryland Wheat-(Proceedings) Vigil, M.F. 2007. Optimal Nitrogen Fertilization of Dryland Wheat. Meeting Proceedings. Research Update 2007. Presented at the High Plains Ag Lab, Feb. 15, 2007. Sidney, Nebr. Pages 20-23. Weed control possibilities and harvest strategies for the Omega-3 fatty acid producing crop common purslane (Portulacca oleracea var. sativa)-(Abstract Only) Henry, W.B., Nielsen, D.C., Foster, J.G., Calderon, F.J., Vigil, M.F. 2007. Weed control possibilities and harvest strategies for the Omega-3 fatty acid producing crop common purslane (Portulacca oleracea var. sativa) [abstract]. Proceedings 2007 Weed Science Society of America Annual Meeting. p. 56. Soil Carbon and Enzyme Activities as affected by Cropping Intensity and Tillage-(Abstract Only) Mikha, M.M., Acosta Martinez, V., Vigil, M.F. 2007. Soil Carbon and Enzyme Activities as affected by Cropping Intensity and Tillage. Meeting Abstract. Skip-row Planting: A Strategy for Stabilizing Dryland Corn/Sorghum Yields-(Proceedings) Vigil, M.F., Henry, W.B., Klein, B. 2007. Skip-row Planting: A Strategy for Stabilizing Dryland Corn/Sorghum Yields. Proceedings of the Colorado Conservation Tillage Association and National Sunflower Association 19th High Plains No-Till Conference. January 30-31, 2007. Island Grove Regional Park. Greeley, Colo. Pages Soil Aggregation and Enzyme Activities as affected by Management Practices-(Abstract Only) Mikha, M.M., Acosta Martinez, V., Vigil, M.F. 2006. Soil Aggregation and Enzyme Activities as affected by Management Practices. Agronomy Abstracts. Presented at the International American Society of Agronomy Meetings/Soil Science Society of America (ASA/CSSA/SSSA) Annual Meetings. November 12-16, 2006. Indianapolis, IN. Skip-Row Planting as a Drought Avoidance Strategy in the West Central Great Plains-(Abstract Only) Vigil, M.F., Henry, W.B., Nielsen, D.C., Calderon, F.J., Benjamin, J.G., Klien, R. 2006. Skip-Row Planting as a Drought Avoidance Strategy in the West Central Great Plains. Agronomy Abstracts. Presented at the National American Society of Agronomy Meetings/Soil Science Society of America (ASA/SSSA)Annual Meetings. November 13-16, 2006. Indianapolis, IN. Skip-row Planting in the CGPR as a Drought Mitigation Strategy-(Abstract Only) Vigil, M.F., Henry, W.B., Poss, D.J., Nielsen, D.C., Calderon, F.J., Benjamin, J.G., Klein, R. 2006. Skip-row Planting in the CGPR as a Drought Mitigation Strategy. Meeting Abstract. Presented at the 18th World Congress of Soil Science in Phildelphia, PA July 9-13, 2006. Evaluating Decision Rules for Dryland Crop Selection-(Abstract Only) Nielsen, D.C., Vigil, M.F., Benjamin, J.G. 2006. Evaluating Decision Rules for Dryland Crop Selection. Agronomy Abstracts. Presented at the International American Society of Agronomy Meetings/Soil Science Society of America (ASA/CSSA/SSSA) Annual Meetings. November 12-16, 2006. Indianapolis, IN. FORAGE YIELD RESPONSE TO WATER USE FOR DRYLAND CORN, MILLET, AND TRITICALE IN THE CENTRAL GREAT PLAINS-(Peer Reviewed Journal) Nielsen, D.C., Vigil, M.F., Benjamin, J.G. 2006. Forage yield response to water use for dryland corn, millet, and triticale in the Central Great Plains. Agronomy Journal. 98:992-998. Proso Millet Harvest: A Comparison of Conventional Harvest and Direct Harvest with a Stripper Header-() Henry, W.B., Vigil, M.F., Nielsen, D.C. 2006. Proso Millet Harvest: A Comparison of Conventional Harvest and Direct Harvest with a Stripper Header. Conservation Tillage Fact Sheet. CROPPING INTENSITY AND TILLAGE AFFECTS ON CARBON SEQUESTRATION AND ENZYME ACTIVITIES-(Abstract Only) Mikha, M.M., Acosta Martinez, V., Vigil, M.F. 2006. Cropping intensity and tillage affects on carbon sequestration and enzyme activities. Meeting of the 18th World Congress of Soil Science. July 9-15, 2006. Philadelphia, Pennsylvania. GREAT PLAINS CROPPING SYSTEM STUDIES FOR SOIL QUALITY ASSESSMENT-(Peer Reviewed Journal) Varvel, G.E., Riedell, W.E., Deibert, E., Mcconkey, B., Tanaka, D.L., Vigil, M.F., Schwartz, R.C. 2006. Great plains cropping system studies for soil quality assessment. Renewable Agriculture and Food System 21:3-14. CARBON SEQUESTRATION AND AGGREGATE SIZE DISTRIBUTION AS AFFECTED BY CROPPING INTENSITY-(Abstract Only) Mikha, M.M., Vigil, M.F., Benjamin, J.G., Nielsen, D.C., Henry, W.B., Calderon, F.J. 2005. Carbon sequestration and aggregate size distribution as affected by cropping intensity. Agronomy Abstract. Presented at the 2005 ASA, CSSA-SSSA International Annual Meeting. Nov. 6-10, 2005. Salt Lake City, UT. HOW MUCH FALLOW; EVALUATING THE ECONOMICS OF ALTERNATIVE ROTATIONS AT AKRON, COLORADO-(Abstract Only) Vigil, M.F., Nielsen, D.C., Henry, W.B., Benjamin, J.G., Mikha, M.M., Calderon, F.J. 2005. How much fallow: Evaluating the economics of alternative rotations at Akron, Colorado. Agronomy Abstract. Presented at the 2005 ASA,CSSA-SSSA International Annual Meeting. Nov. 6-10, 2005. Salt Lake City, UT THE VARIABLE RESPONSE OF DRYLAND CORN YIELD TO SOIL WATER AT PLANTING-(Abstract Only) Nielsen, D.C., Vigil, M.F., Benjamin, J.G. 2005. The variable response of dryland corn yield to soil water at planting. Agronomy Abstracts. Presented at the 2005 ASA, CSSA-SSSA International Annual Meeting. Nov. 6-10, 2005. Salt Lake City, UT. CROPPING SYSTEM INFLUENCES ON SOIL CHEMICAL PROPERTIES AND SOIL QUALITY IN THE GREAT PLAINS-(Peer Reviewed Journal) Mikha, M.M., Vigil, M.F., Liebig, M.A., Bowman, R.A., Mcconkey, B., Deibert, E., Pikul Jr, J.L. 2006. Cropping system influences on soil chemical properties and soil quality in the Great Plains. Renewable Agriculture and Food System. 21(1); 26-35. Online DOI:10.1079/RAF2005123. SOIL CARBON AND NITROGEN IN DRYLAND CROPPING SYSTEMS-(Abstract Only) Mikha, M.M., Vigil, M.F. 2005. Soil carbon and nitrogen in dryland cropping systems. Meeting Abstract. Third USDA Symposium on Greenhouse Gases & Carbon Sequestration in Agriculture and Forestry. March 21-24, 2005. Baltimore, Maryland. p. 175. EFFECTIVENESS OF RZWQM FOR SIMULATING ALTERNATIVE GREAT PLAINS CROPPING SYSTEMS-(Peer Reviewed Journal) Saseendran, S.A., Nielsen, D.C., Ma, L., Ahuja, L.R., Vigil, M.F., Benjamin, J.G., Halvorson, A.D. 2005. Effectiveness of RZWQM for simulating alternative Great Plains cropping systems. Agronomy Journal 97:1183-1193. EFFECTIVENESS OF RZWQM FOR SIMULATING ALTERNATIVE GREAT PLAINS CROPPING SYSTEMS-(Proceedings) Anapalli, S.A., Nielsen, D.C., Ma, L., Ahuja, L.R., Vigil, M.F., Benjamin, J.G., Halvorson, A.D. 2005. Effectiveness of RZWQM for simulating alternative great plains cropping systems. Proceedings from the 35th Biological Systems Simulation Conference. April 19-21, 2005. Phoenix, AZ. P. 37-38. NUTRIENT MANAGEMENT-() Vigil, M.F., Lamond, R., Meyer, R. 2005. Nutrient management. High Plains Sunflower Production Handbook. P. 4-6. CROP ROTATIONS AND RESIDUE MANAGEMENT-() Lyon, D., Vigil, M.F., Nielsen, D.C. 2005. Crop rotations and residue management. High Plains Sunflower Production Handbook. P. 35-37. LEGUME GREEN FALLOW EFFECT ON SOIL WATER CONTENT AT WHEAT PLANTING AND WHEAT YIELD-(Peer Reviewed Journal) Nielsen, D.C., Vigil, M.F. 2005. Legume green fallow effect on soil water content at wheat planting and wheat yield. Agronomy Journal. 97:684-689. CHANGES IN SOIL AFTER 14 YEARS OF NO-TILL ALTERNATIVE CROP ROTATION RESEARCH-(Proceedings) Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Henry, W.B., Mikha, M.M., Calderon, F.J., Anderson, R.L., Bowman, R.A. 2005. Changes in soil after 14 years of no-till alternative crop rotation research. Proceedings of the 17th Annual Winter Conference, Colorado Conservation Tillage Association in cooperation with National Sunflower Association presents The High Plains No-Till Conference. Feb. 1-2. 2005. Island Grove Park, Greeley, CO. P. L1-L6. SIMULATING PLANTING DATE EFFECTS ON CORN PRODUCTION USING RZWQM AND CERES-MAIZE-(Peer Reviewed Journal) Saseendran, S.A., Ma, L., Nielsen, D.C., Vigil, M.F., Ahuja, L.R. 2005. Simulating planting date effects on corn production using RZWQM and CERES-Maize Models. Agronomy Journal. 97:58-71 (2005). NITROGEN MINERALIZATION FROM ORGANIC RESIDUES: RESEARCH OPPORTUNITIES-(Peer Reviewed Journal) Cabrera, M.L., Kissel, D.E., Vigil, M.F. 2005. Nitrogen mineralization from organic residues: research opportunities. Environmental Quality. v34:75-79. EVALUATING THE ROTATION EFFECT IN ALTERNATIVE ROTATIONS AT AKRON, COLORADO-(Abstract Only) Vigil, M.F., Nielsen, D.C., Henry, W.B., Benjamin, J.G., Mikha, M.M., Anderson, R.L. 2004. Evaluating the rotation effect in alternative rotations at Akron, Colorado. Agronomy Abstracts. Presented at the ASA-CSSA-SSSA 2004 Annual Meetings. Oct. 31-Nov. 4, 2004. Seattle, WA. CROP ROTATION AND TILLAGE EFFECTS ON SOIL HYDRAULIC PROPERTIES-(Abstract Only) Benjamin, J.G., Nielsen, D.C., Vigil, M.F., Mikha, M.M., Henry, W.B. 2004. Crop rotation and tillage effects on soil hydraulic properties. Agronomy Abstracts. Presented at the International ASA-CSSA-SSSA Annual Meeting. Oct. 31-Nov. 4, 2004. Seattle, WA. THE EFFECT OF ALTERNATIVE HARVEST STRATEGIES ON RESIDUE IN THE CENTRAL GREAT PLAINS-(Abstract Only) Henry, W.B., Nielsen, D.C., Vigil, M.F. 2004. The effect of alternative harvest strategies on residue in the central Great Plains. Agronomy Abstracts. Presented at the 2004 ASA-CSSA-SSSA International Annual Meeting. Oct. 31-Nov. 4, 2004. Seattle, WA PREDICTING WINTER WHEAT YIELD FROM TEMPERATURE AND RAINFALL-(Abstract Only) Nielsen, D.C., Halvorson, A.D., Vigil, M.F., Byrne, P.F. 2004. Predicting winter wheat yield from temperature and rainfall. Agronomy Abstracts. Presented at the 2004 ASA-CSSA-SSSA International Annual Meeting. Oct. 31-Nov. 4, 2004. Seattle, WA MODELING ALTERNATIVE CROPPING SYSTEMS FOR CENTRAL GREAT PLAINS USING RZWQM-(Proceedings) Anapalli, S.S., Nielsen, D.C., Ma, L., Ahuja, L.R., Vigil, M.F., Benjamin, J.G. 2004. Modeling alternative cropping systems for central great plains using RZWQM. Proceedings of the International Workshop on Applications, Enhancements and Collaborations of ARS RZWQM and GPFARM Models. April 20-22, 2004. p.22-23. CROPPING SEQUENCE IN A LONG-TERM DRYLAND ROTATION STUDY-(Abstract Only) Henry, W.B., Vigil, M.F., Nielsen, D.C., Benjamin, J.G., Anderson, R.L., Bowman, R.A. 2004. Cropping sequence in a long-term dryland rotation study. Meeting Abstract. Presented at the WSSA 2004 Annual Meeting, February 2004. Kansas City, MO. REGISTRATION OF 'HORIZON' PROSO MILLET-(Peer Reviewed Journal) Baltensperger, D.D., Frickel, G.E., Krall, J.M., Vigil, M.F., Hain, J., Johnson, J., Stymiest, C., Rickertsen, J.R. 2004. Registration of 'horizon' proso millet. Crop Science. v. 44 p. 688. GREAT PLAINS SOIL QUALITY ASSESSMENT PROJECT: SOIL CHEMICAL PROPERTIES-(Abstract Only) Mikha, M.M., Vigil, M.F., Liebig, M.A., Wienhold, B.J., Bowman, R.A., Mcconkey, B., Deibert, E., Pikul Jr, J.L. 2003. Great plains soil quality assessment project: soil chemical properties. Meeting Abstract. Presented at the Dynamic Cropping Systems Meeting Aug. 4-7, 2003. Bismarck, ND. GREAT PLAINS SOIL QUALITY ASSESSMENT PROJECT: LOCATIONS AND CROPPING SYSTEMS-(Abstract Only) VARVEL, G.E., RIEDELL, W.E., TANAKA, D.L., VIGIL, M.F., SCHWARTZ, R.C., DEIBERT, E., MCCONKEY, B. 2003. GREAT PLAINS SOIL QUALITY ASSESSMENT PROJECT: LOCATIONS AND CROPPING SYSTEMS. AGRONOMY ABSTRACTS #872941. GREAT PLAINS SOIL QUALITY ASSESSMENT PROJECT: SOIL CHEMICAL PROPERTIES-(Abstract Only) Mikha, M.M., Vigil, M.F., Liebig, M.A., Wienhold, B.J., Bowman, R.A., Mcconkey, B., Deibert, E., Pikul Jr, J.L. 2004. Great plains soil quality assessment project: soil chemical properties. Agronomy Abstracts. Presented at the Annual American Society of Agronomy Meeting (ASA), November 2003. Denver, Colo. CROPPING SYSTEM EFFECTS ON SOIL QUALITY IN THE GREAT PLAINS-(Abstract Only) Wienhold, B.J., Pikul Jr, J.L., Liebig, M.A., Vigil, M.F., Varvel, G.E., Doran, J.W., Andrews, S.S. 2003. Cropping system effects on soil quality in the Great Plains. Abstract 478851. ASA Abstracts. CDROM FEASIBILITY OF SITE-SPECIFIC MANAGEMENT OF CORN HYBRIDS AND PLANT DENSITIES IN THE GREAT PLAINS-(Peer Reviewed Journal) Shanahan, J. F., Doerge, T.A., Johnson, J. J., and Vigil M.F. 2004. Feasibility of site-specific management of corn hybrids and plant densities in the Great Plains. Journal of Precision Agriculture 5:207-225. CROPPING SYSTEM EFFECTS ON SOIL QUALITY IN THE GREAT PLAINS: SUMMARY FROM A REGIONAL PROJECT-(Proceedings) WIENHOLD, B.J., PIKUL JR, J.L., LIEBIG, M.A., VIGIL, M.F., VARVEL, G.E., DORAN, J.W. CROPPING SYSTEM EFFECTS ON SOIL QUALITY IN THE GREAT PLAINS: SUMMARY FROM A REGIONAL PROJECT. Proceedings from Dynamic Cropping Systems: Prinicples, Processes, and Challenges. PP 215-219. 2003. MANAGING SOIL FERTILITY IN DIVERSE DRYLAND CROPPING SYSTEMS-(Proceedings) WESTFALL, D.G., VIGIL, M.F., PETERSON, G.A. MANAGING SOIL FERTILITY IN DIVERSE DRYLAND CROPPING SYSTEMS. Proceedings from Dynamic Cropping Systems: Prinicples, Processes, and Challenges. 2003. p. 29-36. Aug. 4-7, 2003, Bismarck, ND. ASSESSMENT OF CROPPING SYSTEM EFFECTS ON SOIL QUALITY IN THE GREAT PLAINS: INTRODUCTION-(Proceedings) VARVEL, G.E., RIEDELL, W.E., DEIBERT, E., MCCONKEY, B., TANAKA, D.L., VIGIL, M.F., SCHWARTZ, R.C. ASSESSMENT OF CROPPING SYSTEM EFFECTS ON SOIL QUALITY IN THE GREAT PLAINS: INTRODUCTION. Proceedings from Dynamic Cropping Systems: Prinicples, Processes, and Challenges. pp. 197-204. 2003. NITROGEN RESPONSE OF SUNFLOWERS IN A FOUR YEAR DRYLAND ROTATION-(Abstract Only) VIGIL, M.F., BENJAMIN, J.G. NITROGEN RESPONSE OF SUNFLOWERS IN A FOUR YEAR DRYLAND ROTATION. AGRONOMY ABSTRACTS. Presented at the National American Society of Agronomy Meeting, Oct. 2002. Indianapolis, IN. IMPACT OF MANURE CHARACTERISTICS AND MANAGEMENT ON NITROGEN MINERALIZATION-(Proceedings) DAVIS, J.G., VIGIL, M.F., JAKUBOWSKI, B.R., SMITH, G.M. IMPACT OF MANURE CHARACTERISTICS AND MANAGEMENT ON NITROGEN MINERALIZATION. WESTERN NUTRIENT MANAGEMENT CONFERENCE PROCEEDINGS. 2003. v. 5. p. 29-33. FATE AND TRANSFORMATION OF FERTILIZERS IN SOILS-(Proceedings) Vigil, M.F. 2004. Fate and transformation of fertilizers in soils. Presented at the 15th Annual Winter Conference of the Colorado Conservation Tillage Association (The High Plains No-till Conference) Feb. 4-5, Greeley, Colorado. p. F1-F6. LEGUME GREEN FALLOW EFFECT ON SOIL WATER AT WHEAT PLANTING AND WHEAT YIELD-(Abstract Only) NIELSEN, D.C., VIGIL, M.F. LEGUME GREEN FALLOW EFFECT ON SOIL WATER AT WHEAT PLANTING AND WHEAT YIELD. AGRONOMY ABSTRACTS. 2002. ACCOUNTING FOR SEASONAL NITROGEN MINERALIZATION: A REVIEW-(Peer Reviewed Journal) VIGIL, M.F., EGHBALL, B., CABRERA, M.L., JAKUBOWSKI, B.R., DAVIS, J.G. ACCOUNTING FOR SEASONAL NITROGEN MINERALIZATION: A REVIEW. JOURNAL OF SOIL AND WATER CONSERVATION SOCIETY. 2002. v. 94. p. 464-469. NUTRIENT VARIABILITY IN MANURES: IMPLICATIONS FOR SAMPLING AND REGIONAL DATABASE CREATION-(Peer Reviewed Journal) DAVIS, J.G., IVERSEN, K.V., VIGIL, M.F. NUTRIENT VARIABILITY IN MANURES: IMPLICATIONS FOR SAMPLING AND REGIONAL DATABASE CREATION. JOURNAL OF SOIL AND WATER CONSERVATION. 2002. v. 57 p. 473-478. GPFARM CYCLING OF CROP RESIDUES-(Abstract Only) Shaffer, M.J., Bartling, P.N., Vigil, M.F., Mcmaster, G.S., Dunn, G.H., Ascough Ii, J.C., Ahuja, L.R. 2002. Gpfarm cycling of crop residues. American Society of Agronomy Meetings. Indianapolis, IN. November 10-14, 2002. Gaseous losses of nitrogen other than through denitrification-() Francis, D.D., Vigil, M.F., Moiser, A.R. 2008. Gaseous losses of nitrogen other than through denitrification. In: J.S. Schepers and W.R. Raun, editors. Nitrogen in Agricultural Systems. Agronomy Monograph 49. Madison, WI: American Society of Agronomy. p. 255-279. QUANTIFYING EFFECTS OF SOIL CONDITIONS ON PLANT GROWTH AND CROP PRODUCTION-(Peer Reviewed Journal) BENJAMIN, J.G., NIELSEN, D.C., VIGIL, M.F., BOWMAN, R.A. QUANTIFYING EFFECTS OF SOIL CONDITIONS ON PLANT GROWTH AND CROP PRODUCTION. GEODERMA. 2003. v. 116 p. 137-148. INFLUENCE OF ROTATION ON PLANTING SOIL WATER CONTENT AND YIELD OF WINTER WHEAT-(Peer Reviewed Journal) NIELSEN, D.C., VIGIL, M.F., ANDERSON, R.L., BOWMAN, R.A., BENJAMIN, J.G., HALVORSON, A.D. INFLUENCE OF ROTATION ON PLANTING SOIL WATER CONTENT AND YIELD OF WINTER WHEAT. AGRONOMY JOURNAL. 2002. v. 94 p. 962-967. SOIL TESTING AND ANALYSES FOR DIFFERENT PHOSPHORUS POOLS-(Peer Reviewed Journal) BOWMAN, R.A., VIGIL, M.F. SOIL TESTING AND ANALYSES FOR DIFFERENT PHOSPHORUS POOLS. JOURNAL OF SOIL AND WATER CONSERVATION. 2002. v. 57. p. 479-485. NITROGEN USE AND CARBON SEQUESTERED BY CORN ROTATIONS IN THE NORTHERN CORN BELT, USA-(Proceedings) Pikul Jr, J.L., Schumacher, T.E., Vigil, M.F. 2002. Nitrogen use and carbon sequestered by corn rotations in the northern corn belt, usa. International Nitrogen Conference. NITROGEN USE AND CARBON SEQUESTERED BY CORN ROTATIONS IN THE NORTHERN CORN BELT, U.S.-() Pikul Jr, J.L., Schumacher, T.E., Vigil, M.F. 2002. Nitrogen use and carbon sequestered by corn rotations in the northern corn belt, U.S. Galloway, J., E. Cowling, J.W. Erisman, J. Wisniewski, C. Jordan. Editors. A.A. Balkema Publishers, Lisse, The Netherlands. Optimizing Nitrogen Management in Food and Energy Production and Environmental Protection, pp. 707-713. QUANTIFYING EFFECTS OF SOIL PHYSICAL CONDITION ON PLANT GROWTH AND CROP PRODUCTION-(Abstract Only) CROP ROTATION EFFECT ON WATER CONTENT AT WHEAT PLANTING AND WHEAT YIELD-(Abstract Only) ACCOUNTING FOR N MINERALIZATION: A REVIEW-(Abstract Only) FERTILIZER NITROGEN RECOVERY AND YIELD RESPONSE TO NITROGEN BY DRYLAND SUNFLOWERS IN A NO-TILL DRYLAND ROTATION-(Proceedings) CROP YIELD AND SOIL CONDITION UNDER RIDGE AND CHISEL-PLOT TILLAGE IN THE NORTHERN CORN BELT, USA-(Peer Reviewed Journal) Pikul Jr, J.L., Carpenter Boggs, L.A., Vigil, M.F., Schumacher, T.E., Lindstrom, M.J., Riedell, W.E. 2001. Crop yield and soil condition under ridge and chisel-plot tillage in the northern Corn Belt, USA. Soil & Tillage Research 60:21-33. NITROGEN MICRONUTRIENT AND ROW SPACING RESPONSE OF SUNFLOWERS-(Proceedings) MANURE P SORPTION AND RELEASE IN SEMIARID SOILS-(Proceedings) ECONOMIC ANALYSIS OF NITROGEN STARTER FERTILIZER AND ROTATION EFFECTS ON SOYBEAN QUALITY-(Abstract Only) IN-SITU NITROGEN MINERALIZATION OF MANURE AMENDED SOIL-(Proceedings) SULFUR AND MICRONUTRIENT CHANGES AS A FUNCTION OF DRYLAND CROPPING INTENSITY-(Proceedings) PHOSPHORUS: WHAT HAPPENS IN THE SOIL?-(Proceedings) LEGUMES IN WINTER WHEAT ROTATIONS-() WINTER WHEAT AND PROSO MILLET YIELD REDUCTION DUE TO SUNFLOWER IN ROTATION-(Abstract Only) NITROGEN DYNAMICS IN WINTER WHEAT-LEGUME GREEN FALLOW-(Abstract Only) ADSORPTION, MOVEMENT, AND TRANSFORMATIONS OF ORGANIC P IN SOILS-(Abstract Only) COVER CROP EFFECTS ON SOIL WATER RELATIONSHIPS-()
