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United States Department of Agriculture

Agricultural Research Service

Research Project: ENHANCED MIDWESTERN CROPPING SYSTEMS FOR SUSTAINABILITY AND ENVIRONMENTAL QUALITY Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)

Evaluation of a model framework to estimate soil and soil organic carbon redistribution by water and tillage using 137Cs in two U.S Midwest agricultural fields - (Peer Reviewed Journal)
Young, C.J., Liu, S., Schumacher, J.A., Schumacher, T.E., Kaspar, T.C., McCarty, G.W., Napton, D., Jaynes, D.B. 2014. Evaluation of a model framework to estimate soil and soil organic carbon redistribution by water and tillage using 137Cs in two U.S Midwest agricultural fields. Geoderma. 232:437-448. Available at: http://www.sciencedirect.com/science/journal/00167061/232.
Rye cover crop effects on soil quality in no-till corn silage-soybean cropping systems - (Peer Reviewed Journal)
Moore, E.B., Kaspar, T.C., Wiedenhoeft, M.H., Cambardella, C.A. 2014. Rye cover crop effects on soil quality in no-till corn silage-soybean cropping systems. Soil Science Society of America Journal. 78(3):968-976.
Cover crops in the upper Midwest USA: Potential adoption and reduction of nitrate leaching in the Mississippi River Basin - (Peer Reviewed Journal)
Kladivko, E.J., Kaspar, T.C., Jaynes, D.B., Malone, R.W., Singer, J., Morin, X.K., Searchinger, T. 2014. Cover crops in the upper Midwest USA: Potential adoption and reduction of nitrate leaching in the Mississippi River Basin. Journal of Soil and Water Conservation. 69(4):279-291.
Winter cover crop effect on corn seedling pathogens - (Abstract Only)
Schenck, L., Kaspar, T.C., Moorman, T.B., Bakker, M.G. 2013. Winter cover crop effect on corn seedling pathogens. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 3-6, 2013, Tampa, FL. Available: https://scisoc.confex.com/crops/2013am/webprogram/start.html.
The long-term agroecological research (LTAR) experiment in Iowa: Organic resilience in soil quality and profitability - (Abstract Only)
Cambardella, C.A. 2013. The long-term agroecological research (LTAR) experiment in Iowa: Organic resilience in soil quality and profitability. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 3-6, 2013, Tampa, FL.
Fluid fertilizer's role in sustaining soils used for bio-energy feedstock production - (Proceedings)
Kovar, J.L., Karlen, D.L. 2013. Fluid fertilizer's role in sustaining soils used for bio-energy feedstock production. In: Leikman, D.F., editor. Fluid Fertilizer Foundation Symposium Proceedings, February 18-20, 2013, Scottsdale, Arizona. Available: http://www.fluidfertilizer.com/Forum%.20Presentations/2013/Proceedings/Kovar%202013%20Proceedings.pdf.
Topographic and soil influences on root productivity of three bioenergy cropping systems - (Peer Reviewed Journal)
Ontl, T.A., Hofmockel, K.S., Cambardella, C.A., Schulte, L.A., Kolka, R.K. 2013. Topographic and soil influences on root productivity of three bioenergy cropping systems. New Phytologist. 199(3):727-737. DOI:10.1111/nph.12302.
Rye cover crop effects on soil properties in no-till corn silage/soybean agroecosystems - (Abstract Only)
Moore, E., Kaspar, T.C., Wiedenhoeft, M., Cambardella, C.A. 2012. Rye cover crop effects on soil properties in no-till corn silage/soybean agroecosystems. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 21-24, 2012, Cincinnati, OH. Available: https://www.acsmeetings.org/meetings.
Value of fluid fertilizer in bio-energy production - (Trade Journal)
Kovar, J.L., Karlen, D.L. 2012. Value of fluid fertilizer in bio-energy production. Fluid Journal. 20:6-9.
Dealing with drought: Securing nitrogen with cover crops - (Other)
Kaspar, T.C., Meisinger, J.J., Robison, D. 2012. Dealing with drought: Securing nitrogen with cover crops. World Wide Web. Available: http://www.croplife.com/webinars.
The long-term agroecological research (LTAR) experiment supports organic yields, soil quality, and economic performance in Iowa - (Peer Reviewed Journal)
Delate, K., Cambardella, C.A., Chase, C., Johanns, A., Turnbull, R. 2013. The long-term agroecological research (LTAR) experiment supports organic yields, soil quality, and economic performance in Iowa. Crop Management. DOI:10.1094/CM-2013-0429-02-RS.
Organic vegetable research: Twenty years of progress - (Abstract Only)
Delate, K., Cambardella, C.A. 2012. Organic vegetable research: Twenty years of progress. American Society of Horticulture Science Meeting. 47(9):S78 HortScience Supp.
Modeling phosphorus capture by plants growing in a multi-species riparian buffer - (Peer Reviewed Journal)
Kelly, J., Kovar, J.L. 2012. Modeling phosphorus capture by plants growing in a multi-species riparian buffer. Applied and Environmental Soil Science. DOI:10.1155/2012/838254.
Quantifying the linkages among soil health, organic farming, and food - (Abstract Only)
Cambardella, C.A. 2012. Quantifying the linkages among soil health, organic farming, and food. American Society of Agronomy Annual Meetings [abstracts], Oct. 21-24, 2012, Cincinnati, OH. CD-ROM.
Organic no-till production for grain crops in Iowa: Effects on crop productivity and soil quality - (Abstract Only)
Delate, K., Cambardella, C.A. 2012. Organic no-till production for grain crops in Iowa: Effects on crop productivity and soil quality. American Society of Agronomy Annual Meetings [abstracts], Oct. 21-24, 2012, Cincinnati, OH. CD-ROM.
The role of precision agriculture in food production and security - (Book / Chapter)
(10-May-12)
Fluid fertilizer's role in sustaining soils used for bio-energy feedstock production - (Proceedings)
Kovar, J.L., Karlen, D.L. 2012. Fluid fertilizer's role in sustaining soils used for bio-energy feedstock production. In: Leikam, D.F., editor. Proceedings of the Fluid Fertilizer Foundation Symposium, February 19-21, 2012, Scottsdale, AZ. 29:1-9. Available: http://www.fluidfertilizer.com/fertilizer_forum_proceedings2012.html.
Synchrony of net nitrogen mineralization and maize nitrogen uptake following applications of composted and fresh swine manure in the Midwest U.S. - (Peer Reviewed Journal)
Loecke, T.D., Cambardella, C.A., Liebman, M. 2012. Synchrony of net nitrogen mineralization and maize nitrogen uptake following applications of composted and fresh swine manure in the Midwest U.S. Nutrient Cycling in Agroecosystems. 93:65–74. DOI:10.1007/s10705-012-9500-6.
Stream bank erosion as a source of sediment and phosphorus in grazed pastures of the Rathbun Lake Watershed in southern Iowa, USA - (Peer Reviewed Journal)
Tufekcioglu, M., Isenhart, T.M., Schultz, R.C., Bear, D.A., Kovar, J.L., Russell, J.R. 2012. Stream bank erosion as a source of sediment and phosphorus in grazed pastures of the Rathbun Lake Watershed in southern Iowa, USA. Journal of Soil and Water Conservation. 67(6):545-555.
Don't overlook sulfur in crop management - (Trade Journal)
Grant, C.A., Kovar, J.L. 2012. Don't overlook sulfur in crop management. Fluid Journal. 20(2). Available: http://www.fluidjournalonline.com/?iid=59118.
Soil carbon sequestration in central USA agroecosystems - (Book / Chapter)
Cambardella, C.A., Johnson, J.M., Varvel, G.E. 2012. Soil carbon sequestration in central USA agroecosystems. In Liebig, M.A., Franzluebbers, A.J., Follett, R.F., editors. Managing Agricultural Greenhouse Gases: Coordinated Agricultural Research through GRACEnet to Address our Changing Climate. San Diego, CA: Elsevier Publ. p. 41-58.
Stocking rate and riparian vegetation effects on physical characteristics of riparian zones of midwestern pastures - (Peer Reviewed Journal)
Bear, D.A., Russell, J.R., Tufekcioglu, M., Isenhart, T.M., Morrical, D.G., Kovar, J.L. 2011. Stocking rate and riparian vegetation effects on physical characteristics of riparian zones of midwestern pastures. Rangeland Ecology and Management. 65:119-128.
Water and salt extractable organic matter as affected by soil depth and tillage system - (Abstract Only)
Toosi, E.R., Castellano, M.J., Mitchell, D., Singer, J.W. 2011. Water and salt extractable organic matter as affected by soil depth and tillage system. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
Organic farming: Impacts on soil, food, and human health - (Book / Chapter)
Carr, P.M., Delate, K., Zhao, X., Cambardella, C.A., Carr, P.L., Heckman, J.R. 2012. Organic farming: Impacts on soil, food, and human health. In: Brevik, E.C., Burgess, L., editors. Soils and Human Health. New York, NY: Taylor & Francis. p. 241-254.
Nitrogen, phosphorus, and potassium requirements to support a multi-billion gallon biofuel industry - (Book / Chapter)
Murrell, T., Fixen, P.E., Huang, W., Kovar, J.L., White Jr, P.M. 2011. Nitrogen, phosphorus, and potassium requirements to support a multi-billion gallon biofuel industry. In: Braun, R., Karlen, D., and Johnson D., (ed.). Sustainable Alternative Fuel Feedstock Opportunities, Challenges and Roadmaps for Six U.S. Regions. Ankeny, IA: Soil and Water Conservation Society. p. 160-176. Available: http://www.swcs.org/documents/resources/Chapter_10__Murrell__Billion_Ton_Re_8B308171BD289.pdf.
Maize water use in living mulch systems with stover removal - (Peer Reviewed Journal)
Wiggans, D.R., Singer, J.W., Moore, K.J., Lamkey, K.R. 2011. Maize water use in living mulch systems with stover removal. Crop Science. 52:327-338.
Winter wheat/red clover intercrop response to tillage and compost amendment - (Peer Reviewed Journal)
Blaser, B.C., Singer, J.W., Gibson, L.R. 2011. Winter wheat/red clover intercrop response to tillage and compost amendment. Crop Science. 52:320-326.
Use of legume manures as nitrogen sources for corn production - (Peer Reviewed Journal)
Liebman, M., Graef, R., Nettleton, D., Cambardella, C.A. 2011. Use of legume manures as nitrogen sources for corn production. Renewable Agriculture and Food Systems. p. 1-12. Available: http://dx.doi.org/10.1017/S1742170511000299.
Carbon dynamics in agricultural systems - (Book / Chapter)
Cambardella, C.A., Hatfield, J.L. 2013. Carbon dynamics in agricultural systems. In: Brown, D.G., French, N.H.F., Reed, B.C., Robinson, D.T., editors. Soil Carbon Dynamics in Agricultural Systems. New York, NY: Cambridge University Press. p. 381-402.
Cover crop effects on nitrogen load in tile drainage from Walnut Creek Iowa using root zone water quality model (RZWQM) - (Peer Reviewed Journal)
Singer, J.W., Malone, R.W., Jaynes, D.B., Ma, L. 2011. Cover crop effects on nitrogen load in tile drainage from Walnut Creek, Iowa, using root zone water quality model (RZWQM). Agricultural Water Management. 98(10):1622-1628.
Winter cereal canopy effect on cereal and interseeded legume productivity - (Peer Reviewed Journal)
Blaser, B.C., Singer, J.W., Gibson, L.R. 2011. Winter cereal canopy effect on cereal and interseeded legume productivity. Agronomy Journal. 103(4):1180-1185.
Grazing management effects on sediment, phosphorus, and pathogen loading of streams in cool-season grass pastures - (Peer Reviewed Journal)
Schwarte, K.A., Russell, J.R., Kovar, J.L., Morrical, D.G., Ensley, S.M., Yoon, K., Cornick, N.A., Cho, Y. 2011. Grazing management effects on sediment, phosphorus, and pathogen loading of streams in cool-season grass pastures. Journal of Environmental Quality. 40:1303-1313.
Minimizing interspecific competition in soybean by optimizing cover crop self-seeding - (Peer Reviewed Journal)
Singer, J.W., Kohler, K.A., Meek, D.W. 2011. Minimizing interspecific competition in soybean by optimizing cover crop self-seeding. Agronomy Journal. 103(4):1186-1191.
Fluid fertilizer's role in sustaining soils used for bio-energy feedstock production - (Proceedings)
Kovar, J.L., Karlen, D.L. 2011. Fluid fertilizer's role in sustaining soils used for bio-energy feedstock production. In: Leikam, D.F. (ed). Fluid Fertilizer Foundation Symposium Proceedings. Fluid Fertilizer Forum, Feb. 20-22, 2011, Scottsdale, AZ. Volume 28. Available: http://www.fluidfertilizer.com/fertilizer_forum_proceedings2011.html.
Nutrient cyling in soils: Sulfur - (Book / Chapter)
Kovar, J.L., Grant, C.A. 2011. Nutrient cyling in soils: Sulfur. In: Hatfield, J.L., Sauer, T.J., editors. Soil Management: Building a Stable Base for Agriculture. Madison, WI: American Society of Agronomy and Soil Science Society of America. p. 103-115.
Grazing management effects on sediment, phosphorus, and pathogen loading of pasture streams - (Experiment Station)
Schwarte, K.A., Russell, J.R., Kovar, J.L., Morrical, D.G., Ensley, S.M., Yoon, K., Cornick, N.A., Cho, Y. 2011. Grazing management effects on sediment, phosphorus, and pathogen loading of pasture streams. Iowa State University Animal Industry Report. Report R2614.
Grazing management effects on stream bank erosion and phosphorus delivery to a pasture stream - (Peer Reviewed Journal)
Nellesen, S.L., Kovar, J.L., Haan, M.M., Russell, J.R. 2011. Grazing management effects on stream bank erosion and phosphorus delivery to a pasture stream. Canadian Journal of Soil Science. 91:385-395.
Sorption indices to estimate risk of soil phosphorus loss in the Rathbun Lake Watershed, Iowa - (Peer Reviewed Journal)
Hongthanat, N., Kovar, J.L., Thompson, M.L. 2011. Sorption indices to estimate risk of soil phosphorus loss in the Rathbun Lake watershed, Iowa. Soil Science. 176:237-244.
Estimating soil organic carbon using aerial imagery and soil surveys - (Peer Reviewed Journal)
Gelder, B.K., Anex, R.P., Kaspar, T.C., Sauer, T.J., Karlen, D.L. 2011. Estimating soil organic carbon using aerial imagery and soil surveys. Soil Science Society of America Journal. 75:1821-1828.
How does fertilizer/manure placement affect P and K availability in the root zone? - (Proceedings)
Kovar, J.L. 2010. How does fertilizer/manure placement affect P and K availability in the root zone? In: Vyn, T. (ed.). Indiana Certified Crop Advisors Conference Proc., December 14-15, 2010, Indianapolis, IN. CDROM.
Soil, water, and greenhouse-gas impacts of alternative biomass cropping systems - (Abstract Only)
Schulte Moore, L., Back, E., Cambardella, C.A., Hargreaves, S., Helmers, M., Hofmockel, K., Isenhart, T., Kolka, R., Ontl, T., Walsh, W., Williams, R. 2010. Soil, water, and greenhouse-gas impacts of alternative biomass cropping systems [abstract]. American Geophysical Union. San Francisco, CA, December 13-17, 2010. Abstract B22D-04.
Variability of light interception and radiation use efficiency in maize and soybean - (Peer Reviewed Journal)
Singer, J.W., Meek, D.W., Sauer, T.J., Prueger, J.H., Hatfield, J.L. 2011. Variability of light interception and radiation use efficiency in maize and soybean. Field Crops Research. 121(1):147-152.
Under Cover: Secrets to Using Companion Crops in Establishment of M. x Giganteus - (Abstract Only)
Heaton, E., Singer, J.W., Cruse, R., Davenport, D. 2010. Under Cover: Secrets to Using Companion Crops in Establishment of M. x Giganteus [abstracts]. ASA-CSSA-SSSA Annual Meeting, Oct. 31 - Nov. 4, 2010, Long Beach, CA. CD-ROM.
Tillage and Composting Strategies to Maximize Potentially Mineralizable Nitrogen in Maize-based Cropping Systems - (Abstract Only)
(02-Oct-10)
Two EDF graphs for assessing agreement between paired data - (Proceedings)
Meek, D.W. 2010. Two EDF graphs for assessing agreement between paired data. In: Kiss, M. (ed.), Reporting and Visualization, Midwest SAS Users Group Annual Conf. Proc., Oct. 10-12, 2010, Milwaukee, WI. Paper No. 43.
Swine manure injection with a low-disturbance applicator and cover crops reduce phosphorus losses in runoff - (Peer Reviewed Journal)
Kovar, J.L., Moorman, T.B., Singer, J.W., Cambardella, C.A., Tomer, M.D. 2011. Swine manure injection with a low-disturbance applicator and cover crops reduce phosphorus losses in runoff. Journal of Environmental Quality. 40:329-336.
Contrasting methods for estimating evapotranspiration in soybean - (Peer Reviewed Journal)
Singer, J.W., Heitman, J.L., Hernandez Ramirez, G., Sauer, T.J., Prueger, J.H., Hatfield, J.L. 2010. Contrasting methods for estimating evapotranspiration in soybean. Agricultural Water Management. 98(1):157-163.
US Policy approaches for assessing soil health - (Proceedings)
Andrews, S.S., Wander, M.M., Widman, N., Cambardella, C.A., Mitchell, J.P. 2010. US Policy approaches for assessing soil health. In: Gilkes, R.J. and Prakongkep, N., editors. Proceedings of the 19th World Congress of Soil Science, Aug. 6-10, 2010, Brisbane, Australia. DVD.
Managing Perennial Monocultures for Ecosystem Services - (Abstract Only)
Heaton, E., Singer, J.W., Dohleman, F., Long, S.P. 2010. Managing Perennial Monocultures for Ecosystem Services. Ecological Society of America Abstracts, Pittsburgh, PA, August 1-6, 2010. Session 00S 38-3.
Soybean Photosynthetic Rate and Carbon Fixation at Early and Late Planting Dates - (Peer Reviewed Journal)
De Bruin, J.L., Singer, J.W., Pedersen, P., Rotundo, J. 2010. Soybean Photosynthetic Rate and Carbon Fixation at Early and Late Planting Dates. Crop Science. 50(6):2516-2524.
Optimizing Nutrient Management for Sustainable Bio-energy Feedstock Production - (Trade Journal)
Kovar, J.L., Karlen, D.L. 2010. Optimizing Nutrient Management for Sustainable Bio-energy Feedstock Production. Fluid Journal. 18(3). Available: http://fluidjournal.org/1gsdgfs-S10/S10-A2.pdf
Soil Phosphorus Distribution in a Crop Production System with Long-term Compost Amendment - (Proceedings)
Bortolon, L., Kovar, J.L., Cambardella, C.A., Singer, J.W., Gianello, C. 2010. Soil Phosphorus Distribution in a Crop Production System with Long-term Compost Amendment. In: Gilkes, R.J. and Prakongkep, N. (ed). Proceedings of the 19th World Congress Soil Science, August 1-6, 2010, Brisbane, Australia. ISBN 978-0-646-53783-2. DVD.
Is Sulfur Limiting Maize Grown on Eroded Midwestern U.S. Soils? - (Proceedings)
Kovar, J.L., Karlen, D.L. 2010. Is Sulfur Limiting Maize Grown on Eroded Midwestern U.S. Soils? In: Gilkes, R.J. and Prakongkep, N. (ed). Proceedings of the 19th World Congress Soil Science, August 1-6, 2010, Brisbane, Australia. ISBN 978-0-646-53783-2. DVD.
Fluid Fertilizer's Role in Sustaining Soils Used for Bio-fuels Production - (Proceedings)
Kovar, J.L., Karlen, D.L. 2010. Fluid Fertilizer's Role in Sustaining Soils Used for Bio-fuels Production. In: Fluid Fertilizer Foundation Symposium Proceedings. Fluid Fertilizer Forum, Feb. 14-16, 2010, Scottsdale, AZ. 2010 CD-ROM, Volume 27.
Value of Using Different Vegetative Indices to Quantify Agricultural Crop Characteristics at Different Growth Stages under Varying Management Practices - (Peer Reviewed Journal)
Hatfield, J.L., Prueger, J.H. 2010. Value of Using Different Vegetative Indices to Quantify Agricultural Crop Characteristics at Different Growth Stages under Varying Management Practices. Remote Sensing. 2:562-578.
Root characteristics of two soybean cultivars grown in fumigated fields in Iowa - (Peer Reviewed Journal)
Murillo-Williams, A., Kaspar, T.C., Pedersen, P. 2010. Root characteristics of two soybean cultivars grown in fumigated fields in Iowa. Crop Science. 50:2037-2045.
Potassium Uptake Efficiency and Dynamics in the Rhizosphere of Maize, Wheat, and Sugar Beet Evaluated with a Mechanistic Model - (Peer Reviewed Journal)
Samal, D., Kovar, J.L., Steingrobe, B., Sadana, U.S., Bhadoria, P.S., Claassen, N. 2010. Potassium Uptake Efficiency and Dynamics in the Rhizosphere of Maize, Wheat, and Sugar Beet Evaluated with a Mechanistic Model. Plant and Soil Journal. 332:105-121.
Contrasting Methods for Measuring Evapotranspiration in Soybean - (Abstract Only)
Singer, J.W., Heitman, J.L., Hernandez Ramirez, G., Sauer, T.J., Prueger, J.H., Hatfield, J.L. 2009. Contrasting Methods for Measuring Evapotranspiration in Soybean [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 1-5, 2009, Pittsburgh, PA.
Cover Crop Biomass and Corn Yield Following 13 Rye, Wheat, and Triticale Cultivars Used as Winter Cover Crops - (Abstract Only)
Kaspar, T.C. 2009. Cover Crop Biomass and Corn Yield Following 13 Rye, Wheat, and Triticale Cultivars Used as Winter Cover Crops [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 1-5, 2009, Pittsburgh, PA.
Coupling Cover Crops with Alternative Swine Manure Application Strategies: Manure-15N Tracer Studies - (Abstract Only)
Cambardella, C.A., Moorman, T.B., Singer, J.W., Tomer, M.D., Kovar, J.L., Kerr, B.J. 2009. Coupling Cover Crops with Alternative Swine Manure Application Strategies: Manure-15N Tracer Studies [abstract]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 1-5, 2009, Pittsburgh, PA. Paper No. 555-77.
Photosynthetic Rate of Soybean at Various Planting Dates - (Abstract Only)
De Bruin, J.L., Singer, J.W., Pedersen, P. 2009. Photosynthetic Rate of Soybean at Various Planting Dates [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 1-5, 2009, Pittsburgh, PA.
Living Mulch Nutritive Value in a Corn-Soybean-Forage Rotation - (Peer Reviewed Journal)
Singer, J.W., Moore, K. 2009. Living Mulch Nutritive Value in a Corn-Soybean-Forage Rotation. Agronomy Journal. 102(1):282-288.
Seasonal Changes in Photosynthesis, Antioxidant Systems and ELIP Expression in a Thermonastic and Non-thermonastic Rhododendron Species: A Comparison of Photoprotective Strategies in Overwintering Plants - (Peer Reviewed Journal)
Wang, X., Peng, Y., Singer, J.W., Fessehaie, A., Krebs, S.L., Arora, R. 2009. Seasonal Changes in Photosynthesis, Antioxidant Systems and ELIP Expression in a Thermonastic and Non-thermonastic Rhododendron Species: A Comparison of Photoprotective Strategies in Overwintering Plants. Plant Science. 177:607-617.
Cover Crops and Manure: Two Is Better Than One - (Popular Publication)
Singer, J.W., Rector, N. 2010. Cover Crops and Manure: Two Is Better Than One. Hoard's Dairyman. p.527.
Crop Rotation in Row Crop Production Systems - (Popular Publication)
Singer, J.W., Bauer, P.J. 2009. Crop Rotation in Row Crop Production Systems. Popular Publication. Available: http://soilquality.org/practices/row_crop_rotations.html
Living Mulch Forage Yield and Botanical Composition in a Corn-Soybean-Forage Rotation - (Peer Reviewed Journal)
Singer, J.W., Kohler, K.A., Moore, K.J., Meek, D.W. 2009. Living Mulch Forage Yield and Botanical Composition in a Corn-Soybean-Forage Rotation. Agronomy Journal. 101(5):1249-1257.
Modern Statistical Graphs that Provide Insight in Research Results - (Abstract Only)
Meek, D.W. 2009. Modern Statistical Graphs that Provide Insight in Research Results [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. November 1-5, 2009, Pittsburgh, PA. CD-ROM.
Red clover interseeded into small grains makes cents - (Popular Publication)
Singer, J.W. 2009. Red clover interseeded into small grains makes cents. Popular Publication. The Practical Farmer. 24(1):17.
Last Modified: 11/22/2014
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