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United States Department of Agriculture

Agricultural Research Service

Related Topics

Thomas C Kaspar (Tom)
Agroecosystems Management Research
Plant Physiology

Phone: (515) 294-8873
Fax: (515) 294-8125
Room 238

2110 UNIVERSITY BOULEVARD
NLAE
AMES , IA 500113120
Projects
Cropping Systems for Enhanced Sustainability and Environmental Quality in the Upper Midwest
In-House Appropriated (D)
  Accession Number: 425501
Cover Crops Influence Nutrient Cycling, Yield, and Diseases of Corn and Soybean
Non-Funded Cooperative Agreement (N)
  Accession Number: 430154

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Long-term research and monitoring of conservation practice effects in Iowa watersheds -
Winter rye as a cover crop reduces nitrate loss to subsurface drainage as simulated by HERMES -
Malone, R.W., Kersebaum, K.C., Kaspar, T.C., Ma, L., Jaynes, D.B., Gillette, K.L. 2017. Winter rye as a cover crop reduces nitrate loss to subsurface drainage as simulated by HERMES. Agricultural Water Management. 184:p.156-69. doi:10.1016/j.agwat.2017.01.016
Impact of broadcasting a cereal rye or oat cover crop before corn and soybean harvest on nitrate leaching -
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B. 2016. Impact of broadcasting a cereal rye or oat cover crop before corn and soybean harvest on nitrate. In: Proceedings of ASA-CSSA-SSSA Annual Meeting, November 6-9, 2016, Phoenix, Arizona. Available: https://scisco.confex.com/scisoc/2016am/webprogram/Paper99705.html.
Isolation of cultivation-resistant oomycetes, first detected as amplicon sequences, from roots of herbicide-terminated winter rye -
Bakker, M.G., Moorman, T.B., Kaspar, T.C., Manter, D.K. 2017. Isolation of cultivation-resistant oomycetes, first detected as amplicon sequences, from roots of herbicide-terminated winter rye. Phytobiomes Journal. 1, 24-35. doi: 10.1094/PBIOMES-10-16-0011-R
A long term study of nitrous oxide emissions from a corn-soybean rotation in central Iowa: I. cumulative emissions -
Parkin, T.B., Kaspar, T.C., Jaynes, D.B., Moorman, T.B. 2016. A long term study of nitrous oxide emissions from a corn-soybean rotation in central Iowa: I. cumulative emissions. Soil Science Society of America Journal. 80:1551-1559.
Study of the influence of winter rye on soybean seedling and root rot diseases -
Araldi Da Silva, G., Kaspar, T.C., Helmers, M., Mueller, D., Leandro, L. 2016. Study of the influence of winter rye on soybean seedling and root rot diseases. In: Proceedings of American Pathological Society North Central Division Annual Meeting, June 7-9, 2016, Roseville, MN.
Soil water improvements with the long-term use of a winter rye cover crop -
Basche, A.D., Kaspar, T.C., Archontoulis, S., Jaynes, D.B., Sauer, T.J., Parkin, T.B., Miguez, F. 2016. Soil water improvements with the long-term use of a winter rye cover crop. Agricultural Water Management. 172:40-50. doi: 10.1016/j.agwat.2016.04.006.
The potential for cereal rye cover crops to host corn seedling pathogens -
Bakker, M.G., Acharya, J., Moorman, T.B., Robertson, A., Kaspar, T.C. 2016. The potential for cereal rye cover crops to host corn seedling pathogens. Phytopathology. 106:591-601.
Time interval between cover crop termination and planting influences corn seedling disease, plant growth, and yield -
Acharya, J., Bakker, M.G., Moorman, T.B., Kaspar, T.C., Lenssen, A.W., Robertson, A.E. 2017. Time interval between cover crop termination and planting influences corn seedling disease, plant growth, and yield. Plant Disease. 101(4):591-600. doi: 10.1094/PDIS-07-16-0975-RE
Simulating woodchip bioreactor performance using a dual-porosity model -
Jaynes, D.B., Moorman, T.B., Parkin, T.B., Kaspar, T.C. 2016. Simulating woodchip bioreactor performance using a dual-porosity model. Journal of Environmental Quality. 45(3):830-838. doi: 10.2134/jeq2015.07.0342.
Effect of length of interval between cereal rye cover crop termination and corn planting on seedling root disease and corn growth -
Kaspar, T.C., Acharya, J., Robertson, A., Bakker, M.G., Lenssen, A., Moorman, T.B. 2015. Effect of length of interval between cereal rye cover crop termination and corn planting on seedling root disease and corn growth. In: Proceedings of ASA-CSSA-SSSA Annual Meeting, November 15-18, 2015, Minneapolis, Minnesota. Poster No. 502. Available: https://scisoc.confex.com/scisoc/2015am/webprogram/Paper92188.html.
Cover crop options and mixes for the upper midwest -
Appelgate, S.R., Lenssen, A.W., Wiedenhoeft, M.H., Kaspar, T.C. 2015. Cover crop options and mixes for the upper midwest. In: Proceedings of ASA-CSSA-SSSA Annual Meeting, November 2-5, 2014, Long Beach, California. Available: https://scisoc.confex.com/scisoc/2014am/webprogram/Paper92543.html.
Simulating long-term impacts of cover crops and climate change on crop production and environmental outcomes in the midwestern United States -
Basche, A.D., Archontoulis, S., Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Miguez, F. 2016. Simulating long-term impacts of cover crops and climate change on crop production and environmental outcomes in the midwestern United States. Agriculture, Ecosystems and Environment. 218:95-106. doi: 10.1016/j.agee.2015.11.011.
Seeding date affects fall growth of winter canola (Brassica napus L. ‘Baldur’) and its performance as a winter cover crop in central Iowa -
Martinez-Feria, R., Kaspar, T.C., Wiedenhoeft, M.H. 2016. Seeding date affects fall growth of winter canola (Brassica napus L. ‘Baldur’) and its performance as a winter cover crop in central Iowa. Crop, Forage & Turfgrass Management. 2(1). doi: 10.2134/cftm2015.0181.
Cover crops in vegetable production systems -
Nair, A., Kaspar, T.C. 2015. Cover crops in vegetable production systems. Extension Publications. HORT 3026. Iowa State University Extension and Outreach.
Winter rye cover crops as a host for corn seedling pathogens -
Bakker, M.G., Moorman, T.B., Kaspar, T.C., Manter, D.K. 2016. Winter rye cover crops as a host for corn seedling pathogens. American Phytopathological Society. 106:S1.2. doi: 10.1094/PHYTO-106-1-s1.1
Effect of date of termination of a winter cereal rye cover crop (Secale cereale) on corn seedling disease -
Acharya, J., Bakker, M.G., Kaspar, T.C., Moorman, T.B., Lenssen, A., Robertson, A. 2016. Effect of date of termination of a winter cereal rye cover crop (Secale cereale) on corn seedling disease. American Phytopathological Society Annual Meeting. 106:S1.1.
Soil water improvements with the long-term use of a winter rye cover crop -
Basche, A.D., Kaspar, T.C., Archontoulis, S., Jaynes, D.B., Parkin, T.B., Sauer, T.J., Miguez, F. 2015. Soil water improvements with the long-term use of a winter rye cover crop. In: Proceedings of American Geophysical Union 2015 Fall Meeting, December 14-18, 2016, San Francisco, CA.
Biomass production of 12 winter cereal cover crop cultivars and their effect on subsequent no-till corn yield -
Kaspar, T.C., Bakker, M.G. 2015. Biomass production of 12 winter cereal cover crop cultivars and their effect on subsequent no-till corn yield. Journal of Soil and Water Conservation. 70(6):142A-154A. doi: 10.2489/jswc.70.6.142A.
Winter rye cover crop effect on corn seedling pathogens -
Schenck, L., Kaspar, T.C., Moorman, T.B., Bakker, M.G., Loynachan, T.E. 2014. Winter rye cover crop effect on corn seedling pathogens. In: Proceedings of ASA-CSSA-SSSA Annual Meeting, November 2-11, 2014, Long Beach, California. 388-12:500. Available: https://scisoc.confex.com/scisoc/2014am/webprogram/Paper86203.html.
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 Reprint Icon -
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 -
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. DOI: 10.2136/sssaj2013.09.0401.
Cover crops in the upper midwestern United States: Potential adoption and reduction of nitrate leaching in the Mississippi River Basin -
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 midwestern United States: Potential adoption and reduction of nitrate leaching in the Mississippi River Basin. Journal of Soil and Water Conservation. 69(4):279-291. DOI: 10.2489/jswc.69.4.279.
Modeling the long-term effect of winter cover crops on nitrate transport in artificially drained fields across the Midwest U.S. -
Cover crops in the upper midwestern United States: Simulated effect on nitrate leaching with artificial drainage -
Malone, R.W., Jaynes, D.B., Kaspar, T.C., Thorp, K.R., Kladivko, E.J., Ma, L., James, D.E., Singer, J.W., Morin, X.K., Searchinger, T.D. 2014. Cover crops in the upper midwestern United States: Simulated effect on nitrate leaching with artificial drainage. Journal of Soil and Water Conservation. 69:292-305.
Do cover crops increase or decrease nitrous oxide emissions? A meta-analysis -
Basche, A.D., Miguez, F.E., Kaspar, T.C., Castellano, M.J. 2014. Do cover crops increase or decrease nitrous oxide emissions? A meta-analysis. Journal of Soil and Water Conservation. 69:471-482.
Nitrous oxide emissions from intensively managed agroecosystems: The role of carbon inputs -
Castellano, M.J., Basche, A., Iqball, J., Kaspar, T.C., Miguez, F., Mitchell, D.C., Parkin, T.B. 2013. Nitrous oxide emissions from intensively managed agroecosystems: The role of carbon inputs. American Geophysical Union Meeting Abstract Database. Available at: http://abstractsearch.agu.org/meetings/2013/FM/sections/B/sessions/B14C/abstracts/B14C-01.html.
Rye cover crop effects on nitrous oxide emissions from a corn-soybean system -
Parkin, T.B., Kaspar, T.C., Jaynes, D.B., Moorman, T.B. 2013. Rye cover crop effects on nitrous oxide emissions from a corn-soybean system [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts, November 3-6, 2013, Tampa, FL.
Winter cover crop effect on corn seedling pathogens -
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.
Rye cover crop effects on soil properties in no-till corn silage/soybean agroecosystems -
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.
Dealing with drought: Securing nitrogen with cover crops -
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.
Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water -
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B., Singer, J.W. 2012. Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water. Agricultural Water Management. 110:25-33. DOI:10.1016/j.agwat.2012.03.010.
Midwest Cover Crops Field Guide -
Fisher, B., Gerber, C., Johnson, K., Kladivko, E., Nice, G., Robison, D., Kaspar, T.C., Ackroyd, V.J., Baas, D.G., Bird, G.W., Brainard, D.C., Goldy, R.G., Harrigan, T.M., Hausbeck, M.K., Mutch, D.R., Ngouajio, M., Renner, K., Sprague, C., Taylor, E., Hoorman, J.J., Islam, R., Petrosino, J., Reeder, R., Sundermeier, A., Young, C., Brown, C., Callow, K., Celetti, M., Robinson, D., Tenuta, A., Van Eerd, L., Verhallen, A., Albrecht, K. 2012. Midwest Cover Crops Field Guide. p. 136. Available: http://www3.ag.purdue.edu/agry/dtc/Pages/CoverCropsFG.aspx.
Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water -
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B., Singer, J.W. 2011. Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
Rye cover crop effects on soil properties in no-till corn silage/soybean agroecosystems -
Moore, E., Kaspar, T.C., Wiedenhoeft, M. 2011. 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. 16-19, 2011, San Antonio, TX. CD-ROM.
Quantities and qualities of physical and chemical fractions of soil organic matter under a rye cover crop -
Olk, D.C., Cambardella, C.A., Kaspar, T.C. 2011. Quantities and qualities of physical and chemical fractions of soil organic matter under a rye cover crop. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 16-19, 2011, San Antonio, TX. CD-ROM.
Soil CO2 flux in response to wheel traffic in a no-till system -
Kaspar, T.C., Parkin, T.B. 2011. Soil CO2 flux in response to wheel traffic in a no-till system. Soil Science Society of America Journal. 75:2296-2304.
Economically optimal N rates of corn management zones delineated from soil and terrain attributes -
Jaynes, D.B., Kaspar, T.C., Colvin, T. 2011. Economically optimal N rates of corn management zones delineated from soil and terrain attributes. Agronomy Journal. 103:1026-1035.
Estimating soil organic carbon using aerial imagery and soil surveys -
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.
The use of cover crops to manage soil -
Kaspar, T.C., Singer, J.W. 2011. The use of cover crops to manage soil. 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. 321-337.
Seasonal Shifts in the Biochemical Compoments of the Light Fraction, Particulate Organic Matter, and Two Humic Acid Fractions in An Iowa Soil -
Olk, D.C., Cambardella, C.A., Kaspar, T.C. 2010. Seasonal Shifts in the Biochemical Compoments of the Light Fraction, Particulate Organic Matter, and Two Humic Acid Fractions in An Iowa Soil. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting. Oct. 31 - Nov. 4, 2010, Long Beach, CA. CD-ROM.
Using cover crops and cropping systems for nitrogen management -
Dabney, S.M., Meisinger, J.J., Schomberg, H.H., Liebig, M.A., Kaspar, T.C., Delgado, J.A., Mitchell, J., Reeves, D.W. 2010. Using cover crops and cropping systems for nitrogen management. p. 230-281. In Delgado, J.A. and R.F. Follett (eds) Advances in Nitrogen Management for Water Quality, Ankeny, IA.
Denitrification Activity, Wood Loss, and N2O Emissions Over 9 Years From a Wood Chip Bioreactor -
Moorman, T.B., Parkin, T.B., Kaspar, T.C., Jaynes, D.B. 2010. Denitrification Activity, Wood Loss, and N2O Emissions Over 9 Years From a Wood Chip Bioreactor. Ecological Engineering. 36:1567-1574.
Root characteristics of two soybean cultivars grown in fumigated fields in Iowa -
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.
Cover Crops -
Kaspar, T.C. 2009. Cover Crops. In: Indiana Certified Crop Advisor Conference, December 15-16, 2009, Indianapolis, IN. 2009 CD-ROM.
Cover Crop Biomass and Corn Yield Following 13 Rye, Wheat, and Triticale Cultivars Used as Winter Cover Crops -
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.
Cover Crop Effects on Nitrous Oxide Emission from a Manure-Treated Mollisol Reprint Icon -
Jarecki, M.K., Parkin, T.B., Chan, A.S., Kaspar, T.C., Moorman, T.B., Singer, J.W., Kerr, B.J., Hatfield, J.L., Jones, R. 2009. Cover Crop Effects on Nitrous Oxide Emission from a Manure-Treated Mollisol. Agriculture, Ecosystems and Environment. 134(1-2):29-35.
Denitrification in Wood Chip Bioreactors at Different Water Flows -
Greenan, C., Moorman, T.B., Parkin, T.B., Kaspar, T.C., Jaynes, D.B. 2009. Denitrification in Wood Chip Bioreactors at Different Water Flows. Journal of Environmental Quality. 38:1664-1671.
A Centralized Regional Database for Winter Cover Crops in Annual Cropping Systems -
Kaspar, T.C., Kladivko, E., Wyse, D.L., Verhallen, E.A., Sundermeier, A., Mutch, D.R., Baas, D.G. 2008. A Centralized Regional Database for Winter Cover Crops in Annual Cropping Systems [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Oct. 5-9, 2008, Houston, TX.
Winter Cover Crop Effects on Nitrate Leaching in Subsurface Drainage as Simulated by RZWQM-DSSAT -
Li, L., Malone, R.W., Ma, L., Kaspar, T.C., Jaynes, D.B., Saseendran, S.A., Thorp, K.R., Yu, Q., Ahuja, L.R. 2008. Winter Cover Crop Effects on Nitrate Leaching in Subsurface Drainage as Simulated by RZWQM-DSSAT. Transactions of the ASABE. 51:1575-1583.
Studies of spatial patterns of soil redistribution in two small agricultural fields -
Ritchie, J.C., McCarty, G.W., Kaspar, T.C., Venteris, E.R. 2009. Studies of spatial patterns of soil redistribution in two small agricultural fields [abstract]. Agronomy Society of America. 60-1.
Small Grain Winter Cover Crops for Corn and Soybean -
Kaspar, T.C., Singer, J.W. 2008. Small Grain Winter Cover Crops for Corn and Soybean. Electronic Publication. Available: http://www.cai.iastate.edu/modules/module.aspx?modID=91.
Rye Cover Crops in a Corn Silage-Soybean Rotation -
Kaspar, T.C., Singer, J.W. 2007. Rye Cover Crops in a Corn Silage-Soybean Rotation [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.
POTENTIAL AND LIMITATIONS OF COVER CROPS, LIVING MULCHES, AND PERENNIALS TO REDUCE NUTRIENT LOSSES TO WATER SOURCES FROM AGRICULTURAL FIELDS IN THE UPPER MISSISSIPPI BASIN -
Kaspar, T.C., Kladivko, E.J., Singer, J.W., Morse, S., Mutch, D. 2008. Potential and limitations of cover crops, living mulches, and perennials to reduce nutrient losses to water sources from agricultural fields in the upper Mississippi basin. In: Final Report: Gulf Hypoxia and Local Water Quality Concerns Workshop. St. Joseph, Michigan, ASABE. p.129-148.
Potential Methods for Reducing Nitrate Losses in Artificially Drained Fields -
Jaynes, D.B., Kaspar, T.C., Moorman, T.B., Parkin, T.B. 2008. Potential Methods for Reducing Nitrate Losses in Artificially Drained Fields. Journal of Environmental Quality. 37:429-436.
Managing Cover Crops in Conservation Tillage Systems -
Balkcom, K.S., Schomberg, H.H., Reeves, D.W., Clark, A., Baumhardt, R.L., Collins, H.P., Delgado, J.A., Kaspar, T.C., Mitchell, J., Duiker, S. 2007. Managing Cover Crops in Conservation Tillage Systems. In: Clark, A. Managing Cover Crops Profitability. 3rd edition. Handbook Series Book 9. Sustainable Agriculture Network. p. 44-61.
Evaluating and predicting agricultural management effects under tile-drainage using modified APSIM -
Malone, R.W., Huth, N., Carberry, P.S., Ma, L., Kaspar, T.C., Karlen, D.L., Meade, T.G., Kanwar, R.S., Heilman, P. 2007. Evaluating and predicting agricultural management effects under tile-drainage using modified APSIM. Geoderma. 140:310-322.
Rye Cover Crop and Gamagrass Strip Effects on NO3 Concentration and Load in Tile Drainage -
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B. 2007. Rye Cover Crop and Gamagrass Strip Effects on NO3 Concentration and Load in Tile Drainage. Journal of Environmental Quality. 36(5):1503-1511.
Soil Respiration in Response to Landscape Position -
Desutter, T.M., Parkin, T.B., Kaspar, T.C., Sauer, T.J., Hatfield, J.L. 2006. Soil Respiration in Response to Landscape Position [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 12-16, 2006, Indianapolis, IN.
In-Field Bioreactor for Removing Nitrate from Tile Drainage -
Jaynes, D.B., Kaspar, T.C., Moorman, T.B., Parkin, T.B. 2006. In-Field Bioreactor for Removing Nitrate from Tile Drainage [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 12-16, 2006, Indianapolis, IN.
Field Comparison of Methods for Measuring Soil CO2 Flux -
Parkin, T.B., De Sutter, T.M., Prueger, J.H., Kaspar, T.C., Sauer, T.J. 2006. Field Comparison of Methods for Measuring Soil CO2 Flux [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Field measurement results versus DAYCENT simulations in nitrous oxide emission from agricultural soil in Central Iowa -
Jarecki, M.K., Parkin, T.B., Chan, A., Kaspar, T.C., Hatfield, J.L., Jones, R.A. 2006. Field measurement results versus DAYCENT simulations in nitrous oxide emission from agricultural soil in Central Iowa [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Cover Crop Effects on the Fate of Swine Manure-N Applied to Soil -
Kaspar, T.C., Parkin, T.B., Singer, J.W. 2006. Cover Crop Effects on the Fate of Swine Manure-N Applied to Soil [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN.
Field Measurement of Soil Surface Chemical Transport Properties for Comparison of Management Zones -
Heitman, J.L., Gaur, A., Horton, R., Jaynes, D.B., Kaspar, T.C. 2007. Field Measurement of Soil Surface Chemical Transport Properties for Comparison of Management Zones. Soil Science Society of America Journal. 71(2):529-536.
Geomorphic Controls of Soil and Carbon Redistribution Across an Agricultural Landscape -
Ritchie, J.C., McCarty, G.W., Venteris, E.R., Kaspar, T.C. 2006. Geomorphic controls of soil and carbon redistribution across an agricultural landscape [abstract]. American Geophysical Union Fall Meeting Abstract No. B51B-309.
NITROUS OXIDE EMISSIONS FROM CORN/SOYBEAN SYSTEMS IN THE MIDWEST -
Parkin, T.B., Kaspar, T.C. 2006. Nitrous oxide emissions from corn/soybean systems in the Midwest. Journal of Environmental Quality. 35:1496-1506.
Response to "Comments on 'Need for a Soil-based Approach in managing Nitrogen Fertilizers for Profitable Corn Production' and 'Soil Organic Nitrogen Enrichment Following Soybean in an Iowa Corn-Soybean Rotation'" -
Jaynes, D.B., Olk, D.C., Colvin, T., Kaspar, T.C., Karlen, D.L. 2007. Response to "Comments on 'Need for a Soil-based Approach in managing Nitrogen Fertilizers for Profitable Corn Production' and 'Soil Organic Nitrogen Enrichment Following Soybean in an Iowa Corn-Soybean Rotation'". Soil Science Society of America Journal. 71(1):255.
COVER CROP EFFECTS ON THE FATE OF SWINE MANURE-N APPLIED TO SOIL -
Parkin, T.B., Kaspar, T.C., Singer, J.W. 2006. Cover crop effects on the fate of swine manure-N applied to soil. Plant and Soil Journal. 289:141-152.
EXAMINING CHANGES IN SOIL ORGANIC CARBON WITH OAT AND RYE COVER CROPS USING TERRAIN COVARIATES -
Kaspar, T.C., Parkin, T.B., Jaynes, D.B., Cambardella, C.A., Meek, D.W., Jung, Y.S. 2006. Examining changes in soil organic carbon with oat and rye cover crops using terrain covariates. Soil Science Society of America Journal. 70:1168-1177.
COVER CROP SELECTION AND MANAGEMENT FOR MIDWEST FARMING SYSTEMS -
Singer, J.W., Kaspar, T.C. 2006. Cover crop selection and management for midwest farming systems. Iowa Learning Farm Newsletter. Available: http://www.extension.iastate.edu/ilf/.
COVER CROP SELECTION AND MANAGEMENT FOR AGRONOMIC FARMING SYSTEMS -
Singer, J.W., Kaspar, T.C. 2005. Cover crop selection and management for agronomic farming systems. In: Proceedings of the Integrated Crop Management Conference, Nov. 30-Dec. 1, 2005, Ames, IA. p. 197-198.
EFFECTS OF A RYE COVER CROP AND A PERMANENT GAMAGRASS STRIP ON NITRATE LOAD IN TILE DRAINAGE -
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B. 2005. Effects of a rye cover crop and a permanent gamagrass strip on nitrate load in tile drainage [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 6-10, 2005, Salt Lake City, UT.
COMPARING CARBON SUBSTRATES FOR DENITRIFICATION OF SUBSURFACE DRAINAGE WATER -
Greenan, C.M., Moorman, T.B., Kaspar, T.C., Parkin, T.B., Jaynes, D.B. 2006. Comparing carbon substrates for denitrification of subsurface drainage water. Journal of Environmental Quality. 35:824-829.
IDENTIFYING SPATIAL PATTERNS OF EROSION FOR USE IN PRECISION CONSERVATION -
Schumacher, J.A., Venteris, E.R., Mccarty, G.W., Ritchie, J.C., Kaspar, T.C., Colvin, T.S., Jaynes, D.B., Karlen, D.L., Fenton, T.E., Schumacher, T.E., Lindstrom, M.J. 2005. Identifying spatial patterns of erosion for use in precision conservation. Journal of Soil and Water Conservation. 60(6):355-362.
SOIL AMINO ACID ENRICHMENT FOLLOWING SOYBEAN IN AN IOWA CORN-SOYBEAN ROTATION 1753 -
Martens, D.A., Jaynes, D.B., Colvin, T.S., Kaspar, T.C., Karlen, D.L. 2006. Soil amino acid enrichment following soybean in an Iowa corn-soybean rotation. Soil Science Society of America Journal. 70:382-392.
SMALL GRAIN COVER CROPS FOR CORN AND SOYBEAN -
Singer, J.W., Kaspar, T.C., Pedersen, P. 2005. Small grain cover crops for corn and soybean. Fact Sheet:PM 1999. Meeting Abstract. Available: http://www.extension.iastate.edu/pubs/Masterlist4.html#1800
SOIL AND SOIL ORGANIC CARBON REDISTRIBUTION IN AGRICULTURAL ECOSYSTEMS -
Ritchie, J.C., McCarty, G.W., Venteris, E.R., Kaspar, T.C. 2007. Soil and soil organic carbon redistribution in agricultural ecosystems. Geomorphology. 89(1-2):163-171.
RELATIONSHIP OF SOIL RESPIRATION TO CROP AND LANDSCAPE IN THE WALNUT CREEK WATERSHED -
Parkin, T.B., Kaspar, T.C., Senwo, Z., Prueger, J.H., Hatfield, J.L. 2005. Relationship of soil respiration to crop and landscape in the Walnut Creek watershed. Journal of Hydrometeorology. 6(6):812-824.
NITROUS OXIDE EMISSIONS FROM MIDWEST CORN/SOYBEAN CROPPING SYSTEMS -
Parkin, T.B., Kaspar, T.C. 2005. Nitrous oxide emissions from midwest corn/soybean cropping systems. USDA Greenhouse Gas Symposium. http://soilcarboncenter.k-state.edu/conference/Abstract_Pages.htm.
FILLING DATA GAPS IN SOIL RESPIRATION MEASUREMENTS USING AUTOCORRELATION -
Parkin, T.B., Kaspar, T.C. 2005. Filling data gaps in soil respiration measurements using autocorrelation. USDA Greenhouse Gas Symposium. http://soilcarboncenter.k-state.edu/conference/Abstract_Pages.htm
SOIL AND SOIL ORGANIC CARBON REDISTRIBUTION IN AGRICULTURAL ECOSYSTEMS -
Ritchie, J., McCarty, G., Venteris, E., Kasper, T. 2005. Soil and soil organic carbon redistribution in agricultural ecosystems [abstract]. European Geophysical Research Abstracts. 7:00571.
USING SOIL REDISTRIBUTION TO UNDERSTAND SOIL ORGANIC CARBON REDISTRIBUTION AND BUDGETS -
Ritchie, J.C., McCarty, G.W. Venteris, E.R., Kaspar, T.C. 2005. Using sediment budgets to understand soil organic carbon redistribution and budgets. International Association of Hydrological Sciences Publication. 292:3-8.
SOIL CO2 FLUX ON A HILLSLOPE TRANSECT IN RELATION TO TERRAIN VARIABLES, SOIL TEXTURE, SOIL OM, AND RESIDUE INPUTS -
Kaspar, T.C., Parkin, T.B. 2004. Soil CO2 Flux on a Hillslope Transect in Relation to Terrain Variables, Soil Texture, Soil OM, and Residue Inputs [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconsin.
IDENTIFYING SPATIAL PATTERNS OF EROSION FOR USE IN PRECISION CONSERVATION -
Schumacher, J.A., Venteris, E.R., Mccarty, G.W., Ritchie, J.C., Kaspar, T.C., Colvin, T.S., Jaynes, D.B., Karlen, D.L., Fenton, T.E., Schumacher, T.E., Lindstrom, M.J. 2004. Identifying Spatial Patterns of Erosion for Use in Precision Conservation [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts. Madison, Wisconsin. p. 4780.
ULTRASONIC SENSING FOR CORN PLANT CANOPY CHARACTERIZATION -
Abd Aziz, S., Stewart, B.L., Birrell, S.J., Kaspar, T.C., Shrestha, D.S. 2004. Ultrasonic sensing for corn plant canopy characterization. ASAE Annual International Meeting. St. Joseph, MI. Paper No. 04-041120.
DEVELOPMENT OF NITROGEN RESPONSE CURVES USING FIELD SCALE DATA AND DATA MINING -
Chaudhary, A., Colvin, T.S., Jaynes, D.B., Kaspar, T.C. 2004. Development of nitrogen response curves using field scale data and data mining. International Conference on Precision Agriculture Abstracts & Proceedings. [CD-ROM]. Madison, WI.
ASSESSING SOIL ORGANIC CARBON REDISTRIBUTION WITH FALLOUT CESIUM-137 -
Ritchie, J.C., McCarty, G.W., Venteris, E.R., Kaspar, T.C., Owens, L.B., Nearing, M. 2004. Assessing soil organic carbon redistribution with fallout 137Cesium. In: Proceedings of Conserving Soil and Waterfor Society: Sharing Solutions, ISCO 2004-13th International Soil Conservation Organization Conference, July 4-9, 2004, Brisbane, Australia. 613:4. 2004 CDROM.
BEYOND FERTILIZER MANAGEMENT: IN-FIELD APPROACHES FOR REDUCING NITRATE LOADS COMING FROM AGRICULTURAL DRAINAGE TILES -
Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B. 2004. Beyond fertilizer management: in-field approaches for reducing nitrate loads coming from agricultural drainage tiles [abstract]. Final Program Book of Abstracts, The Ninth Biennial Conference Minnesota Water 2004: Policy and Planning to Ensure Minnesota's Water Supplies. Minneapolis, MN. p. 70.
POTENTIAL METHODS FOR REDUCING NITRATE LOSSES IN ARTIFICIALLY DRAINED FIELDS -
Jaynes, D.B., Kaspar, T.C., Moorman, T.B., Parkin, T.B. 2004. Potential methods for reducing nitrate losses in artificially drained fields. International Drainage Symposium. VIII:p. 59-69.
RELATIONSHIP OF CORN AND SOYBEAN YIELD TO SOIL AND TERRAIN PROPERTIES -
Kaspar, T.C., Pulido, D.J., Fenton, T.E., Colvin, T.S., Karlen, D.L., Jaynes, D.B., Meek, D.W. 2004. Relationship of corn and soybean yield to soil and terrain properties. Agronomy Journal. 96(3):700-709.
ASSESSING SOIL AND SOIL CARBON REDISTRIBUTION PATTERNS USING RADIOACTIVE FALLOUT 137 CESIUM -
Ritchie, J.C., McCarty, G.W., Venteris, E.R., Owens, L.B., Kaspar, T.C., Nearing, M.A. 2003. Assessing soil and soil carbon redistribution patterns using radioactive fallout 137 Cesium [abstract]. Abstracts of 2003 Global Climate Terrestrial Ecology Meeting in Tucson, Arizona. p. 28.
TEMPORAL VARIABILITY OF SOIL C02 FLUX: EFFECT OF SAMPLING FREQUENCY ON CUMULATIVE CARBON LOSS ESTIMATION -
Parkin, T.B., Kaspar, T.C. 2004. Temporal variability of soil C02 flux: effect of sampling frequency on cumulative carbon loss estimation. Soil Science Society of America Journal. 68(4):1234-1241.
IDENTIFYING POTENTIAL SOYBEAN MANAGEMENT ZONES FROM MULTI-YEAR YIELD DATA -
Jaynes, D.B., Kaspar, T.C., Colvin, T.S., 2005. Identifying potential soybean management zones from multi-year yield data. Computers in Agriculture. 46(1-3):309-327.
CHANGES IN SOIL CARBON RESPONSE TO YEAR, PREVIOUS CROP, AND COVER CROP -
KASPAR, T.C., PARKIN, T.B., JAYNES, D.B. CHANGES IN SOIL CARBON RESPONSE TO YEAR, PREVIOUS CROP, AND COVER CROP. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.
CORN SOYBEAN YIELD ZONES FROM CLUSTER ANALYSIS OF MULTI-YEAR YIELD DATA -
JAYNES, D.B., KASPAR, T.C., COLVIN, T.S. CORN SOYBEAN YIELD ZONES FROM CLUSTER ANALYSIS OF MULTI-YEAR YIELD DATA. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.
STIMULATION OF DENITRIFICATION AND NITRATE REMOVAL FROM SUBSURFACE DRAINAGE WATER -
MOORMAN, T.B., PARKIN, T.B., JAYNES, D.B., KASPAR, T.C. STIMULATION OF DENITRIFICATION AND NITRATE REMOVAL FROM SUBSURFACE DRAINAGE WATER. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.
CARBON DIOXIDE DYNAMICS DURING A GROWING SEASON IN MIDWESTERN CROPPING SYSTEMS -
Prueger, J.H., Hatfield, J.L., Parkin, T.B., Kustas, W.P., Kaspar, T.C. 2003. Carbon Dioxide Dynamics During a Growing Season in Midwestern Cropping Systems. Environmental Management. 33(1):330-343.
TEMPERATURE CONTROLS ON DIURNAL CO2 FLUX: IMPLICATIONS FOR ESTIMATING SOIL C LOSS -
PARKIN, T.B., KASPAR, T.C. 2003. TEMPERATURE CONTROLS ON DIURNAL CO2 FLUX: IMPLICATIONS FOR ESTIMATING SOIL C LOSS. SOIL SCIENCE SOCIETY OF AMERICA JOURNAL. 67:1763-1772.
DENITRIFICATION-BASED REMOVAL OF NITRATE FROM SUBSURFACE DRAINAGE WATER -
CORN RESPONSE TO NITROGEN ACROSS LANDSCAPE POSITIONS -
KASPAR, T.C., COLVIN, T.S., JAYNES, D.B., KARLEN, D.L. CORN RESPONSE TO NITROGEN ACROSS LANDSCAPE POSITIONS. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2002. CD-ROM. MADISON, WI.
IMPACT OF SAMPLING FREQUENCY ON SOIL CO2 FLUX ESTIMATION -
PARKIN, T.B., KASPAR, T.C. IMPACT OF SAMPLING FREQUENCY ON SOIL CO2 FLUX ESTIMATION. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2002. CD-ROM. MADISON, WI.
SUBSURFACE DRAINAGE MODIFICATIONS TO REDUCE NITRATE LOSSES IN DRAINAGE -
JAYNES, D.B., KASPAR, T.C., MOORMAN, T.B., PARKIN, T.B. SUBSURFACE DRAINAGE MODIFICATIONS TO REDUCE NITRATE LOSSES IN DRAINAGE. ASAE ANNUAL INTERNATIONAL MEETING. 2002. PAPER NO. 02-2015.
PLANT HEIGHT ESTIMATION USING TWO SENSING SYSTEMS -
SHRESTHA, D.S., STEWARD, B.L., BIRRELL, S.J., KASPAR, T.C. PLANT HEIGHT ESTIMATION USING TWO SENSING SYSTEMS. ASAE ANNUAL INTERNATIONAL MEETING. 2002. CD-ROM. ST. JOSEPH, MI.
DETERMINATION OF EARLY STAGE CORN PLANT HEIGHT USING STEREO VISION -
SHRESTHA, D.S., STEWARD, B.L., KASPAR, T.C. DETERMINATION OF EARLY STAGE CORN PLANT HEIGHT USING STEREO VISION. INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE ABSTRACTS & PROCEEDINGS. 2002. CD-ROM. MADISON, WI.
COMPARISON OF TECHNIQUES FOR DEFINING YIELD POTENTIAL ZONES IN AN IOWA FIELD -
JAYNES, D.B., KASPAR, T.C., COLVIN, T.S. COMPARISON OF TECHNIQUES FOR DEFINING YIELD POTENTIAL ZONES IN AN IOWA FIELD. INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE ABSTRACTS & PROCEEDINGS. 2002. CD-ROM. MADISON, WI: ASA-CSSA-SSA.
OAT PLANT EFFECTS ON NET NITROGEN MINERALIZATION -
PARKIN, T.B., KASPAR, T.C., CAMBARDELLA, C.A. OAT PLANT EFFECTS ON NET NITROGEN MINERALIZATION. PLANT AND SOIL JOURNAL. 2002. V. 243. P. 187-195.
RELATIONSHIP BETWEEN SIX YEARS OF CORN YIELDS AND TERRAIN ATTRIBUTES -
KASPAR, T.C., COLVIN, T.S., JAYNES, D.B., KARLEN, D.L., JAMES, D.E., MEEK, D.W., PULIDO, D., BUTLER, H. RELATIONSHIP BETWEEN SIX YEARS OF CORN YIELDS AND TERRAIN ATTRIBUTES. PRECISION AGRICULTURE. 2003. V. 4. P. 87-101.
NITRATE LEACHING AS INFLUENCED BY COVER CROPS IN LARGE SOIL MONOLITHS -
LOGSDON, S.D., KASPAR, T.C., MEEK, D.W., PRUEGER, J.H. NITRATE LEACHING AS INFLUENCED BY COVER CROPS IN LARGE SOIL MONOLITHS. AGRONOMY JOURNAL. 2002. V. 94(4). P. 807-814.
CLUSTER ANALYSIS OF SPATIOTEMPORAL CORN YIELD PATTERNS IN AN IOWA FIELD -
JAYNES,D.B., KASPAR,T.C., COLVIN,T.S., JAMES,D.E., CLUSTER ANALYSIS OF SPATIOTEMPORAL CORN YIELD PATTERNS IN AN IOWA FIELD, AGRONOMY JOURNAL, 2003. v. 95. p. 574-586.
SMALL GRAIN COVER CROPS FOR IOWA -
KASPAR, T.C., PARKIN, T.B., KOHLER, K.A. SMALL GRAIN COVER CROPS FOR IOWA. INTEGRATED CROP MANAGEMENT CONFERENCE PROCEEDINGS. 2001. P. 85-89.
TEMPORAL VARIABILITY OF SOIL RESPIRATION -
PARKIN, T.B., KASPAR, T.C. TEMPORAL VARIABILITY OF SOIL RESPIRATION. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2001. CD-ROM. MADISON, WI.
SPATIAL AND TEMPORAL VARIABILITY OF SOIL CARBON -
KASPAR, T.C., PARKIN, T.B., CAMBARDELLA, C.A., KARLEN, D.L., TOMER, M.D. SPATIAL AND TEMPORAL VARIABILITY OF SOIL CARBON. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2001. CD-ROM. MADISON, WI.
NITROGEN MANAGEMENT STRATEGIES TO REDUCE NITRATE LEACHING IN TILE-DRAINED MIDWESTERN SOILS -
DINNES, D.L., KARLEN, D.L., JAYNES, D.B., KASPAR, T.C., HATFIELD, J.L., COLVIN, T.S., CAMBARDELLA, C.A. NITROGEN MANAGEMENT STRATEGIES TO REDUCE NITRATE LEACHING IN TILE-DRAINED MIDWESTERN SOILS. AGRONOMY JOURNAL. 2002. V. 94. P. 153-171.
CROP ROOT RESPONSE TO SOIL TEMPERATURE IN TEMPERATE REGIONS -
PLANT-SOIL-MICROBE N RELATIONSHIPS IN HIGH RESIDUE MANAGEMENT SYSTEMS -
DINNES, D.L., JAYNES, D.B., KASPAR, T.C., COLVIN, T.S., CAMBARDELLA, C.A., KARLEN, D.L. PLANT-SOIL-MICROBE N RELATIONSHIPS IN HIGH RESIDUE MANAGEMENT SYSTEMS. SOUTH DAKOTA NO TILL ASSOCIATION ANNUAL CONFERENCE. 2001. P. 45-50.
N MANAGEMENT AND HYPOXIA: A RESEARCH FOCUS OF THE USDA-ARS NATIONAL SOIL TILTH LABORATORY -
Dinnes, D.L., Jaynes, D.B., Hatfield, J.L., Burkart, M.R., Parkin, T.B., Cambardella, C.A., Karlen, D.L., Colvin, T.S., Kaspar, T.C., James, D.E. 2001. N management and hypoxia: A research focus of the USDA-ARS National Soil Tilth Laboratory. Farm Bureau Members National Convention. American Farm Bureau Federation, Washington, D.C.
EFFECT OF COARSE TEXTURED MATERIALS, "A" HORIZON DEPTH, CARBONATE DEPTH, PH, AND SOIL TEXTURE ON CORN YIELD VARIABILITY -
USING THE WEIGHT-LOSS-ON-IGNITION METHOD TO MEASURE SPATIAL VARIABILITY OF SOIL CARBON -
NITRATE LEACHING AS INFLUENCED BY COVER CROPS IN LARGE SOIL MONOLITHS -
Logsdon, S.D., Kaspar, T.C., Prueger, J.H., Meek, D.W., Simmons, G.T., Hart, T.T. 2000. Nitrate leaching as influenced by cover crops in large soil monoliths. Soil Science Society of America Annual Meeting. CD-ROM. Madison, Wisconsin.
SMALL GRAIN COVER CROPS AND WHEEL TRAFFIC EFFECTS ON INFILTRATION, RUNOFF, AND EROSION -
ESTIMATING CORN YIELD USING SIX YEARS OF YIELD DATA AND TERRAIN ATTRIBUTES -
YIELD CERTAINTY WITH PLOTS OR FIELDS -
Colvin, T.S., Jaynes, D.B., Kaspar, T.C., James, D.E., Meek, D.W. 2000. Yield certainty with plots or fields [CD-ROM]. International Conference on Precision Agriculture Abstracts & Proceedings. St. Paul, Minnesota.
DECOMPOSITION OF BURIED ROOT RESIDUES IN THE FIELD -
OAT AND RYE ROOT DECOMPOSITION EFFECTS ON NITROGEN MINERALIZATION -
APPLICATION PLACEMENT TECHNIQUES TO INCREASE NITROGEN USE EFFICIENCY AND REDUCE NITRATE LEACHING -
MODEL-BASED TECHNIQUE TO DETERMINE VARIABLE RATE NITROGEN FOR CORN -
Paz, J.O., Batchelor, W.D., Babcock, B.A., Colvin, T.S., Logsdon, S.D., Kaspar, T.C., Karlen, D.L. 1999. Model-based technique to determine variable rate nitrogen for corn. Agricultural Systems. 61:69-75.
NEW NITROGEN APPLICATION/PLACEMENT TECHNIQUES TO INCREASE USE-EFFICIENCY AND REDUCE NITRATE LEACHING -
COVER CROP AND WHEEL TRACK EFFECTS ON INFILTRATION, RUNOFF, AND EROSION -
PLANT EFFECTS ON NITROGEN MINERALIZATION -
OAT AND RYE ROOT DECOMPOSITION EFFECTS ON CARBON AND NITROGEN CYCLING IN A CONTROLLED ENVIRONMENT -
ANALYSIS OF WATER STRESS EFFECTS CAUSING SPATIAL YIELD VARIABILITY IN SOYBEANS -
MODEL-BASED TECHNIQUE TO DETERMINE VARIABLE RATE NITROGEN FOR CORN -
OAT AND RYE OVERSEEDED INTO SOYBEAN AS FALL COVER CROPS IN THE UPPER MIDWEST -
DEPTH INCREMENTAL SOIL PROPERTIES UNDER NO-TILL OR CHISEL MANAGEMENT -
LOCALIZED SOIL MANAGEMENT IN FERTILIZER INJECTION ZONE TO REDUCE NITRATE LEACHING -
EVALUATION OF LOCALIZED COMPACTION AND DOMING TO REDUCE ANION LEACHING LOSSES USING LYSIMETERS -
IMPROVING STAND ESTABLISHMENT IN NO TILL WITH RESIDUE-CLEARING PLANTER ATTACHMENTS -
INFLUENCE OF CORN ROOTS ON WATER AND CHEMICAL MOVEMENT THROUGH UNDISTURBED SOIL COLUMNS -
CORN YIELD RESPONSE TO FERTILIZER FROM AN APPLICATOR DESIGNED TO REDUCE NITRATE LEACHING -
IMPROVED FERTILIZER APPLICATOR TO REDUCE NITRATE FERTILIZER LEACHING FROM CROP LANDS -
CALIBRATION OF A CROP GROWTH MODEL TO PREDICT SPATIAL YIELD VARIABILITY -
OATS OVERSEEDED INTO SOYBEANS AS A FALL COVER CROP -
ECONOMIC EVALUATION OF CROP MANAGEMENT SYSTEMS FOR SUSTAINABLE AGRICULTURE -
ROOTEDGE: SOFTWARE FOR MEASURING ROOT LENGTH FROM DESKTOP SCANNER IMAGES -
OATS OVERSEEDED INTO SOYBEAN AS A FALL COVER CROP -
TESTING A NITROGEN FERTILIZER APPLICATOR DESIGNED TO REDUCE LEACHING LOSSES -
OATS OVERSEEDED INTO SOYBEAN AS A FALL COVER CROP -
CORN PLANTER ATTACHMENT EFFECTS ON SOIL AND RESIDUE -
USING SMALL GRAIN COVER CROPS TO MANAGE NITROGEN IN THE MIDWEST -
TILLAGE AND WHEEL TRAFFIC EFFECTS ON CORN GROWTH AND YIELD -
IMPROVED FERTILIZER BANDING TECHNIQUE TO REDUCE NITRATE-N LEACHING: LYSIMETER EVALUATION -
OATS OVERSEEDED INTO SOYBEANS AS A FALL COVER CROP -
CONVERSION TO NO-TILL INFLUENCE ON INCREMENTAL SOIL PROPERTIES -
MAIZE NODAL ROOT RESPONSE TO TIME OF SOIL RIDGING -
APPLICATIONS TO ROOT RESEARCH METHODOLOGIES BY MEMBERS OF THE CSREES REGIONAL COMMITTEE NCR-60 -
SMEARED SOIL SURFACE EVALUATION BY FIBER OPTIC SENSOR AND ROOT PENETRATION -
SOIL PROPERTY CONTRIBUTIONS TO YIELD VARIATION PATTERNS -
SOIL PROPERTY CONTRIBUTIONS TO YIELD VARIATION PATTERNS -
TILLAGE AND WHEEL TRAFFIC EFFECTS ON CORN YIELD AND ROOT GROWTH -
SEED-ROW RESIDUE MANAGEMENT FOR CORN PRODUCTION IN THE NORTHERN U.S. CORN BELT -
RUNOFF, EROSION, AND SOIL QUALITY CHARACTERISTICS OF A FORMER CRP SITE IN SOUTHWESTERN IOWA -
RESIDUE AND COMPACTION MANAGEMENT IN NO-TILL -
SOLUTE LEACHING AND CROP WATER BALANCE IN LARGE UNDISTURBED SOIL MONOLITHS -
SOIL PHYSICAL PROPERTIES IN NO-TILL WITH AND WITHOUT SWEEP CULTIVATION FOR WEED CONTROL -
LOCALIZED COMPACTION AND DOMING TO REDUCE NITRATE N LEACHING: EXPERIMENTALAND NUMERICAL -
INTERMEDIATE-SCALE SOLUTE LEACHING IN LARGE UNDISTURBED SOIL MONOLITHS -
INTERACTIONS OF CROP RESIDUE WITH SOIL AND CLIMATE -
ACCURATE PERIMETER AND LENGTH MEASUREMENT USING AN EDGE CHORD ALGORITHM -
TRAFFIC PATTERN AND TILLAGE SYSTEM EFFECTS ON CORN ROOT AND SHOOT GROWTH -
EFFECTS OF COULTER TREATMENTS ON SEED-FURROW SMEARING AND EARLY CROP RESPONSE -
EFFECTS OF COULTER TREATMENTS ON SEED FURROW SMEARING AND EARLY CROP RESPONSE -
LOCALIZED COMPACTION AND DOMING TO INCREASE N-USE EFFICIENCY AND REDUCE LEACHING -
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Last Modified: 06/21/2017
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