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United States Department of Agriculture

Agricultural Research Service

Related Topics

David E James
Agroecosystems Management Research
Geographic Information Specialist

Phone: (515) 294-6858
Fax: (515) 294-8125

2110 UNIVERSITY BOULEVARD
NLAE
AMES , IA 500110000


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Effect of variable annual precipitation and nutrient input on nitrogen and phosphorus transport from two Midwestern agricultural watersheds -
Kalkhoff, S.J., Hubbard, L.E., Tomer, M.D., James, D.E. 2016. Effect of variable annual precipitation and nutrient input on nitrogen and phosphorus transport from two Midwestern agricultural watersheds. Science of the Total Environment. 559:53-62. doi: 10.1016/j.scitotenv.2016.03.127.
Agricultural Conservation Planning Toolbox User's Manual -
Porter, S.A., Tomer, M.D., James, D.E., Boomer, K.M. 2015. Agricultural Conservation Planning Toolbox User's Manual. Agricultural Conservation Planning Toolbox User's Manual. Available: www.northcentralwater.org/acpf/.
Agricultural conservation planning framework: 2. Classification of riparian buffer design-types with application to assess and map stream corridors Reprint Icon -
Tomer, M.D., Boomer, K.M., Porter, S.A., Gelder, B.K., James, D.E., McLellan, E. 2015. Agricultural conservation planning framework: 2. Classification of riparian buffer design-types with application to assess and map stream corridors. Journal of Environmental Quality. 44:768-779.
Agricultural conservation planning framework: 1. Developing multi-practice watershed planning scenarios and assessing nutrient reduction potential Reprint Icon -
Tomer, M.D., Porter, S.A., Boomer, K.M., James, D.E., Helmers, M.J., Isenhart, T.M., McLellan, E. 2015. Agricultural conservation planning framework: 1. Developing multi-practice watershed planning scenarios and assessing nutrient reduction potential. Journal of Environmental Quality. 44:754-767.
A planning approach for agricultural watersheds using precision conservation -
Tomer, M.D., Porter, S.A., James, D.E. 2015. A planning approach for agricultural watersheds using precision conservation. Getting Into Soil and Water. p. 22-23.
Opportunities for energy crop production based on subfield scale distribution of profitability -
Bonner, I.J., Cafferty, K.G., Muth Jr., D.J., Tomer, M.D., James, D.E., Porter, S.A., Karlen, D.L. 2014. Opportunities for energy crop production based on subfield scale distribution of profitability. Energies. 7:6509-6526.
Closed depression topography Harps soil, revisited Reprint Icon -
Logsdon, S.D., James, D.E. 2014. Closed depression topography Harps soil, revisited. Soil Horizons. 55(2):1-7. Available at: https://www.soils.org/publications/sh/tocs/55/2.
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.
Introducing the GRACEnet/REAP data contribution, discovery and retrieval system -
Del Grosso, S.J., White, J.W., Wilson, G., Vandenberg, B.C., Karlen, D.L., Follett, R.F., Johnson, J.M., Franzluebbers, A.J., Archer, D.W., Gollany, H.T., Liebig, M.A., Ascough II, J.C., Reyes-Fox, M.A., Starr, J.L., Barbour, N.W., Polumsky, R.W., Gutwein, M., James, D.E., Pellack, L.S. 2013. Introducing the GRACEnet/REAP data contribution, discovery and retrieval system. Journal of Environmental Quality. 42:1274-1280. DOI:10.2134/jeq2013.03.0097.
Combining precision conservation technologies into a flexible framework to facilitate agricultural watershed planning -
Tomer, M.D., Porter, S.A., James, D.E., Boomer, K.M., Kostel, J.A., Mclellan, E. 2013. Combining precision conservation technologies into a flexible framework to facilitate agricultural watershed planning. Journal of Soil and Water Conservation. 68(5):113A-120A.
A framework for watershed conservation planning using precision technologies -
Tomer, M.D., Porter, S.A., James, D.E. 2014. A framework for watershed conservation planning using precision technologies [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 3-6, 2013, Tampa, FL.
Closed depression topography and Harps soil, revisited -
Logsdon, S.D., James, D.E. 2012. Closed depression topography and Harps soil, revisited. ASA-CSSA-SSSA Annual Meeting Abstracts. Available: http://scisoc.confex.com/scisoc/2012am/webprogram/Paper70753.html.
Estimating nitrate load reductions from placing constructed wetlands in a HUC-12 watershed using LiDAR data Reprint Icon -
Tomer, M.D., Crumpton, W.G., Bingner, R.L., Kostel, J.A., James, D.E. 2013. Estimating nitrate load reductions from placing constructed wetlands in a HUC-12 watershed using LiDAR data. Ecological Engineering. 56:69-78.
Siting multiple conservation practices in a tile-drained watershed using LiDAR topographic data -
Soil properties following reforestation or afforestation of marginal cropland -
Sauer, T.J., James, D.E., Cambardella, C.A., Hernandez-Ramirez, G. 2012. Soil properties following reforestation or afforestation of marginal cropland. Plant and Soil. Available: http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s11104-012-1258-8.
Factors impacting nitrate-N removal by wetlands placed using LiDAR topographic data -
Tomer, M.D., Crumpton, W.G., Bingner, R.L., Kostel, J.A., James, D.E. 2011. Factors impacting nitrate-N removal by wetlands placed using LiDAR topographic data. International Conference on Diffuse Pollution. Rotorua, New Zealand. CD-ROM.
Sustaining the Earth's watersheds, agricultural research data system -
Steiner, J.L., Sadler, E.J., Hatfield, J.L., James, D.E., Cole, K.J., Wilson, G.J. 2011. Sustaining the Earth's watersheds, agricultural research data system [abstract]. Soil and Water Conservation Society, Modeling Summit, March 29-31, 2011, Denver, Colorado. Available: www.swcs.org/index.cfm?nodeID=31752&audienceID=1.
Carbon sources and dynamics in afforested and cultivated US corn belt soils -
Hernandez Ramirez, G., Sauer, T.J., Cambardella, C.A., Brandle, J.R., James, D.E. 2010. Carbon sources and dynamics in afforested and cultivated US corn belt soils. In: Gilkes, R.J. and Prakongkep, N., editors. Proceedings of the 19th World Congress of Soil Science, Aug. 6-10, 2010, Brisbane, Australia. DVD.
Carbon sources and dynamics in afforested and cultivated corn belt soils -
Hernandez-Ramirez, G., Sauer, T.J., Cambardella, C.A., Brandle, J.R., James, D.E. 2011. Carbon sources and dynamics in afforested and cultivated corn belt soils. Soil Science Society of America Journal. 75:216-225.
Potential water quality impact of drainage water management in the Midwest USA -
Jaynes, D.B., Thorp, K.R., James, D.E. 2010. Potential water quality impact of drainage water management in the Midwest USA. International Drainage Symposium. ASABE Paper No. IDS-CSBE100084.
Extending the Concept of Precision Conservation to Restoration of Rivers and Streams -
Tomer, M.D., James, D.E., Bean, J.R., Simon, A., Klimetz Ii, P.D., Gelder, B., Yan, B. 2010. Extending the Concept of Precision Conservation to Restoration of Rivers and Streams. In: International Conference on Precision Agriculture Abstracts & Proceedings, July 18-21, 2010, Denver, CO. 2010 CD-ROM.
STEWARDS watershed data system: system design and implementation -
Steiner, J.L., Sadler, E.J., Wilson, G.J., Hatfield, J.L., James, D.E., Vandenberg, B.C., Chen, J., Oster, T., Ross, J.D., Cole, K.J. 2009. STEWARDS watershed data system: system design and implementation. Transactions of the ASABE. 52(5):1523-1533.
Data management to enhance long-term watershed research capacity: context and STWEARDS case study -
Steiner, J.L., Sadler, E.J., Hatfield, J.L., Wilson, G.J., James, D.E., Vandenberg, B.C., Ross, J.D., Oster, T., Cole, K.L. 2009. Data management to enhance long-term watershed research capacity: context and STWEARDS case study. Journal of Ecohydrology. 2:391-398.
Historical Channel Movement and Sediment Accretion Along the South Fork of the Iowa River -
Yan, B., Tomer, M.D., James, D.E. 2010. Historical Channel Movement and Sediment Accretion Along the South Fork of the Iowa River. Journal of Soil and Water Conservation. 65(1):1-8.
Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River -
Tomer, M.D., Yan, B., James, D.E., Cole, K.J. 2009. Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River [abstract]. In: Dust Bowl to Mud Bowl: Sedimentation, Conservation Measures and the Future of Reservoirs. p. 49.
Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River Reprint Icon -
Tomer, M.D., Yan, B., James, D.E., Cole, K.J. 2009. Floodplain Sediment Accretion and Stream-course Straightening Along the South Fork of the Iowa River. Soil and Water Conservation Society Proceedings. Available: http://www.swcs.org
Data management to enhance long-term watershed research capacity -
Steiner, J.L., Sadler, E.J., Hatfield, J.L., Wilson, G.J., James, D.E., Vandenberg, B.C., Ross, J.D., Oster, T., Cole, K.L. 2009. Data management to enhance long-term watershed research capacity. National Sedimentaton Laboratory (NSL)- 50 Years of Soil & Water Research in a Changing Agricultural Environment, Sept. 3-5, 2008, Oxford, MS. 2009 CD-ROM.
Enhancing watershed research capacity: the role of data management -
Steiner, J.L., Sadler, E.J., Hatfield, J.L., Wilson, G.J., James, D.E., Vandenberg, B.C., Ross, J.D., Oster, T., Cole, K.L. 2008. Enhancing watershed research capacity: the role of data management [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts, October 5-9, 2008, Houston, Texas. Abstract No. 535-4. Available: http://a-c-s.confex.com/crops/2008am/webprogram/Paper41960.html
Sustaining the Earth's Watersheds-Agricultural Research Data System: Data development, user interaction, and operations management -
Sadler, E.J., Steiner, J.L., Chen, J., Wilson, G.J., Ross, J.D., Oster, T., James, D.E., Vandenberg, B.C., Hatfield, J.L. 2008. Sustaining the Earth's Watersheds-Agricultural Research Data System: Data development, user interaction, and operations management. Journal of Soil and Water Conservation. 63(6):577-589.
Sustaining the earth's watersheds-agricultural research data system: Overview of development and challenges -
Steiner, J.L., Sadler, E.J., Chen, J., Wilson, G.J., James, D.E., Vandenberg, B.C., Ross, J.D., Oster, T., Cole, K.L. 2008. Sustaining the earth's watersheds-agricultural research data system: Overview of development and challenges. Journal of Soil and Water Conservation. 63(6):569-576.
METHODS TO PRIORITIZE PLACEMENT OF RIPARIAN BUFFERS FOR IMPROVED WATER QUALITY -
Tomer, M.D., Dosskey, M.G., Burkart, M.R., James, D.E., Helmers, M.J., Eisenhauer, D.E. 2008. Methods to prioritize placement of riparian buffers for improved water quality. Agroforestry Systems. Available: http://www.springerlink.com/content/p316k5622l171003.
Assessment of the Iowa River's South Fork Watershed: Part 2. Conservation Practices -
Tomer, M.D., Moorman, T.B., James, D.E., Hadish, G., Rossi, C.G. 2008. Assessment of the Iowa River's South Fork Watershed: Part 2. Conservation Practices. Journal of Soil and Water Conservation. 63(6):371-379.
The Extent of Cropland Drainage in the United States -
Jaynes, D.B., James, D.E. 2007. The Extent of Cropland Drainage in the United States [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.
E. coli and Enterococcus in a Large Agricultural Watershed: Temporal, Hydrologic and Animal Production -
Moorman, T.B., Tomer, M.D., James, D.E. 2007. E. coli and enterococcus in a large agricultural watershed: temporal, hydrologic and animal production [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, Nov. 4-8, 2007, New Orleans, LA.
Patterns of sediment and phosphorus accumulation in a riparian buffer -
Tomer, M.D., Moorman, T.B., Kovar, J.L., James, D.E., Burkart, M.R 2007. Patterns of sediment and phosphorus accumulation in a riparian buffer [CD-ROM]. In: ASA-CSSA-SSSA Annual Meeting Abstracts, November 4-8, 2007, New Orleans, LA.
Water Quality and Conservation Practices in the South Fork of the Iowa River -
Moorman, T.B., Tomer, M.D., James, D.E., Hadish, G., Rossi, C.G. 2008. Water Quality and Conservation Practices in the South Fork of the Iowa River. USDA-CSREES National Water Quality Conference. Available: http://www.soil.ncsu.edu/swetc/waterconf/2008/home08.htm
STEWARDS: A watershed data system -
Steiner, J.L., Sadler, E.J., Wilson, G.J., James, D.E., Vandenberg, B.C., Ross, J.D., Oster, T., Cole, K.J., Chen, J., Hatfield, J.L. 2007. Stewards: A watershed data system [abstract]. ASA-CSSA-SSSA Annual. CD-ROM 2007.
Water Quality and Conservation Practices in the South Fork of the Iowa River -
Tomer, M.D., James, D.E., Green, C.H., Hadish, G., Moorman, T.B. 2007. Water Quality and Conservation Practices in the South Fork of the Iowa River [abstract]. Soil and Water Conservation Society Proceedings. p. 40.
Spatial Patterns of Sediment and Phosphorus in a Riparian Buffer, Western Iowa -
Tomer, M.D., Moorman, T.B., Kovar, J.L., James, D.E., Burkart, M. 2007. Spatial Patterns of Sediment and Phosphorus in a Riparian Buffer, Western Iowa. Journal of Soil and Water Conservation. 62(5):329-338.
PREDICTING SPATIAL VARIATION OF CROP YIELD ACROSS A LANDSCAPE USING AGGREGATED ENVIRONMENTAL DATA -
Williams, C.L., Liebman, M., Edwards, J.W., James, D.E., Singer, J.W., Arritt, R.W., Herzmann, D. 2008. Predicting spatial variation of crop yield across a landscape using aggregated environmental data. Crop Science. 48:1545-1559.
Implications of a Conservation Practices Inventory for Water Quality in an Iowa Watershed -
Tomer, M.D., Hadish, G., James, D.E., Cole, K.L. 2006. Implications of a Conservation Practices Inventory for Water Quality in an Iowa Watershed [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Nov. 12-16, 2006, Indianapolis, IN. 2006 CDROM.
Use of aggregated environment data to predict spatial variation of crop yields across a landscape -
Williams, C., Liebman, M., Edwards, J.W., James, D.E., Herzmann, D., Singer, J.W., Arritt, R. 2006. Use of aggregated environment data to predict spatial variation of crop yields across a landscape. American Society of Agronomy Abstracts. P314-3.
Conservation Practices and Water Quality in the Iowa River's South Fork Watershed -
Tomer, M.D., James, D.E., Green, C.H., Moorman, T.B. 2006. Conservation Practices and Water Quality in the Iowa River's South Fork Watershed [abstract]. Soil and Water Conservation Society. p.39.
ESCHERICHIA COLI AND ENTEROCOCCUS IN THE SOUTH FORK OF THE IOWA RIVER WATERSHED -
Moorman, T.B., Tomer, M.D., James, D.E. 2006. Escherichia coli and enterococcus in the south fork of the Iowa river watershed [abstract]. Soil and Water Conservation Society. p. 87.
WATER QUALITY AND CONSERVATION PRACTICES IN THE IOWA RIVER'S SOUTH FORK WATERSHED -
Tomer, M.D., Moorman, T.B., James, D.E., Green, C.H., Burkart, M.R. 2007. Water quality and conservation practices in the Iowa River's South Fork Watershed. Proceedings of USDA-CSREES National Water Quality Conference. p.17.
DAILY ESTIMATES OF RAINFALL, WATER RUNOFF, AND SOIL EROSION IN IOWA -
Cruse, R.M., Flanagan, D.C., Frankenberger, J.R., Gelder, B.K., Herzmann, D., James, D.E., Krajewski, W., Kraszewski, M., Laflen, J.M., Opsomer, J. and Todey, D. 2006. Daily estimates of rainfall, water runoff, and soil erosion in iowa. Journal of Soil and Water Conservation. 61(4):191-199.
VARIATION IN SURFACE-SOIL PROPERTIES AND WATER CONTENTS ACROSS TWO WATERSHEDS WITH CONTRASTING TILLAGE HISTORIES -
Tomer, M.D., Cambardella, C.A., James, D.E., Moorman, T.B. 2005. Variation in surface-soil properties and water contents across two watersheds with contrasting tillage histories. In: Proceedings of the Soil Science Society of America Annual Meeting. Soil Science Society of American Annual Meeting, November 6-10, 2005, Salt Lake City, UT. 2005 CDROM.
SURFACE-SOIL PROPERTIES AND WATER CONTENTS ACROSS TWO WATERSHEDS WITH CONTRASTING TILLAGE HISTORIES -
Tomer, M.D., Cambardella, C.A., James, D.E., Moorman, T.B. 2006. Surface-soil properties and water contents across two watersheds with contrasting tillage histories. Soil Science Society of America Journal. 70:620-630.
CONSERVATION PRACTICES: SHORT TERM DECISIONS WITH LONG TERM EFFECTS -
Tomer, M.D., Burkart, M.R., Cambardella, C.A., Meek, D.W., James, D.E., Kramer, L.A. 2005. Conservation practices: short term decisions with long term effects. Soil Conservation and Water Quality Symposium Proceedings. Available: http://www.swcs.org/en/swcs_international_conferences/2005_annual_conference/index.cfm?nodeID=7455&audienceID=1
PLACEMENT OF RIPARIAN FOREST BUFFERS TO IMPROVE WATER QUALITY -
Tomer, M.D., Dosskey, M.G., Burkart, M.R., James, D.E., Helmers, M.J., Eisenhauer, D.E. 2005. Placement of riparian forest buffers to improve water quality. [CD-ROM]. ST. PAUL, MN: North American Agroforestry Conference.
RELATING HYDROLOGIC VARIABLES AND STREAM ORDER TO LOCATE RIPARIAN BUFFERS -
INTEGRATING PRINCIPLES OF NITROGEN DYNAMICS IN A METHOD TO ESTIMATE LEACHABLE NITROGEN UNDER AGRICULTURAL SYSTEMS -
IMPACTS OF INTEGRATED CROP-LIVESTOCK SYSTEMS ON NITROGEN DYNAMICS AND SOIL EROSION IN WESTERN IOWA WATERSHEDS -
Burkart, M.R., James, D.E., Liebman, M.Z., Herndl, C. 2005. Impacts of integrated crop-livestock systems on nitrogen dynamics and soil erosion in western Iowa watersheds. Journal of Geophysical Research-Biogeosciences. 110:G1. G01009,10.1029/2004JG000008.
A NITROGEN BUDGET MODEL AS AN INDICATOR OF LEACHABLE NITROGEN UNDER AGRICULTURAL CATCHMENTS -
Burkart, M.R., James, D.E., Liebman, M., Van Ouwerkerk, E. 2005. A nitrogen budget model as an indicator of leachable nitrogen under agricultural catchments. Poster. Ames, IA.
A NITROGEN BUDGET MODEL AS AN INDICATOR OF LEACHABLE NITROGEN UNDER AGRICULTURAL CATCHMENTS -
Burkart, M.R., James, D.E., Liebman, M., Van Ouwerkerk, E. 2004. A nitrogen budget model as an indicator of leachable nitrogen under agricultural catchments [CD-ROM]. Washington, D.C. American Geophysical Union.
SWAT MODEL DEVELOPMENT FOR A LARGE AGRICULTURAL WATERSHED IN IOWA -
Green, C.H., Di Luzio, M., Tomer, M.D., Arnold, J.G., James, D.E. 2004. Swat model development for a large agricultural watershed in Iowa [CD-ROM]. ASA-CSSA-SSSA Proceedings. Madison, WI.
THE IOWA RIVER'S SOUTH FORK WATERSHED: TERRAIN, LAND USE, AND WATER QUALITY -
Tomer, M.D., Burkart, M.R., James, D.E., Cole, K.J., Greenan, C.M., Green, C.H. 2004. The Iowa River's South Fork watershed: Terrain, land use, and water quality [CD-ROM]. ASA-CSSA-SSSA Proceedings. Madison, WI.
INTEGRATING PRINCIPLES OF NITROGEN DYNAMICS IN A METHOD TO ESTIMATE LEACHABLE NITROGEN UNDER AGRICULTURAL SYSTEMS -
Burkart, M.R., James, D.E., Liebman, M., Vanouwerkerk, E. 2004. Integrating principles of nitrogen dynamics in a method to estimate leachable nitrogen under agricultural systems[abstract]. Proceedings of the 8th International Conference on Diffuse Pollution. 1:175
RELATING HYDROLOGIC VARIABLES AND STREAM ORDER TO LOCATE RIPARIAN BUFFERS -
Burkart, M.R., James, D.E., Tomer, M.D. 2004. Relating hydrologic variables and stream order to locate riparian buffers [CD-ROM]. Proceedings of the 8th International Conference on Diffuse Pollution. Kyoto, Japan; London, England.
THE IOWA RIVER'S SOUTH FORK WATERSHED: TERRAIN, LAND USE, AND WATER QUALITY -
Tomer, M.D., Burkart, M.R., James, D.E., Cole, K.J., Greenan, C.M., Green, C.H. 2004. The Iowa River's South Fork watershed: terrain, land use, and water quality. Soil and Water Conservation Society Proceedings. p. 15.
EFFECTS OF INTEGRATED CROP-LIVESTOCK SYSTEMS ON LEACHABLE NITROGEN, CHANGE IN SOIL ORGANIC NITROGEN, AND SOIL EROSION IN WESTERN IOWA WATERSHEDS -
QUANTIFICATION OF TILLAGE AND LANDSCAPE EFFECTS ON SOIL CARBON IN SMALL IOWA WATERSHEDS -
Moorman, T.B., Cambardella, C.A., James, D.E., Karlen, D.L., Kramer, L.A. 2004. Quantification of tillage and landscape effects on soil carbon in small Iowa watersheds. Soil & Tillage Research. 78(2):225-236.
DO SOIL SURVEY AND TERRAIN ANALYSES IDENTIFY SIMILAR PRIORITY SITES FOR CONSERVATION? -
Tomer, M.D., James, D.E. 2004. Do soil survey and terrain analyses identify similar priority sites for conservation?. Soil Science Society of America Journal. 68:1905-1915.
USING TERRAIN ANALYSIS TO PLAN THE PLACEMENT OF CONSERVATION PRACTICES IN A WATERSHED -
Tomer, M.D., James, D.E., Isenhart, T.M. 2003. Using terrain analysis to plan the placement of conservation practices in a watershed [CD-ROM]. Kansas City, MO: Midwest Fish and Wildlife Conference.
RUNOFF AND BASEFLOW RELATIONSHIPS AS INFLUENCED BY MANAGEMENT AND TERRAIN -
TOMER, M.D., MEEK, D.W., KRAMER, L.A., JAMES, D.E. RUNOFF AND BASEFLOW RELATIONSHIPS AS INFLUENCED BY MANAGEMENT AND TERRAIN. ASA-CSSA-SSSA ANNUAL MEETING ABSTRACTS. 2003. CD-ROM. MADISON, WI.
HYDROLOGIC AND TERRAIN VARIABLES TO AID STRATEGIC LOCATION OF RIPARIAN BUFFERS -
Burkart, M.R., James, D.E., Tomer, M.D. 2004. Hydrologic and terrain variables to aid strategic location of riparian buffers. Journal of Soil And Water Conservation. 59(5):105-115.
MODELING HYDROLOGIC VARIABLES AND TERRAIN FEATURES FOR STRATEGICALLY LOCATING RIPARIAN BUFFERS AND WETLANDS -
BURKART, M.R., TOMER, M.D., JAMES, D.E., ISENHART, T. MODELING HYDROLOGIC VARIABLES AND TERRAIN FEATURES FOR STRATEGICALLY LOCATING RIPARIAN BUFFERS AND WETLANDS. FIRST INTERAGENCY CONFERENCE ON RESEARCH IN THE WATERSHEDS. 2003. CD-ROM. TUCSON, AZ.
MEASUREMENT AND PREDICTION OF PHOSPHORUS TRANSPORT FROM SWINE MANURE AT THE WATERSHED SCALE -
Sauer, T.J., Sreematkandalam, K.C., Tim, U.S., James, D.E., Hatfield, J.L. Measurement and Prediction of Phosphorus Transport From Swine Manure at the Watershed Scale [abstract]. International Symposium on Agricultural & Food Processing Wastes Proceeding. American Society of Agricultural Engineers. p. 535.
MEASUREMENT AND PREDICTION OF PHOSPHORUS TRANSPORT FROM SWINE MANURE AT THE WATERSHED SCALE -
SAUER, T.J., SREEMATKANDALAM, K.C., TIM, U.S., JAMES, D.E., HATFIELD, J.L. MEASUREMENT AND PREDICTION OF PHOSPHORUS TRANSPORT FROM SWINE MANURE AT THE WATERSHED SCALE. INTERNATIONAL SYMPOSIUM ON AGRICULTURAL & FOOD PROCESSING WASTES PROCEEDING. 2003. P. 535-541.
A MULTI-MODEL APPROACH FOR SUSTAINABLE AGRICULTURE IN THE US CORN BELT -
VAN OUWERKERK, E.J., JAMES, D.E., RICHARD, T.L., BURKART, M.R., LIEBMAN, M. A MULTI-MODEL APPROACH FOR SUSTAINABLE AGRICULTURE IN THE US CORN BELT. ASAE ANNUAL INTERNATIONAL MEETING. 2003. ABSTRACT. P. 387.
A MULTI-MODEL APPROACH FOR SUSTAINABLE AGRICULTURE IN THE US CORN BELT -
VAN OUWERKERK, E., JAMES, D.E., RICHARD, T.L., LIEBMAN, M., BURKART, M.R. A MULTI-MODEL APPROACH FOR SUSTAINABLE AGRICULTURE IN THE US CORN BELT. ASAE ANNUAL INTERNATIONAL MEETING. 2003. P. 387-393.
ESTIMATING HYDROLOGIC VARIABLES AND TERRAIN FEATURES TO STRATEGICALLY LOCATE RIPARIAN BUFFERS -
BURKART, M.R., JAMES, D.E., TOMER, M.D. ESTIMATING HYDROLOGIC VARIABLES AND TERRAIN FEATURES TO STRATEGICALLY LOCATE RIPARIAN BUFFERS. AMERICAN WATER RESOURCES ASSOCIATION CONFERENCE PROCEEDINGS. 2003. CD-ROM. MIDDLEBURG, VA.
OPTIMIZING THE PLACEMENT OF RIPARIAN PRACTICES IN A WATERSHED USING TERRAIN ANALYSES -
TOMER, M.D., JAMES, D.E., ISENHART, T.M. OPTIMIZING THE PLACEMENT OF RIPARIAN PRACTICES IN A WATERSHED USING TERRAIN ANALYSES. JOURNAL OF SOIL AND WATER CONSERVATION. 2003. V. 58(4). P. 198-206.
MODELING HYDROLOGIC VARIABLES AND TERRAIN FEATURES FOR STRATEGICALLY LOCATING RIPARIAN BUFFERS AND WETLANDS -
BURKART, M.R., JAMES, D.E., TOMER, M.D. MODELING HYDROLOGIC VARIABLES AND TERRAIN FEATURES FOR STRATEGICALLY LOCATING RIPARIAN BUFFERS AND WETLANDS. AMERICAN GEOPHYSICAL UNION. 2002. CD-ROM. WASHINGTON, DC.
AGRICULTURAL NITROGEN TRENDS IN THE MISSISSIPPI BASIN, 1949-1997 -
OPTIMIZING THE PLACEMENT OF RIPARIAN PRACTICES TO INTERCEPT NUTRIENTS IN A TILE-DRAINED WATERSHED -
TOMER, M.D., JAMES, D.E. OPTIMIZING THE PLACEMENT OF RIPARIAN PRACTICES TO INTERCEPT NUTRIENTS IN A TILE-DRAINED WATERSHED. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2002. CD-ROM. MADISON, WI.
HYDROLOGIC VARIABLES FOR OPTIMUM LOCATION OF RIPARIAN BUFFERS TO REDUCE NON-POINT-SOURCE AGRICULTURAL CONTAMINANTS -
BURKART, M.R., JAMES, D.E. HYDROLOGIC VARIABLES FOR OPTIMUM LOCATION OF RIPARIAN BUFFERS TO REDUCE NON-POINT-SOURCE AGRICULTURAL CONTAMINANTS. INTERNATIONAL CONFERENCE ON DIFFUSE POLLUTION. 2002. CD-ROM. AMSTERDAM, NL.
OPTIMIZING PLACEMENT OF PRACTICES TO INTERCEPT NUTRIENTS IN A TILED-DRAINED AGRICULTURAL WATERSHED -
Tomer, M.D., James, D.E. 2002. Optimizing placement of practices to intercept nutrients in a tiled-drained agricultural watershed [abstract]. Soil and Water Conservation Society. 57:296
POTENTIAL IMPACT OF EARTHEN WASTE STORAGE STRUCTURES ON WATER RESOURCES IN IOWA -
SIMPKINS, W.W., BURKART, M.R., HELMKE, M.F., TWEDT, T.N., JAMES, D.E., JAQUIS, R.J., COLE, K.J. POTENTIAL IMPACT OF EARTHEN WASTE STORAGE STRUCTURES ON WATER RESOURCES IN IOWA. JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION. 2002. V. 38(3). P. 759-771.
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.
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.
A METHOD FOR SOURCE-LOAD ALLOCATION OF NUTRIENTS IN AGRICULTURAL WATERSHEDS -
BURKART, M.R., JAMES, D.E. A METHOD FOR SOURCE-LOAD ALLOCATION OF NUTRIENTS IN AGRICULTURAL WATERSHEDS. AMERICAN GEOPHYSICAL UNION. 2001. CD-ROM. WASHINGTON, DC.
PREDICTED AND MEASURED PHOSPHORUS TRANSPORT IN A WATERSHED WITH INTENSIVE SWINE PRODUCTION -
MEASURED AND PREDICTED PHOSPHORUS TRANSPORT FROM ANIMAL MANURE IN A MIDWESTERN U.S. WATERSHED -
AGRICULTURAL NITROGEN TRENDS IN THE MISSISSIPPI BASIN 1949-1997 -
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.
TEMPORAL AND GEOGRAPHIC TRENDS OF AGRICULTURAL NITROGEN AND RELATIONS TO STREAM LOADS IN THE MISSISSIPPI BASIN -
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.
GEOGRAPHIC DISTRIBUTION OF EXCESS AGRICULTURAL-NITROGEN IN THE MISSISSIPPI RIVER BASIN -
AGRICULTURAL-NITROGEN CONTRIBUTION TO HYPOXIA IN THE GULF OF MEXICO -
CONTRIBUTIONS TO GULF OF MEXICO HYPOXIA FROM AGRICULTURAL NITROGEN IN THE MISSISSIPPI BASIN -
FIELD-SCALE WATERSHED EVALUATIONS ON DEEP LOESS SOILS: I. TOPOGRAPHY AND AGRONOMIC PRACTICES -
Karlen, D.L., Kramer, L.A., James, D.E., Buhler, D.D., Moorman, T.B., Burkart, M.R. 1999. Field-scale watershed evaluations on deep loess soils: I. topography and agronomic practices. Journal of Soil and Water Conservation. 54(4):693-703.
FIELD-SCALE WATERSHED EVALUATIONS ON DEEP LOESS SOILS: II. HYDROLOGIC RESPONSES TO DIFFERENT AGRICULTURAL LAND MANAGEMENT SYSTEMS -
Kramer, L.A., Burkart, M.R., Meek, D.W., Jaquis, R.J., James, D.E. 1999. Field-scale watershed evaluations on deep loess soils: II. Hydrologic responses to different agricultural land management systems. Journal of Soil and Water Conservation. 54(4):705-710.
GEOGRAPHIC DISTRIBUTION OF EXCESS AGRICULTURAL-NITROGEN IN THE MISSISSIPPI RIVER BASIN -
AN INVESTIGATION OF THE HYDROGEOLOGIC SETTINGS OF SELECTED EARTHEN WASTE STORAGE SYSTEMS IN IOWA -
APPLICATION OF FIELD-SCALE MODELS AND GEOREFERENCED DATA TO ESTIMATE RESIDUAL NITROGEN FROM AGRICULTURE IN THE MISSISSIPPI RIVER BASIN -
AGRICULTURAL-NITROGEN SOURCES AND POTENTIAL CONTRIBUTIONS TO HYPOXIA IN THEGULF OF MEXICO -
AGRICULTURAL-NITROGEN CONTRIBUTIONS TO HYPOXIA IN THE GULF OF MEXICO -
AGRICULTURAL-NITROGEN CONTRIBUTIONS TO HYPOXIA IN THE GULF OF MEXICO -
ENHANCING SOIL MAPS USING DIGITAL TERRAIN ANALYSIS -
CROP YIELD VARIABILITY AS INFLUENCED BY WATER IN RAIN-FED AGRICULTURE -
CROP YIELD VARIABILITY AS INFLUENCED BY WATER IN RAIN-FED AGRICULTURE -
AGRICULTURAL-NITROGEN CONTRIBUTIONS TO GULF OF MEXICO HYPOXIA -
AGRICULTURAL-NITROGEN CONTRIBUTIONS TO GULF OF MEXICO HYPOXIA -
ASSESSING GROUNDWATER VULNERABILITY TO AGRICHEMICAL CONTAMINATION IN THE MIDWEST U.S. -
USING A GIS TO ASSESS GROUND-WATER VULNERABILITY TO DIFFUSE AGRICHEMICAL CONTAMINATION IN THE MIDWESTERN U.S. -
Last Modified: 5/2/2016
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