Cropping Systems and Water Quality Research : People & Places

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Kenneth A. Sudduth (Ken)

Agricultural Engineer

Publications (Clicking on the reprint icon

will take you to the publication reprint.)

Biological indicators of soil quality and soil organic matter characteristics in an agricultural management continuum - (Peer Reviewed Journal) - (04-Apr-13)

Automated sensing of hydroponic macronutrients using a computer-controlled system with an array of ion-selective electrodes - (Peer Reviewed Journal)

Kim, H., Kim, W., Roh, M., Kang, C., Park, J., Sudduth, K.A. 2013. Automated sensing of hydroponic macronutrients using a computer-controlled system with an array of ion-selective electrodes. Computers and Electronics in Agriculture. 93:46-54.

Relating mobile sensor soil strength to penetrometer cone index - (Peer Reviewed Journal) - (30-Dec-12)

Validation testing of a soil macronutrient sensing system - (Peer Reviewed Journal)

Kim, H., Sudduth, K.A., Hummel, J.W., Drummond, S.T. 2013. Validation testing of a soil macronutrient sensing system. Transactions of the ASABE. 56(1):23-31.

Comparing LAI estimates of corn and soybean from vegetation indices of multi-resolution satellite images - (Peer Reviewed Journal)

Kim, S., Hong, S., Sudduth, K.A., Kim, Y., Lee, K. 2012. Comparing LAI estimates of corn and soybean from vegetation indices of multi-resolution satellite images. Korean Journal of Remote Sensing. 28(6):597-609.

Response surface models of subsoil K concentration for loess over till soils in Missouri - (Proceedings)

Myers, D.B., Kitchen, N.R., Miles, R.J., Sudduth, K.A., Sadler, E.J., Grunwald, S. 2012. Response surface models of subsoil K concentration for loess over till soils in Missouri. 42nd North Central Extension-Industry Soil Fertility Conference Proceedings. CDROM.

Modeling soil electrical conductivity-depth relationships with data from proximal and penetrating ECa sensors - (Peer Reviewed Journal)

Sudduth, K.A., Myers, D.B., Kitchen, N.R., Drummond, S.T. 2013. Modeling soil electrical conductivity-depth relationships with data from proximal and penetrating ECa sensors. Geoderma. 199:12-21.

A simple index explains annual atrazine transport from surface runoff-prone watersheds in the north-central USA - (Peer Reviewed Journal)

Sadler, E.J., Sudduth, K.A., Lerch, R.N., Baffaut, C., Kitchen, N.R. 2012. A simple index explains annual atrazine transport from surface runoff-prone watersheds in the north-central USA. Hydrological Processes. DOI: 10.1002/hyp.9544.

Water stress effects on spatially referenced cotton crop canopy properties - (Abstract Only)

Vories, E.D., Sudduth, K.A., Stevens, W.E., Drummond, S.T. 2012. Water stress effects on spatially referenced cotton crop canopy properties. Agronomy Abstracts. Paper No. 59-8.

Combining long-term herbicide monitoring with identification of vulnerable areas in restrictive layer watersheds - (Abstract Only)

Lerch, R.N., Baffaut, C., Sadler, E.J., Kitchen, N.R., Sudduth, K.A. 2011. Combining long-term herbicide monitoring with identification of vulnerable areas in restrictive layer watersheds [abstract]. American Chemical Society National Meeting, August 28-September 1, 2011, Denver, Colorado. 12801.

Goodwater Creek experimental watershed LTAR - representing runoff-prone environments - (Abstract Only)

Sadler, E.J., Lerch, R.N., Baffaut, C., Sudduth, K.A., Kitchen, N.R., Kremer, R.J., Vories, E.D., Anderson, S.H. 2012. Goodwater Creek experimental watershed LTAR - representing runoff-prone environments [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. CDROM.

Yield Editor 2.0: software for automated removal of yield map errors - (Proceedings)

Sudduth, K.A., Drummond, S.T., Myers, D.B. 2012. Yield Editor 2.0: software for automated removal of yield map errors. In: American Society of Agricultural and Biological Engineers International Meeting Technical Papers. July 29 – August 1, 2012, Dallas, Texas. Paper No. 121338243.

Watershed-scale land-use mapping with satellite imagery - (Proceedings)

Nguyen, A.T., Thompson, A.L., Sudduth, K.A. 2012. Watershed-scale land-use mapping with satellite imagery. In: American Society of Agricultural and Biological Engineers International Meeting Technical Papers. July 29 – August 1, 2012, Dallas, Texas. Paper No. 121338314.

Comparison of two spectrometers for profile soil carbon sensing - (Proceedings)

Hodge, A.M., Sudduth, K.A. 2012. Comparison of two spectrometers for profile soil carbon sensing. In: American Society of Agricultural and Biological Engineers International Meeting Technical Papers. July 29 – August 1, 2012, Dallas, Texas. Paper No. 121338240.

Estimating soil quality indicators with diffuse reflectance spectroscopy - (Proceedings)

Sudduth, K.A., Kremer, R.J., Kitchen, N.R., Myers, D.B. 2012. Estimating soil quality indicators with diffuse reflectance spectroscopy. International Conference on Precision Agriculture, July 15-18, 2012, Indianapolis, Indiana. 2012 CDROM.

Issues in analysis of soil-landscape effects in a large regional yield map collection - (Proceedings)

Myers, D.B., Kitchen, N.R., Sudduth, K.A. 2012. Issues in analysis of soil-landscape effects in a large regional yield map collection. Proceedings of the Annual Precision Ag Conference. 11th International Conference on Precision Agriculture, July 15-18, 2012, Indianapolis, Indiana, 2012 CDROM.

Automated yield map delay identification using phase correlation methodology - (Peer Reviewed Journal)

Lee, D., Sudduth, K.A., Drummond, S.T., Chung, S., Myers, D.B. 2012. Automated yield map delay identification using phase correlation methodology. Transactions of the ASABE. 55(3):743-752.

Corn hybrid growth stage influence on crop reflectance sensing - (Peer Reviewed Journal)

Sheridan, A.H., Kitchen, N.R., Sudduth, K.A., Drummond, S.T. 2011. Corn hybrid growth stage influence on crop reflectance sensing. Agronomy Journal. 104:158-164.

Using APEX to develop and validate physically-based indices for the delineation of critical management areas - (Peer Reviewed Journal)

Mugdal, A., Baffaut, C., Anderson, S.H., Sadler, E.J., Kitchen, N.R., Sudduth, K.A., Lerch, R.N. 2012. Using APEX to develop and validate physically-based indices for the delineation of critical management areas. Journal of Soil and Water Conservation. 67: 284-299.

Reflectance spectroscopy detects management and landscape differences in soil carbon and nitrogen - (Peer Reviewed Journal)

Chaudhary, V.P., Sudduth, K.A., Kitchen, N.R., Kremer, R.J. 2012. Reflectance spectroscopy detects management and landscape differences in soil carbon and nitrogen. Soil Science Society of America Journal. 76(2):597-606.

Irrigation scheduling based on crop canopy temperature for humid environments - (Peer Reviewed Journal)

Bockhold, D.L., Thompson, A.L., Sudduth, K.A., Henggeler, J.C. 2011. Irrigation scheduling based on crop canopy temperature for humid environments. Transactions of the ASABE. 54(6):2021-2028.

Sensor-based nitrogen applications out-performed producer-chosen rates for corn in on-farm demonstrations - (Peer Reviewed Journal)

Scharf, P.C., Shannon, D.K., Palm, H.L., Sudduth, K.A., Drummond, S.T., Kitchen, N.R., Mueller, L.J., Hubbard, V.C., Oliveira, L.F. 2011. Sensor-based nitrogen applications out-performed producer-chosen rates for corn in on-farm demonstrations. Agronomy Journal. 103(6):1683-1691.

Nadir and oblique canopy reflectance sensing for N application in corn - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Drummond, S.T. 2011. Nadir and oblique canopy reflectance sensing for N application in corn. ASABE Annual International Meeting, August 7-10, 2011, Louisville, Kentucky. Paper No. 1111261.

Soil Survey Grain Productivity and Productivity Risk Assessment with Yield Map Data - (Abstract Only)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Young, F. 2011. Soil Survey Grain Productivity and Productivity Risk Assessment with Yield Map Data [abstract]. ASA-CSSA-SSSA International Meeting, October 16-19, 2011, San Antonio, Texas. 369-4.

Large Extent Spatial Models of Grain Yield: Where Are the Marginal Areas? - (Abstract Only)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Young, F. 2011. Large Extent Spatial Models of Grain Yield: Where Are the Marginal Areas? [abstract]. ASA-CSSA-SSSA International Meeting, October 16-19, 2011, San Antonio, Texas. 262-7.

Proximal soil sensing to parameterize spatial environmental modeling - (Abstract Only)

Sudduth, K.A., Baffaut, C., Sadler, E.J. 2011. Proximal soil sensing to parameterize spatial environmental modeling [abstract]. ASA-CSSA-SSSA International Meeting, October 16-19, 2011, San Antonio, Texas. 259-6.

Sensor-based nitrogen applications out-performed producer-chosen rates for corn in on-farm demonstrations - (Abstract Only)

Scharf, P., Shannon, K., Sudduth, K.A., Kitchen, N.R. 2011. Sensor-based nitrogen applications out-performed producer-chosen rates for corn in on-farm demonstrations [abstract]. ASA-CSSA-SSSA Annual International Meeting, October 16-19, 2011, San Antonio, Texas. 358-10.

Peak functions for modeling high resolution soil profile data

- (Peer Reviewed Journal)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Miles, R.J., Sadler, E.J., Grunwald, S. 2011. Peak functions for modeling high resolution soil profile data. Geoderma. 166(1):74-83. DOI:10.1016/j.geoderma.2011.07.014.

Estimation of soil quality characteristics using reflectance spectroscopy - (Proceedings)

Sheridan, A.H., Sudduth, K.A., Kitchen, N.R., Kremer, R.J. 2011. Estimation of soil quality characteristics using reflectance spectroscopy. ASABE Annual International Meeting, August 7-10, 2011, Louisville, Kentucky. Paper No. 1111544.

New methods for automatic delay time compensation in grain yield maps - (Proceedings)

Lee, D., Sudduth, K.A., Drummond, S.T., Chung, S., Myers, D.B. 2011. New methods for automatic delay time compensation in grain yield maps. ASABE Annual International Meeting, August 7-10, 2011, Louisville, Kentucky. Paper No. 1111626.

Mapping Conductivity-Depth Relationships by Combining Proximal and Penetrating ECa Sensors - (Proceedings)

Sudduth, K.A., Myers, D.B., Kitchen, N.R., Drummond, S.T. 2011. Mapping Conductivity-Depth Relationships by Combining Proximal and Penetrating ECa Sensors. In: Adamchuk, V.I., Viscarra, R.A., editors. Proceedings of the 2nd Global Workshp on Proximal Soil Sensing, May 15-18, 2011, Montreal, Canada. pp. 32-35.

Proximal soil sensing: an effective approach for soil measurements in space and time - (Review Article)

Viscarra Rossel, R.A., Adamchuk, V.I., Sudduth, K.A., Mckenzie, N.J., Lobsey, C. 2011. Proximal soil sensing: an effective approach for soil measurements in space and time. Advances in Agronomy. 113:237-282.

Estimation of Korean paddy field soil properties using optical reflectance - (Peer Reviewed Journal)

Chung, S., Jung, K., Sudduth, K.A. 2011. Estimation of Korean paddy field soil properties using optical reflectance. Journal of Biosystems Engineering. 36(1):33-40.

Sensor fusion for precision agriculture - (Book / Chapter)

Adamchuk, V.I., Viscarra Rossel, R.A., Sudduth, K.A., Schulze Lammers, P. 2011. Sensor fusion for precision agriculture. In: Thomas, C., editor. Sensor Fusion - Foundation and Applications. Croatia:In-Tech. p. 27-40.

Assessing the impact of long-term cultivation on runoff, pollutant load, and crop yields - (Abstract Only) - (10-Mar-11)

Mapping the soil health of agricultural fields via soil electrical conductivity - (Trade Journal)

Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Myers, D.B. 2011. Mapping the soil health of agricultural fields via soil electrical conductivity. Fast Times: News for the Near Surface Geophysical Sciences. 15(4):41-47.

Determination of representative elementary areas for soil redoximorphic features by digital image processing - (Peer Reviewed Journal)

O'Donnell, T.K., Goyne, K.W., Miles, R.J., Baffaut, C., Anderson, S.H., Sudduth, K.A. 2011. Determination of representative elementary areas for soil redoximorphic features by digital image processing. Geoderma. 161:138-146.

What do you do when your N-rich reference fails? - (Proceedings)

Kitchen, N.R., Sudduth, K.A., Drummond, S.T., Sheridan, A.H. 2010. What do you do when your N-rich reference fails?. In: Proceddings of North Central Extension Industry Soil Fertility Conference, November 17-18, 2010, Des Moines, Iowa. p. 52-59.

Herbicide transport in Goodwater Creek experimental watershed: I. long-term research on atrazine - (Peer Reviewed Journal)

Lerch, R.N., Sadler, E.J., Sudduth, K.A., Baffaut, C., Kitchen, N.R. 2010. Herbicide transport in Goodwater Creek experimental watershed: I. long-term research on atrazine. Journal of the American Water Resources Association. 47(2):209-223.

Herbicide transport trends in Goodwater Creek experimental watershed II: acetochlor, alachlor, metolachlor, and metribuzin - (Peer Reviewed Journal)

Lerch, R.N., Sadler, E.J., Baffaut, C., Kitchen, N.R., Sudduth, K.A. 2010. Herbicide transport trends in Goodwater Creek experimental watershed II: acetochlor, alachlor, metolachlor, and metribuzin. Journal of the American Water Resources Association. 47(2):224-238.

Variable Rate Irrigation Management for Humid Climates Using a Conventional Center Pivot System - (Proceedings)

Thompson, A.L., Sudduth, K.A., Henggeler, J.C., Vories, E.D., Rackers, A.D. 2010. Variable Rate Irrigation Management for Humid Climates Using a Conventional Center Pivot System. Decennial National Irrigation Symposium, December 5-8, 2010, Phoenix, Arizona. IRR10-9849.

Soil texture classification algorithm using RGB characteristics of soil images - (Proceedings)

Chung, S., Cho, K., Kong, J., Sudduth, K.A., Jung, K. 2010. Soil texture classification algorithm using RGB characteristics of soil images. In: Proc Third IFAC International Conf. on Agricontrol. December 6-8, 2010, Kyoto, Japan. Available: http://www.ifac-papersonline.net/ersonline.net/.

Assessing Production and Ecosystem Function for Grain and Bioenergy Feedstock Crops Across Variable Soil Landscapes - (Abstract Only)

Kitchen, N.R., Sudduth, K.A., Sadler, E.J., Kremer, R.J., Baffaut, C., Myers, D.B., Lerch, R.N. 2010. Assessing Production and Ecosystem Function for Grain and Bioenergy Feedstock Crops Across Variable Soil Landscapes [abstract]. 2010 Soil and Water Conservation Society's Sustainable Feedstocks for Advanced Biofuels Workshop Final Program & Abstract Book. p. 28-29.

Analyzing Landscape Effects on Corn and Soybean Yield and Yield Risk from a Large Yield Monitor Dataset - (Abstract Only)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Tracy, P., Sadler, E.J., Young, F. 2011. Analyzing Landscape Effects on Corn and Soybean Yield and Yield Risk from a Large Yield Monitor Dataset [abstract]. ASA-CSSA-SSSA 2010 International Meeting, October 31-November 4, 2010. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 177-8.

A Cumulative Vulnerability Index to Account for Interactions of Hydrology, Timing of Application, and Dissipation Kinetics in Annual Atrazine Transport - (Abstract Only)

Sadler, E.J., Lerch, R.N., Baffaut, C., Sudduth, K.A. 2010. A Cumulative Vulnerability Index to Account for Interactions of Hydrology, Timing of Application, and Dissipation Kinetics in Annual Atrazine Transport [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeeting. Oct. 31-Nov. 4, 2010, Long Beach, CA. 2010 CD-ROM.

Comparison of Three Canopy Reflectance Sensors for Variable-Rate Nitrogen Application in Corn - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Drummond, S.T. 2010. Comparison of Three Canopy Reflectance Sensors for Variable-Rate Nitrogen Application in Corn. In: Proceedings of the 10th International Conference on Precision Agriculture, 18-21 July, 2010. Denver, Colorado. 2010 CDROM.

Is a Nitrogen-rich Reference Needed for Canopy Sensor-based Corn Nitrogen Applications? - (Proceedings)

Kitchen, N.R., Sudduth, K.A., Drummond, S.T. 2010. Is a Nitrogen-rich Reference Needed for Canopy Sensor-based Corn Nitrogen Applications?. International Conference on Precision Agriculture Abstracts & Proceedings. Available: http://www.icpaonline.org/finalpdf/abstract_213.pdf

Nitrogen Loss in Corn Production Varies as a Function of Topsoil Depth - (Proceedings)

Allphin, E.B., Kitchen, N.R., Sudduth, K.A., Thompson, A.L. 2010. Nitrogen Loss in Corn Production Varies as a Function of Topsoil Depth. 10th International Conference on Precision Agriculture, July 18-21, 2010, Denver, Colorado. 2010 CDROM.

Canopy Reflectance Sensing as Impacted by Corn Hybrid Growth - (Proceedings)

Sheridan, A.H., Kitchen, N.R., Sudduth, K.A. 2010. Canopy Reflectance Sensing as Impacted by Corn Hybrid Growth. In: 10th International Conference on Precision Agriculture, July 18-21, Denver, Colorado. Available: http://www.icpaonline.org/finalpdf/abstract_213.pdf.

Laboratory Evaluation of Ion-Selective Electrodes for Simultaneous Analysis of Macronutrients in Hydroponic Solution - (Proceedings)

Kim, H.J., Son, D.W., Kim, Y., Park, D.S., Sudduth, K.A. 2010. Laboratory Evaluation of Ion-Selective Electrodes for Simultaneous Analysis of Macronutrients in Hydroponic Solution. In: Proceedings of the 10th International Conference on Precision Agriculture, July 18-21, 2010, Denver, Colorado. 2010 CDROM.

Calibration Methods for Soil Property Estimation Using Reflectance Spectroscopy - (Peer Reviewed Journal)

Lee, K., Sudduth, K.A., Drummond, S.T., Lee, D., Kitchen, N.R., Chung, S. 2010. Calibration Methods for Soil Property Estimation Using Reflectance Spectroscopy. Transactions of the ASABE. 53(3):675-684.

Site-Specific Compaction, Soil Physical Property, and Crop Yield Relationships for Claypan Soils - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Chung, S., Drummond, S.T. 2010. Site-Specific Compaction, Soil Physical Property, and Crop Yield Relationships for Claypan Soils. ASABE Annual International Meeting, June 20-June 23, 2010, Pittsburgh, Pennsylvania. Paper No. 1009432.

Estimating depth to argillic soil horizons using apparent electrical conductivity - (Peer Reviewed Journal)

Sudduth, K.A., Kitchen, N.R., Myers, D.B., Drummond, S.T. 2010. Estimating depth to argillic soil horizons using apparent electrical conductivity. Journal of Environmental & Engineering Geophysics. 15(3):135-146.

Precision Nitrogen Fertilizer Management of Maize and Cotton Using Crop Sensors - (Proceedings)

Scharf, P., Kitchen, N.R., Sudduth, K.A., Lory, J., Stevens, G.W., Oliveira, L., Shannon, M., Palm, H., Davis, G.J., Vories, E.D., Dunn, D. 2010. Precision Nitrogen Fertilizer Management of Maize and Cotton Using Crop Sensors. In: Proceedings of the 19th World Congress of Soil Science, August 1- 6, 2010, Brisbane, Australia. p.29-32.

Identification and Quantification Soil Redoximorphic Features by Digital Image Processing - (Peer Reviewed Journal)

O'Donnell, T.K., Goyne, K.W., Miles, R.J., Baffaut, C., Anderson, S.H., Sudduth, K.A. 2010. Identification and Quantification Soil Redoximorphic Features by Digital Image Processing. Geoderma. 157(2010):86-96

Can APEX Represent In-Field Spatial Variability and Simulate Its Effects On Crop Yields? - (Abstract Only)

Baffaut, C., Sadler, E.J., Mugdal, A., Steven, A.H., Sudduth, K.A., Kitchen, N.R. 2011. Can APEX Represent In-Field Spatial Variability and Simulate Its Effects On Crop Yields? [abstract]. ASABE Annual International Meeting, August 8-10, 2012, Louisville, Kentucky. 1111424.

APEX Simulations of Productivity for 9 Cropping Systems over 19 Years in 3 Claypan Landscape Positions - (Abstract Only)

Sadler, E.J., Baffaut, C., Kitchen, N.R., Sudduth, K.A., Mudgal, A. 2010. APEX Simulations of Productivity for 9 Cropping Systems over 19 Years in 3 Claypan Landscape Positions [abstract]. Soil and Water Conservation Society Annual Conference, July 18-21, 2010, St. Louis, Missouri. Available: http://www.swcs.org/documents/filelibrary/10ac/2010_Oral_Presentation_Abstracts_566DF5164F928.pdf.

Staking Terraces Online: A Terrace Layout Program - (Abstract Only)

Bay, M.K., Thompson, A., Gantzer, C., Sudduth, K.A. 2010. Staking Terraces Online: A Terrace Layout Program. Soil and Water Conservation Society [abstract]. Soil and Water Conservation Society Annual Conference, July 18-21, 2010, St. Louis, MO. 2010 CD-ROM.

Economic and environmental implications of sensor-based N management - (Trade Journal)

Roberts, D.F., Kitchen, N.R., Sudduth, K.A., Drummond, S.T., Scharf, P.C. 2010. Economic and Environmental Implications of Sensor-based N Management. Better Crops With Plant Food. XCIV (94):4-6.

Effects of Long-term Soil and Crop Management on Soil Hydraulic Properties for Claypan Soils - (Abstract Only)

Mudgal, A., Anderson, S.H., Baffaut, C., Kitchen, N.R., Sudduth, K.A., Sadler, E.J. 2009. Effects of Long-term Soil and Crop Management on Soil Hydraulic Properties for Claypan Soils [abstract]. USDA-CSREES National Water Quality Conference, February 8-12, 2009, St Louis, Missouri. Available: http://www.usawaterquality.org/conferences/2009/ceap/html.

What are the Benefits of Canopy Sensing for Variable-Rate Nitrogen Corn Fertilization? - (Proceedings)

Kitchen, N.R., Roberts, D.F., Sudduth, K.A., Drummond, S.T., Scharf, P.C. 2009. What are the Benefits of Canopy Sensing for Variable-Rate Nitrogen Corn Fertilization?. North Central Extension Industry Soil Fertility Conference Proceedings. 25:173-180.

Soil Compaction Varies by Crop Management System over a Claypan Soil Landscape - (Peer Reviewed Journal)

Jung, K., Kitchen, N.R., Sudduth, K.A., Lee, K., Chung, S. 2009. Soil Compaction Varies by Crop Management System over a Claypan Soil Landscape. Soil and Tillage Research. 107:1-10.

Herbicide Transport to Surface Runoff from a Claypan Soil: Scaling from Plots to Fields - (Peer Reviewed Journal)

Ghidey, F., Baffaut, C., Lerch, R.N., Kitchen, N.R., Sadler, E.J., Sudduth, K.A. 2010. Herbicide Transport to Surface Runoff from a Claypan Soil: Scaling from Plots to Fields. Journal of Soil and Water Conservation. 65(3):168-179.

Watershed-Scale Crop Type Classification using Seasonal Trends in Remote Sensing-Derived Vegetation Indices - (Peer Reviewed Journal)

Jang, G.S., Sudduth, K.A., Sadler, E.J., Lerch, R.N. 2009. Watershed-Scale Crop Type Classification using Seasonal Trends in Remote Sensing-Derived Vegetation Indices. Transactions of the ASABE. 52(2):1535-1544.

Geophysical Sensing Applications on Claypan Soils - (Abstract Only)

Sudduth, K.A., Kitchen, N.R., Myers, D.B., Drummond, S.T. 2009. Geophysical Sensing Applications on Claypan Soils [abstract]. In. Proceedings of Bouyoucos Conference for the Advancement of Geophysical Technologies Applied to Agroecosystems.

The Influence of Sun Position and Clouds on Reflectance and Vegetation Indices of Greenhouse-Grown Corn - (Peer Reviewed Journal)

Souza, E.G., Scharf, P.C., Sudduth, K.A. 2010. The Influence of Sun Position and Clouds on Reflectance and Vegetation Indices of Greenhouse-Grown Corn. Agronomy Journal. 102:734-744.

SWAT Development for Simulating Flow and Pesticide Movement in a Large Claypan Watershed - (Abstract Only)

Baffaut, C., Sadler, E.J., Lerch, R.N., Kitchen, N.R., Sudduth, K.A. 2009. SWAT Development for Simulating Flow and Pesticide Movement in a Large Claypan Watershed [abstract]. In: 5th Annual International Soil and Water Assessment Tool Conference, August 5-7, 2009, Boulder, Colorado. p. 123.

Sensor-based mapping of soil quality on degraded claypan landscapes of the central United States - (Book / Chapter)

Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Myers, D.B. 2010. Sensor-based mapping of soil quality on degraded claypan landscapes of the central United States. In: Viscarra Rossel, R. A., McBratney, Alex B., and Minasny, B. Proximal Soil Sensing, Volume 1. New York: Springer. p. 363-373.

Soil Macronutrient Sensing for Precision Agriculture - (Review Article)

Kim, H.J., Sudduth, K.A., Hummel, J.W. 2009. Soil Macronutrient Sensing for Precision Agriculture. Journal of Environmental Monitoring. 11:1810-1824.

Terrace Layout Using a Computer Assisted System - (Abstract Only)

Golden, M.K., Thompson, A.L., Gantzer, C.J., Sudduth, K.A., Mayhan, B.D. 2009. Terrace Layout Using a Computer Assisted System [abstratct]. Soil and Water Conservation Annual Conference, July 11-15, 2009, Dearborn, Michigan. p. 77.

Narrowing the Soil-Sample to Fertilizer-Application Gap Using Soil Sensors - (Abstract Only)

Kitchen, N.R., Adamchuk, V.I., Sudduth, K.A. 2009. Narrowing the Soil-Sample to Fertilizer-Application Gap Using Soil Sensors [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts November 1-5, 2009, Pittsburgh, Pennsylvania.

Crop Sensors to Control Variable-Rate N Applications: Five Years of On-Farm Demonstrations - (Abstract Only)

Scharf, P., Shannon, K., Palm, H., Sudduth, K.A., Kitchen, N.R., Drummond, S.T. 2009. Crop Sensors to Control Variable-Rate N Applications: Five Years of On-Farm Demonstrations [abstract]. ASA-CSSA-SSSA Annual Conference, November 1-5, 2009, Pittsburgh, Pennsylvania. 09:55775

Fertilizer Input Costs: Perceptions and Strategies - (Abstract Only)

Scharf, P., Massey, R.E., Abendroth, J., Kitchen, N.R., Sudduth, K.A. 2009. Fertilizer Input Costs: Perceptions and Strategies [abstract]. ASA-CSSA-SSSA Annual Conference, November 1-5, 2009, Pittsburgh, Pennsylvania. 09:54818.

Representative Elementary Area Determinations through Digital Photography, Image Analysis, and Soil Color - (Abstract Only)

O'Donnell, K.T., Goyne, K.W., Baffaut, C., Anderson, S.H., Miles, R.J., Sudduth, K.A. 2009. Representative Elementary Area Determinations through Digital Photography, Image Analysis, and Soil Color [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 53891.

Quantification of Soil Redoximorphic Features by Standardized Color Identification - (Abstract Only)

O'Donnell, K.T., Goyne, K.W., Baffaut, C., Anderson, S.H., Miles, R.J., Sudduth, K.A. 2009. Quantification of Soil Redoximorphic Features by Standardized Color Identification. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 53929.

Wavelength Identification and Diffuse Reflectance Estimation for Surface and Profile Soil Properties - (Peer Reviewed Journal)

Lee, K.S., Lee, D.H., Sudduth, K.A., Chung, S.O., Kitchen, N.R., Drummond, S.T. 2009. Wavelength Identification and Diffuse Reflectance Estimation for Surface and Profile Soil Properties. Transactions of the ASABE. 52(3):683-695.

Ground-Based Canopy Reflectance Sensing for Variable-Rate Nitrogen Corn Fertilization - (Peer Reviewed Journal)

Kitchen, N.R., Sudduth, K.A., Drummond, S.T., Scharf, P.C., Palm, H.L., Roberts, D.F., Vories, E.D. 2010. Ground-Based Canopy Reflectance Sensing for Variable-Rate Nitrogen Corn Fertilization. Agronomy Journal. 102:71-84.

Will Variable-Rate Nitrogen Fertilization Using Corn Canopy Reflectance Sensing Deliver Environmental Benefits? - (Peer Reviewed Journal)

Roberts, D.F., Kitchen, N.R., Scharf, P.C., Sudduth, K.A. 2010. Will Variable-Rate Nitrogen Fertilization Using Corn Canopy Reflectance Sensing Deliver Environmental Benefits? Agronomy Journal. 102:85-95.

Environmental Implications of Increased Bioenergy Production on Midwest Soil Landscapes - (Proceedings)

Kitchen, N.R., Sudduth, K.A., Sadler, E.J., Kremer, R.J., Baffaut, C., Myers, D.B. 2009. Environmental Implications of Increased Bioenergy Production on Midwest Soil Landscapes. In: Proceedings of the University of Missouri Energy Summit, April 22-23, 2009, Columbia, Missouri. p. 180-185.

Nitrogen: the key to biofuel energy balance - (Abstract Only)

Scharf, P.C., Palm, H., Kitchen, N.R., Sudduth, K.A. 2009. Nitrogen: the key to biofuel energy balance [abstract]. University of Missouri Energy Summit, April 22-23, 2009, Columbia, Missouri. p. 161.

Combining Proximal and Penetrating Soil Electrical Conductivity Sensors for High Resolution Digital Soil Mapping - (Book / Chapter)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Grunwald, S., Miles, R.J., Sadler, E.J., Udawatta, R. 2010. Combining Proximal and Penetrating Soil Electrical Conductivity Sensors for High Resolution Digital Soil Mapping. In: Viscarra Rossel, R. A., McBratney, Alex B., and Minasny, B. Proximal Soil Sensing, Volume 1. New York: Springer. p. 233-243.

Economic and Environmental Benefits of Canopy Sensing for Variable-Rate Nitrogen Corn Fertilization - (Proceedings)

Kitchen, N.R., Shanahan, J.F., Roberts, D.F., Sudduth, K.A., Scharf, P.C., Ferguson, R.B., Adamchuk, V. 2009. Economic and Environmental Benefits of Canopy Sensing for Variable-Rate Nitrogen Corn Fertilization. In: Proceedings of the American Society of Agricultural and Biological Engineers Annual International Meeting, June 21-24, 2009, Reno, Nevada. Available: http://asae.frymulti.com/abstract.asp?aid=27259&t=1.

Estimating depth to argillic soil horizons using apparent electrical conductivity response functions - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Myers, D.B., Drummond, S.T. 2009. Estimating depth to argillic soil horizons using apparent electrical conductivity response functions. In Proc. 22nd Symposium on the Application of Geophysics to Engineering and Environmental Problems, March 29-April 2, 2009, Ft. Worth, Texas, CD-ROM.

Estimating Depth to Argillic Soil Horizons using Apparent Electrical Conductivity Response Functions - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Myers, D.B., Drummond, S.T. 2009. Estimating Depth to Argillic Soil Horizons using Apparent Electrical Conductivity Response Functions. In: Proceedings of 22nd Symposium on Application of Geophysics to Engineering and Environmental Problems. p. 840-849

Improved Canopy Sensor-based Corn Nitrogen Recommendations Using Auxiliary Information - (Abstract Only) - (02-Dec-08)

Preprocessing and calibration of optical diffuse reflectance signal for estimation of soil physical and chemical properties in the central USA - (Peer Reviewed Journal)

La, W.J., Sudduth, K.A., Chung, S., Kim, H.J. 2008. Preprocessing and calibration of optical diffuse reflectance estimation of soil physical and chemical properties in the central USA. Journal of Biosystems Engineering. 33(6):430-437.

VNIR Spectroscopy Estimation of Soil Quality Indicators - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Kremer, R.J. 2009. VNIR Spectroscopy Estimation of Soil Quality Indicators. ASABE Annual International Meeting Technical Papers. ASABE, St. Joseph, Michigan. Paper No. 097019. Available: http://asae.frymulti.com/azdez.asp?search =1&JID=5&AID=27285&CID=reno2009&v=&i=&T=1

On-the-go mapping of soil mechanical resistance using a linear depth effect model. - (Peer Reviewed Journal)

Adamchuk, V.I., Ingram, T.J., Sudduth, K.A., Chung, S. 2008. On-the-go mapping of soil mechanical resistance using a linear depth effect model. Transactions of the ASABE. 51(6):1885-1894.

VNIR Spectroscopy estimates of within-field variability in soil properties - (Book / Chapter)

Sudduth, K.A., Kitchen, N.R., Sadler, E.J., Drummond, S.T., Myers, D.B. 2010. VNIR Spectroscopy estimates of within-field variability in soil properties. Book Chapter. In: Viscarra Rossel, R. A., McBratney, Alex B., and Minasny, B. Proximal Soil Sensing, Volume 1. New York: Springer. p. 153-163.

SPECTRAL ANALYSIS OF ON-THE-GO SOIL STRENGTH SENSOR DATA - (Peer Reviewed Journal)

Chung, S.O., Sudduth, K.A., Tan, J. 2008. Spectral analysis of on-the-go soil strength sensor data. Journal of Biosystems Engineering. 33(5):355-361.

Analysis of Spatial Variability in a Korean Paddy Field Using Median Polish Detrending - (Peer Reviewed Journal)

Chung, S.O., Jung, I.K., Sung, J.H., Sudduth, K.A., Drummond, S.T. 2008. Analysis of Spatial Variability in a Korean Paddy Field Using Median Polish Detrending. Journal of Biosystems Engineering. 33(5):362-369.

Herbicide Transport Trends in Goodwater Creek Experimental Watershed - (Abstract Only)

Lerch, R.N., Sadler, E.J., Sudduth, K.A., Baffaut, C. 2009. Herbicide Transport Trends in Goodwater Creek Experimental Watershed [abstract]. In: Interagency Conference on Research in the Watersheds, September 8-11, 2008, Estes Park, Colorado. p. 261.

SAMPLING AND CALIBRATION REQUIREMENTS FOR OPTICAL REFLECTANCE SOIL PROPERTY SENSORS FOR KOREAN PADDY SOILS - (Peer Reviewed Journal)

Lee, K.S., Lee, D.H., Jung, I.K., Chung, S.O., Sudduth, K.A. 2008. Sampling and calibration requirements for optical reflectance soil property sensors for Korean paddy soils. Journal of Biosystems Engineering. 33(4):260-268.

Contrasting grain crop and grassland management effects on soil quality properties for a North-Central Missouri claypan soil landscape. - (Peer Reviewed Journal)

Jung, W.K., Kitchen, N.R., Sudduth, K.A., Kremer, R.J. 2008. Contrasting grain crop and grassland management effects on soil quality properties for a North-Central Missouri claypan soil landscape. Soil Science and Plant Nutrition. 54(6):960-971.

Trend Analyses of Atrazine Transport in Goodwater Creek Experimental Watershed - (Abstract Only)

Sadler, E.J., Lerch, R.N., Sudduth, K.A., Baffaut, C. 2008. Trend Analyses of Atrazine Transport in Goodwater Creek Experimental Watershed [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting. October 5-9, 2008, Houston, TX.

New Methods for Identifying and Quantifying Soil Redoximorphic Features - (Abstract Only)

Odonnell, T.K., Goyne, K.W., Baffaut, C., Anderson, S.H., Miles, R.J., Sudduth, K.A. 2008. New Methods for Identifying and Quantifying Soil Redoximorphic Features [abstract]. Joint Annual Meeting of the GSA, ASA-CSSA-SSSA, and GCAGS, October 5-9, 2008, Houston, Texas. p. 79-4.

Bayesian Analysis of Within-Field Variability of Corn Yield Using a Spatial Hierarchical Model - (Peer Reviewed Journal)

Jiang, P., He, Z., Kitchen, N.R., Sudduth, K.A. 2009. Bayesian Analysis of Within-Field Variability of Corn Yield Using a Spatial Hierarchical Model. Precision Agriculture. 10(2):111–127.

Using Precision Agriculture Methods to Predict Soil Suitability for Rainfed Corn Production - (Proceedings)

Vories, E., Kitchen, N., Sudduth, K., Sadler, E., Griffin, T., Stevens, G., Dunn, D. 2008. Using precision agriculture methods to predict soil suitability for rainfed corn production. In: ASABE Annual International Meeting Technical Papers. American Society for Agricultural and Biological Engineers International Meeting, June 28-July 2, 2008, Providence, Rhode Island. Paper No. 084437.

Components of an Optimal Algorithm For Canopy-Sensed Corn Nitrogen Rate - (Abstract Only)

Kitchen, N.R., Sudduth, K.A., Drummond, S.T., Scharf, P.C., Palm, H., Shannon, K.D., Vories, E.D. 2008. Components of an Optimal Algorithm For Canopy-Sensed Corn Nitrogen Rate [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting. October 5-9, 2008, Houston, TX. Paper No. 084437.

THE ARS-MISSOURI SOIL STRENGTH PROFILE SENSOR: CURRENT STATUS AND FUTURE PROSPECTS - (Proceedings)

Sudduth, K.A., Chung, S.O., 2008. The ARS-Missouri soil strength profile sensor: current status and future prospects. In: ASABE Annual International Meeting Technical Papers. American Society of Agricultural and Biological Engineers Annual International Meeting, June 29-July 2, 2008, Providence, Rhode Island. Paper No. 083782.

ESTIMATION OF KOREAN PADDY FIELD SOIL PROPERTIES USING OPTICAL REFLECTANCE - (Proceedings)

Chung, S., Sudduth, K.A., Jung, I., Hong, Y., Jung, K. 2008. Estimation of korean paddy field soil properties using optical reflectance. In: ASABE Annual International Meeting Techinical Papers. American Society of Agricultural and Biological Engineers Annual International Meeting, June 29-July 2, 2008, Providence, Rhode Island. Paper No. 083682.

Spectral Reflectance Estimates of Surface Soil Physical and Chemical Properties - (Proceedings)

La, W., Sudduth, K.A., Chung, S., Kim, H. 2008. Spectral Reflectance Estimates of Surface Soil Physical and Chemical Properties. In: ASABE Annual International Meeting Technical Papers. American Society of Agricultural and Biological Engineers Annual International Meeting. June 29-July 2, 2008, Providence, Rhode Island. Paper No. 084242.

DEVELOPMENT OF A WALKING-TYPE DIGITAL CONE PENETROMETER - (Proceedings)

Chung, S.O., Jung, I.K., Hong, Y.K., Jung, K.Y., Sudduth, K.A. 2008. Development of a walking-type digital cone penetrometer. In. Proceedings of the International Symposium on Machinery and Mechatronics for Agricultural and Biosystems Engineering (ISMAB), May 27-29, 2008, Taichung, Taiwan. 2008 CDROM.

ASSESSING INTRA- AND INTER-FIELD VARIABILITY OF CORN NITROGEN FERTILIZER NEED USING GROUND-BASED REFLECTANCE SENSORS - (Proceedings)

Kitchen, N.R., Sudduth, K.A., Drummond, S.T., Scharf, P.C., Palm, H.L., Shannon, D.K. 2008. Assessing intra- and inter-field variability of corn nitrogen fertilizer need using ground-based reflectance sensors. In. Proceedings of the 9th International Conference on Precision Agriculture. 9th International Conference on Precision Agriculture, July 20-23, 2008, Denver, Colorado. 2008 CDROM.

SOIL ELECTRICAL CONDUCTIVITY AS A MANAGEMENT TOOL IN PRECISION FORESTRY - (Proceedings)

Palm, H.L., Stelzer, H.E., Sudduth, K.A., Kitchen, N.R., Drummond, S.T. 2008. Soil electrical conductivity as a management tool in precision forestry. In. Proceedings of the 9th International Conference on Precision Agriculture, July 20-23, 2008, Denver, Colorado. 2008 CDROM.

Multi-Sensor Estimation of Claypan Soil Profile Properties - (Abstract Only)

Myers, D.B., Miles, R.J., Kitchen, N.R., Sudduth, K.A., Sadler, E.J., Grunwald, S. 2008. Multi-Sensor Estimation of Claypan Soil Profile Properties [abstract]. In: 9th International Conference on Precision Agriculture Conference Abstracts. 9th International Conference on Precision Agriculture, July 20-23, 2008, Denver, Colorado. p. 200.

Development of a Motorized Digital Cone Penetrometer - (Proceedings)

Chung, S.O., Jung, I.K., Hong, Y.K., Jung, K.Y., Sudduth, K.A. 2008. Development of a Motorized Digital Cone Penetrometer. In. Proceedings of the 9th International Conference on Precision Agriculture, July 20-23, 2008, Denver, Colorado. 2008 CDROM.

Sampling and Calibration Requirements for Soil Property Estimation Using Reflectance Spectroscopy - (Proceedings)

Lee, K., Lee, D., Sudduth, K.A., Chung, S., Kitchen, N.R., Drummond, S.T. 2008. Sampling and Calibration Requirements for Soil Property Estimation Using Reflectance Spectroscopy. In: ASABE Annual International Meeting Technical Papers. American Society of Agricultural and Biological Engineers Annual International Meeting, June 29-July 2, 2008, Providence, Rhode Island. Paper No. 084037.

Helping Growers to Demo Nitrogen Sensors - (Abstract Only)

Scharf, P.C., Shannon, D.K., Palm, H.L., Sudduth, K.A., Drummond, S.T., Kitchen, N.R. 2008. Helping Growers to Demo Nitrogen Sensors [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual International Meeting. October 5-9, 2008, Houston, TX.

Managing N with Sensors: Some Practical Issues - (Proceedings)

Scharf, P., Oliveira, L., Vories, E.D., Stevens, G., Dunn, D., Sudduth, K.A. 2008. Managing N with Sensors: Some Practical Issues. Proceedings of the National Beltwide Cotton Conference, January 8-11, 2008, Nashville, Tennessee. 1585-1588.

VNIR SPECTROSCOPY FOR ESTIMATION OF WITHIN-FIELD VARIABILITY IN SOIL PROPERTIES - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Sadler, E.J., Drummond, S.T., Myers, D.B. 2008. VNIR spectroscopy for estimation of within-field variability in soil properties. In: Proceedings of the First Global Worshop on High Resolution Digital Soil Sensing and Mapping. February 5-8, 2008. Sydney, Australia. 2008 CDROM

SENSOR-BASED MAPPING OF SOIL QUALITY ON DEGRADED EPIAQUALF LANDSCAPES - (Proceedings)

Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Brent, M.D. 2008. Sensor-based mapping of soil quality on degraded epiaqualf landscapes. In: Proc. First Global Worshop on High Resolution Digital Soil Sensing and Mapping. February 5-8, Sydney, Australia [CDROM]. IUSS Working Group on Digital Soil Mapping. 2008.

SOIL BIN AND FIELD TESTS OF AN ON-THE-GO SOIL STRENGTH PROFILE SENSOR - (Peer Reviewed Journal)

Chung, S.O., Sudduth, K.A., Plouffe, C., Kitchen, N.R. 2008. Soil bin and field tests of an on-the-go soil strength profile sensor. Transactions of the ASABE. 51(1):5-18.

COMBINING PROXIMAL AND PENETRATING CONDUCTIVITY SENSORS FOR HIGH RESOLUTION SOIL MAPPING - (Proceedings)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Grunwald, S., Miles, R.J., Sadler, E.J., and Udawatta, R. 2008. Combining proximal and penetrating conductivity sensors for high resolution soil mapping. In: Proceedings of the First Global Workshop on High Resolution Digital Soil Sensing and Mapping, February 5-8, Sydney, Austrailia. 2008 CDROM.

ESTIMATING PLANT-AVAILABLE WATER USING THE SIMPLE INVERSE YIELD MODEL FOR CLAYPAN LANDSCAPES - (Peer Reviewed Journal)

Jiang, P., Kitchen, N.R., Anderson, S.H., Sudduth, K.A., Sadler, E.J. 2008. Estimating plant-available water using the simple inverse yield model for claypan landscapes. Agronomy Journal. 100:830-836.

OVERVIEW OF THE MARK TWAIN LAKE/SALT RIVER BASIN CONSERVATION EFFECTS ASSESSMENT PROJECT - (Peer Reviewed Journal)

Lerch, R.N., Sadler, E.J., Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Myers, D.B., Baffaut, C., Anderson, S.A., Lin, C. 2008. Overview of the Mark Twain Lake/Salt River basin Conservation Effects Assessment Project. Journal of Soil and Water Conservation. 63(6):345-359.

MODEL TESTING IN PRECISION AGRICULTURE – COMPARING MEASURES OF VARIATION - (Abstract Only)

Sadler, E.J., Sudduth, K.A., Braga, R., Paz, J., Jones, J. 2007. Model testing in precision agriculture – comparing measures of variation. ASA-CSSA-SSSA Annual Meeting [abstract]. ASA-CSSA-SSSA Annual Internation Meeting, November 4-8, 2007, New Orleans, Louisiana. p.285-19.

SEPARATING SPATIAL AND TEMPORAL SOURCES OF VARIATION FOR MODEL TESTING IN PRECISION AGRICULTURE - (Peer Reviewed Journal)

Sadler, E.J., Sudduth, K.A., Jones, J.W. 2008. Separating spatial and temporal sources of variation for model testing in precision agriculture. Precision Agriculture. 8:297-310.

SAMPLING AND CALIBRATION REQUIREMENTS FOR SOIL PROPERTY ESTIMATION USING NIR SPECTROSCOPY - (Abstract Only)

Lee, K., Lee, D., Sudduth, K.A., Chung, S. 2007. Sampling and calibration requirements for soil property estimation using NIR spectroscopy [abstract]. Abstracts of 2nd International Conference on Advanced Nondestructive Evaluation. Paper No. 2007-472.

Precision-Farming Technologies Used to Identify Land Energy Production Capability - (Abstract Only)

Kitchen, N. R., Sudduth, K. A., Myers, D. B. 2007. Precision-Farming Technologies Used to Identify Land Energy Production Capability [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting. Nov. 4-8, 2007, New Orleans, LA. 2007.

Field-Scale N Application Using Crop Reflectance Sensors - (Abstract Only)

Sudduth, K. A., Kitchen, N. R., Scharf, P. C., Palm, H., Shannon, D. K. 2007. Field-Scale N Application Using Crop Reflectance Sensors [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting. Nov. 4-8, 2007, New Orleans, LA. Paper No. 153-7.

Reflectance Sensors: How Stable Are the Values They Measure? - (Abstract Only)

Scharf, P., Sudduth, K.A., Hong, N., Oliveira, L. 2007. Reflectance Sensors: How Stable Are the Values They Measure? [abstract]. ASA-CSSA-SSSA Annual International Meeting, November 4-8, 2007, New Orleans, Louisiana. p. 193-6.

REAL-TIME SENSOR-GUIDED SIDEDRESSING OF CORN: THREE YEARS OF ON-FARM TESTING - (Abstract Only)

Scharf, P.C., Kitchen, N.R., Sudduth, K.A., Palm, H., Shannon, K. 2007. Real-time sensor-guided sidedressing of corn: three years of on-farm testing [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting, Nov. 4-8, 2007, New Orleans, LA. Paper No. 101-8.

Estimating Plant-Available Water Using a Simple Inverse Yield Model for Claypan-Soil Landscapes - (Abstract Only)

Jiang, P., Kitchen, N. R., Anderson, S. H., Sadler, E. J., Sudduth, K. A. 2007. Estimating Plant-Available Water Using a Simple Inverse Yield Model for Claypan-Soil Landscapes [abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. ASA-CSSA-SSSA Annual Meeting. Nov 4-8, 2007, New Orleans, LA. Paper No. 305-3

ALTERNATIVES TO USING A REFERENCE STRIP FOR REFLECTANCE-BASED NITROGEN APPLICATION IN CORN - (Abstract Only) - (23-Jul-07)

Wavelength Selection for Reflectance Estimation of Surface and Subsurface Soil Properties - (Proceedings)

Lee, D., Lee, K., Sudduth, K.A., Chung, S. 2007. Wavelength Selection for Reflectance Estimation of Surface and Subsurface Soil Properties. In: Proceedings 2nd Asian Conference on Precision Agriculture. August 2-4, 2007, Pyeongtaek, Korea. 2007 CDROM.

CURRENT STATUS AND FUTURE DIRECTIONS OF PRECISION AGRICULTURE IN THE USA - (Proceedings)

Sudduth, K.A. 2007. Current status and future directions of precision agriculture in the usa. In: Proceedings 2nd Asian Conference on Precision Agriculture. August 2-4, 2007, Pyeongtaek, Korea. 2007 CDROM.

SOIL PROPERTY ESTIMATION AND VARIABLE TILLAGE RECOMMENDATION USING GEO-REFERENCED CONE INDEX - (Proceedings)

Chung, S.O., Sudduth, K.A. 2007. Soil property estimation and variable tillage recommendation using geo-referenced cone index. In: Proceedings 2nd Asian Conference on Precision Agriculture. August 2-4, 2007 CDROM. Pyeongtaek, Korea.

ION-SELECTIVE ELECTRODES FOR SIMULTANEOUS ANALYSIS OF SOIL MACRONUTRIENTS - (Proceedings)

Kim, H.J., Hummel, J.W., Sudduth, K.A., Motavalli, P.P. 2007. Ion-selective electrodes for simultaneous analysis of soil macronutrients. In: Proceedings 2nd Asian Conference on Precision Agriculture. August 2-4, 2007, Pyeongtaek, Korea. 2007 CDROM.

USING WIRELESS TECHNOLOGY TO REDUCE WATER USE IN RICE PRODUCTION - (Proceedings)

Vories, E. D., D. K. Fisher, P. L. Tacker, and K. A. Sudduth. 2007. Using wireless technology to reduce water use in rice production. Proc. Fourth Int. Conf. on Irrig. and Drain. Denver, Colo.USCID: 471-480 [CDROM].

ESTIMATING PLANT-AVAILABLE WATER CAPACITY FOR CLAYPAN LANDSCAPES USING APPARENT ELECTRICAL CONDUCTIVITY - (Peer Reviewed Journal)

Jiang, P., Anderson, S.H., Kitchen, N.R., Sudduth, K.A., Sadler, E.J. 2007. Estimating plant-available water capacity for claypan landscapes using apparent electrical conductivity. Soil Science Society of America Journal. 71:1902-1908

Profitability Maps as an Input for Site-Specific Management Decision Making - (Peer Reviewed Journal)

Massey, R.E., Myers, D.B., Kitchen, N.R., Sudduth, K.A. 2008. Profitability Maps as an Input for Site-Specific Management Decision Making. Agronomy Journal. 100:52-59.

SIMULTANEOUS ANALYSIS OF SOIL MACRONUTRIENTS USING ION-SELECTIVE ELECTRODES - (Peer Reviewed Journal)

Kim, H.J., Hummel, J., Sudduth, K.A., Motavalli, P.P. 2007. Simultaneous analysis of soil macronutrients using ion-selective electrodes. Soil Science Society of America Journal. 71:1867-1877.

WAVELENGTH IDENTIFICATION FOR REFLECTANCE ESTIMATION OF SURFACE AND SUBSURFACE SOIL PROPERTIES

- (Proceedings)

Lee, K.S., Lee, D.H., Sudduth, K.A., Chung, S.O., Drummond, S.T. 2007. Wavelength identification for reflectance estimation of surface and subsurface soil properties. ASABE Annual International Meeting Technical Papers. ASABE, St. Joseph, MI. Paper No. 071046. Available: http://asae.frymulti.com/request.asp?search=1&JID=5&AID=22894&CID=min2007&v=&i=&T=2.

PRECISION MANAGEMENT SYSTEMS FOR CONSERVATION AND PROFITABILITY - (Proceedings)

Sudduth, K.A., Kitchen, N.R., Sadler, E.J., Kremer, R.J., Lerch, R.N. 2007. Precision management systems for conservation and profitability. Paper No. 071090. ASABE Annual International Meeting Papers. ASABE, St. Joseph, MI. Available: http://asae.frymulti.com/request.asp?search=1&JID=5&AID=22909&CID=min2007&v=&i=&T=2.

APPLICATION OF ION-SELECTIVE ELECTRODES FOR SIMULTANIOUS ANALYSIS OF SOIL MACRONUTRIENTS - (Proceedings)

Kim, H.J., Sudduth, K.A., Hummel, J.W., Drummond, S.T. 2007. Application of ion-selective electrodes for simultanious analysis of soil macronutrients. Paper No. 071004. In: ASABE Annual International Meeting Technical Papers. ASABE, St. Joseph, MI. Available: http://asae.frymulti.com/request.asp?search=1&JID=5&AID=23082&CID=min2007&v=&i=&T=2.

YIELD EDITOR: SOFTWARE FOR REMOVING ERRORS FROM CROP YIELD MAPS - (Peer Reviewed Journal)

Sudduth, K.A., Drummond, S.T. 2007. Yield editor: Software for removing errors from crop yield maps. Agronomy Journal. 99:1471-1482.

EVALUATION OF PHOSPHATE ION-SELECTIVE MEMBRANES AND COBALT-BASED ELECTRODES FOR SOIL NUTRIENT SENSING - (Peer Reviewed Journal)

Kim, H., Hummel, J.W., Sudduth, K.A., Birrell, S.J. 2007. Evaluation of phosphate ion-selective membranes and cobalt-based electrodes for soil nutrient sensing. Transactions of the ASABE. 50(2):415-425.

SOYBEAN ROOT DISTRIBUTION RELATED TO CLAYPAN SOIL PROPERTIES AND APPARENT SOIL ELECTRICAL CONDUCTIVITY - (Peer Reviewed Journal)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Miles, R.J., Sharp, R.E. 2007. Soybean root distribution related to claypan soil properties and apparent soil electrical conductivity. Crop Science. 47:1498-1509.

The Mark Twain Lake/Salt River CEAP Project – Progress and Preliminary Findings - (Abstract Only)

Sadler, E.J., Lerch, R.N., Sudduth, K.A., Kitchen, N.R., Kremer, R.J., Alberts, E.E. 2007. The Mark Twain Lake/Salt River CEAP Project – Progress and Preliminary Findings [abstract]. Soil and Water Conservation Society Annual Conference, July 21-25, 2007, Tampa, Florida.

NEWLY DEVELOPED TECHNOLOGIES FOR SOIL AND WATER CONSERVATION - (Other)

Sadler, E.J., Sudduth, K.A., Kitchen, N.R., Lerch, R.N., Kremer, R.J., Vories, E.D. 2005. Newly Developed Technologies for Soil and Water Conservation, Extension 567, Food & Fertilizer Technology Center, P.O. Box 22-149 Taipei 106, Taiwan ROC. 2005.

Sensing Nitrate and Potassium Ions in Soil Extracts Using Ion-selective Electrodes - (Peer Reviewed Journal)

Kim, H., Sudduth, K.A., Hummel, J.W. 2006. Sensing nitrate and potassium ions in soil extracts using ion-selective electrodes. Journal of Biosystems Engineering. 31(6):463-473.

LANDSCAPE AND CONSERVATION MANAGEMENT EFFECTS ON HYDRAULIC PROPERTIES ON A CLAYPAN-SOIL TOPOSEQUENCE - (Peer Reviewed Journal)

Jiang, P., Anderson, S.H., Kitchen, N.R., Sadler, E.J., Sudduth, K.A. 2007. Landscape and conservation management effects on hydraulic properties on a claypan-soil toposequence. Soil Science Society of America Journal. 71:803-811.

FIELD COMPARISON OF TWO PROTOTYPE SOIL STRENGTH PROFILE SENSORS - (Peer Reviewed Journal)

Sudduth, K.A., Chung, S.O., Andrade-Sanchez, P., Upadhyaya, S.K. 2008. Field comparison of two prototype soil strength profile sensors. Computers and Electronics in Agriculture. 61:20-31.

A QUANTITATIVE PEDOLOGY APPROACH TO CONTINUOUS SOIL LANDSCAPE MODELS - (Abstract Only)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Mayhan, B.D., Miles, R.J., Sadler, E.J. 2006. A quantitative pedology approach to continuous soil landscape models [abstracts]. ASA-CSSA-SSSA Annual Meeting. Paper No. 193-4.

ESTIMATES OF PLANT-AVAILABLE WATER CAPACITY FOR CLAYPAN LANDSCAPES USING SOIL ELECTRICAL CONDUCTIVITY - (Abstract Only)

Jiang, P., Anderson, S.H., Kitchen, N.R., Sudduth, K.A., Sadler, E.J. 2006. Estimates of plant-available water capacity for claypan landscapes using soil electrical conductivity. ASA-CSSA-SSSA Annual Meeting Abstracts.

CAN OPTICAL SENSORS REDUCE FIELD N LOSSES? - (Abstract Only)

Kitchen, N.R., Scharf, P.C., Roberts, D., Sudduth, K.A. 2006. Can optical sensors reduce field N losses?. ASA-CSSA-SSSA Annual Meeting Abstracts.

ECONOMICALLY OPTIMAL NITROGEN RATE REDUCES SOIL RESIDUAL NITRATE - (Abstract Only)

Hong, N., Scharf, P.C., Davis, J.G., Kitchen, N.R., Sudduth, K.A. 2006. Economically optimal nitrogen rate reduces soil residual nitrate. ASA-CSSA-SSSA Annual Meeting Abstracts.

Database Structure for Long-Term Hydrologic Data in the Goodwater Creek Watershed - (Abstract Only)

Sadler, E.J., Lerch, R.N., Sudduth, K.A., Alberts, E.E., Oster, T., Drummond, S.T. 2006. Database Structure for Long-Term Hydrologic Data in the Goodwater Creek Watershed [Abstract]. Managing Agricultural Landscapes for Environmental Quality: Strengthening the Science Base, SWCS, October 11-13, 2006, Kansas City, Missouri. p. 81.

AN ENVIRONMENTAL ASSESSMENT OF SENSOR-BASED VARIABLE-RATE NITROGEN MANAGEMENT IN CORN - (Proceedings)

Roberts, D.R., Kitchen, N.R., Scharf, P.C., Sudduth, K.A. 2006. An environmental assessment of sensor-based variable-rate nitrogen management in corn. North Central Extension Industry Soil Fertility Conference Proceedings.

ECONOMICALLY OPTIMAL NITROGEN RATE REDUCES SOIL RESIDUAL NITRATE - (Peer Reviewed Journal)

Hong, N., Scharf, P.C., Davis, J.G., Kitchen, N.R., Sudduth, K.A. 2007. Economically optimal nitrogen rate reduces soil residual nitrate. Journal of Environmental Quality. 36:354-362

TURNING PRECISION AGRICULTURE INFORMATION INTO PRECISION CONSERVATION DECISIONS - (Abstract Only)

Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Sadler, E.J., Lerch, R.N. 2006. Turning precision agriculture information into precision conservation decisions. Meeting Abstract.

RELATING SPATIAL VARIATIONS IN SOIL COMPACTION TO SOIL PHYSICAL PROPERTIES AND CROP YIELDS - (Proceedings) - (15-Sep-06)

TWO CLASSIFICATION METHODS FOR DEVELOPING AND INTERPRETING PRODUCTIVITY ZONES USING SITE PROPERTIES - (Peer Reviewed Journal)

Martin, N., Bollero, G.A., Kitchen, N.R., Kravchenko, A.N., Sudduth, K.A., Wiebold, W.J., Bullock, D.G. 2006. Two classification methods for developing and interpreting productivity zones using site properties. Plant and Soil. 288(1-2):357-371.

INCREASING INFORMATION WITH MULTIPLE SOIL ELECTRICAL CONDUCTIVITY DATASETS - (Proceedings)

Sudduth, K.A., Kitchen, N.R. 2006. Increasing information with multiple soil electrical conductivity datasets. In: ASABE Annual International Meeting Technical Papers. ASABE Annual Meeting, July 9-12, 2006, Portland, Oregon. Paper No. 061055.

RELATING HYPERSPECTRAL IMAGE BANDS AND VEGETATION INDICES TO CORN AND SOYBEAN YIELD - (Peer Reviewed Journal)

Jang, G., Sudduth, K.A., Hong, S.Y., Kitchen, N.R., Palm, H.L. 2006. Relating hyperspectral image bands and vegetation indices to corn and soybean yield. Korean Journal of Remote Sensing. 22(3):183-197.

COMPARISON OF TWO ALTERNATIVE METHODS TO MAP SOIL MECHANICAL RESISTANCE ON-THE-GO - (Proceedings)

Adamchuk, V.I., Sudduth, K.A., Ingram, T.J., Chung, S. 2006. Comparison of two alternative methods to map soil mechanical resistance on-the-go. ASABE Annual International Meeting Proceedings, July 9-12, 2006, Portland, OR. 06-1057

Relating Herbicide Loadings to Satellite-Derived Land Use on Watersheds with Runoff-Prone Soils - (Abstract Only)

Jang, G., Sudduth, K.A., Lerch, R.N., Sadler, E.J., Wang, C. 2006. Relating Herbicide Loadings to Satellite-Derived Land Use on Watersheds with Runoff-Prone Soils [abstract]. Managing Agricultural Landscapes for Environmental Quality, SWCS Meeting, October 11-13, 2006, Kansas City, Missouri. p. 65.

SOIL FAILURE MODELS FOR VERTICALLY OPERATING AND HORIZONTALLY OPERATING STRENGTH SENSORS - (Peer Reviewed Journal)

Chung, S., Sudduth, K.A. 2006. Soil failure models for vertically operating and horizontally operating strength sensors. Transactions of the ASABE. 49(4):851-863.

MODELING FOR PRECISION AGRICULTURE-HOW GOOD IS GOOD ENOUGH, AND HOW CAN WE TELL? - (Proceedings)

Sadler, E.J., Jones, J.W., Sudduth, K.A. Modeling for precision agriculture-How good is good enough, and how can we tell? In: Stafford, J.V., ed. Precision Agriculture '07 - Proceedings 6th European Conference on Precision Agriculture, June 4-6, 2007. Skiathos, Greece. 2007. p. 241-248.

UNDERSTANDING PRODUCTIVITY VARIATION ON UN-IRRIGATED CLAYPAN SOILS - (Abstract Only)

Jung, W., Kitchen, N.R., Sudduth, K.A. 2006. Understanding productivity variation on un-irrigated claypan soils [abstract]. Korean Crop Science Society annual meeting, April 27-28, 2006, Choenan, Korea.

TARGETING IMPROVED WITHIN-FIELD WATER AND SOIL QUALITY USING PRECISION CONSERVATION - (Abstract Only)

Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Sadler, E.J., Lerch, R.N., Myers, D.B. 2006. Targeting improved within-field water and soil quality using precision conservation. International Soil and Water Conservation Conference.

SPATIALLY VARIABLE CORN YIELD LEVEL IS A WEAK PREDICTOR OF OPTIMAL NITROGEN - (Peer Reviewed Journal)

Scharf, P.C., Kitchen, N.R., Sudduth, K.A., Davis, J.G. 2006. Spatially variable corn yield level is a weak predictor of optimal nitrogen. Soil Science Society of America Journal. 70:2154-2160.

HYPERSPECTRAL REFLECTANCE ESTIMATION OF RESERVOIR WATER QUALITY - (Proceedings)

Sudduth, K.A., Jang, G., Lerch, R.N., Sadler, E.J. 2006. Hyperspectral reflectance estimation of reservoir water quality. In: Yang, C., Everitt, J.H. (editors), Proceedings 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment. October 4-6, 2005, Weslaco, Texas. 2006 CDROM.

RELATING IMAGE-DERIVED VEGETATION INDICES TO CROP YIELD - (Proceedings)

Jang, G., Sudduth, K.A., Hong, S., Kitchen, N.R., Palm, H.L. 2006. Relating image-derived vegetation indices to crop yield. In: Yang, C., Everitt, J.H. (editors), Proceedings 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment. October 4-6, 2005, Weslaco, Texas. 2006 CDROM.

RELATIONSHIP OF SOIL PROFILE STRENGTH AND APPARENT SOIL ELECTRICAL CONDUCTIVITY TO CROP YIELD - (Peer Reviewed Journal)

Jung, W., Kitchen, N.R., Sudduth, K.A. 2006. Relationship of soil profile strength and apparent soil electrical conductivity to crop yield. Korean Journal of Soil Science and Fertilizer. 32(2):109-115.

SPATIAL CHARACTERISTICS OF CLAYPAN SOIL PROPERTIES IN AN AGRICULTURAL FIELD - (Peer Reviewed Journal)

Jung, W., Kitchen, N.R., Sudduth, K.A., Anderson, S.H. 2006. Spatial characteristics of claypan soil properties in an agricultural field. Soil Science Society of America Journal. 70(4):1387-1397.

RADIOMETRIC ESTIMATION OF SOIL PROPERTIES USING MULTIPLE IMAGE SENSORS IN RICE PADDY AND DRYLAND FIELDS - (Abstract Only)

Hong, S., Rim, S., Sudduth, K.A., Kitchen, N.R., Kim, Y., Lee, J., Kwak, H. 2006. Radiometric estimation of soil properties using multiple image sensors in rice paddy and dryland fields. World Congress of Soil Science, July 9-15, 2006, Philadelphia, PA. p. 56-13.

LANDSCAPE AND CONSERVATION MANAGEMENT EFFECTS ON SOIL HYDRAULIC PROPERTIES FOR AN EPIAQUALF - (Abstract Only)

Jiang, P., Anderson, S.H., Kitchen, N.R., Sadler, E.J., Sudduth, K.A. 2006. Landscape and conservation management effects on soil hydraulic properties for an epiaqualf. World Congress of Soil Science.

DESIGN AND VALIDATION OF AN ON-THE-GO SOIL STRENGTH PROFILE SENSOR - (Peer Reviewed Journal)

Chung, S.O., Sudduth, K.A., Hummel, J.W. 2006. Design and validation of an on-the-go soil strength profile sensor. Transactions of the American Society of Agricultural and Biological Engineers. 49(1):5-14.

CHARACTERIZATION OF CONE INDEX TO DEFINE COMPACTION MANAGEMENT PARAMETERS - (Proceedings)

Chung, S., Sudduth, K.A., Lee, K., Motavalli, P. 2006. Characterization of cone index to define compaction management parameters. In. Proceedings of the International Soil Tillage Research Organization 17th Triennial Conference, August 28-September 3, 2006,Kiel, Germany. 2006 CDROM.

ON-THE-GO SOIL STRENGTH PROFILE SENSOR TO QUANTIFY SPATIAL AND VERTICAL VARIATIONS IN SOIL STRENGTH - (Peer Reviewed Journal)

Chung, S.O., Sudduth, K.A. 2005. On-the-go soil strength profile sensor to quantify spatial and vertical variations in soil strength. Agricultural and Biosystems Engineering. 6(2):39-46.

A NOVEL USE OF DATA TRANSLATION ALLOWS 3-D PREDICTION OF SOIL FERTILITY LANDSCAPES - (Abstract Only)

Myers, D.B., N.R. Kitchen, K.A. Sudduth, E.J. Sadler. 2005. A novel use of data transformation allows 3-D prediction of soil fertility landscapes [abstract]. In: Proceedings North Central Extension-Industry Soil Fertility Conference. 21:180

USING A FIELD RADIOMETER TO ESTIMATE INSTANTANEOUS SKY CLEARNESS - (Peer Reviewed Journal)

Souza, E.G., Scharf, P.C., Sudduth, K.A., Hipple, J.D. 2006. Using a field radiometer to estimate instantaneous sky clearness. Brazilian Journal of Agricultural and Environmental Engineering. 10(2):369-373

SOIL COMPACTION SENSING AND MANAGEMENT - (Abstract Only)

Sudduth, K.A., Chung, S., Sanchez, P.A., Upadhyaya, S.K. 2005. Soil compaction sensing and management [abstract] [CDROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

WATERSHED-SCALE CROP TYPE DELINEATION USING SEASONAL TRENDS IN REMOTE SENSING-DERIVED VEGETATION INDICES - (Abstract Only)

Jang, G., Sudduth, K.A., Sadler, E.J., Lerch, R.N. 2005. Watershed-scale crop type delineation using seasonal trends in remote sensing-derived vegetation indices [abstract] [CDROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

VARIABLE RATE CORN NITROGEN MANAGEMENT IN MISSOURI USING ACTIVE-LIGHT REFLECTANCE SENSING - (Abstract Only)

Kitchen, N.R., Scharf, P.C., Sudduth, K.A. 2005. Variable rate corn nitrogen management in Missouri using active-light reflectance sensing [abstract] [CDROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

EFFECTS OF PLANT-SPECIFIC N TREATMENT AND PLANT SPACING ON CORN YIELD - (Abstract Only)

Jiang, P., Kitchen, N.R., Sudduth, K.A. 2005. Effects of plant-specific N treatment and plant spacing on corn yield [abstract] [CDROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

CROP MANAGEMENT IMPACTS ON CLAYPAN SOIL QUALITY - (Abstract Only)

Jung, W., Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Anderson, S.H., Sadler, E.J. 2005. Crop management impacts on claypan soil quality [abstract[ [CDROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

WITHIN-FIELD VARIABILITY OF CROP YIELD USING A HIERARCHICAL MODEL - (Abstract Only)

Jiang, P., Kitchen, N.R., He, Z., Sudduth, K.A., Sadler, E.J. 2005. Within-field variability of crop yield using a hierarchical model [abstract] [CDROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

ENVIRONMENTAL IMPLICATIONS OF SENSOR-BASED VARIABLE-RATE N APPLICATION IN CORN - (Abstract Only)

Roberts, D.F., Kitchen, N.R., Scharf, P.C., Sudduth, K.A. 2005. Environmental implications of sensor-based variable-rate n application in corn [abstract] [CDROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

ESTIMATING WATER QUALITY WITH AIRBORNE AND GROUND-BASED HYPERSPECTRAL SENSING - (Proceedings)

Sudduth, K.A., Jang, G., Lerch, R.N., Sadler, E.J. 2005. Estimating water quality with airborne and ground-based hyperspectral sensing. Proceedings of the American Society of Agricultural Engineers Annual International Meeting. Paper No. 052006.

VARIABILITY STRUCTURE OF ON-THE-GO SOIL STRENGTH SENSOR DATA - (Proceedings)

Chung, S., Sudduth, K.A., Tan, J. 2005. Variability structure of on-the-go soil strength sensor data. Proceedings of the American Society of Agricultural Engineers Annual International Meeting. Paper No. 051090.

DEVELOPMENT AND EVALUTION OF A HORIZONTALLY OPERATING SOIL STRENGTH PROFILE SENSOR - (Proceedings)

Chung, S., Sudduth, K.A. 2005. Development and evaluation of a horizontally operating soil strength profile sensor. In: Proceedings of the First Asian Conference on Precision Agriculture, August 4-6, 2005, Toyohashi, Japan. CDROM. p. 101-106.

LANDSCAPE MODELS OF CLAYPAN SOIL PROFILE PROPERTIES AS A FUNCTION OF DIVERGENCE FROM CLAY-MAXIMUM DEPTH - (Abstract Only)

Myers, D.B., Kitchen, N.R., Sudduth, K.A., Sadler, E.J. 2005. Landscape models of claypan soil profile properties as a function of divergence from clay-maximum depth [abstract]. Pedometrics 2005: Frontiers in pedometrics, International Union of Soil Scientists. p. 67.

QUANTIFICATION AND MANAGEMENT OF SPATIAL AND VERTICAL VARIABILITY IN SOIL COMPACTION - (Proceedings)

Chung, S., Sudduth, K.A. 2005. Quantification and management of spatial and vertical variability in soil compaction. In: Eco-Friendly Precision Agriculture Research, Proceedings of the 2005 Meeting of the Korean Society of Precision Agriculture, June 22, 2005. Korean Society of Precision Agriculture, Suwon, Korea. p. 69-90.

DEVELOPMENT OF A CONSERVATION-ORIENTED PRECISION AGRICULTURE SYSTEM: CROP PRODUCTION ASSESSMENT AND PLAN IMPLEMENTATION - (Peer Reviewed Journal)

Kitchen, N.R., Sudduth, K.A., Myers, D.B., Massey, R.E., Sadler, E.J., Lerch, R.N., Hummel, J.W., Palm, H.L. 2005. Development of a conservation-oriented precision agriculture system: Crop production assessment and plan implementation. Journal of Soil and Water Conservation. 60(6):421-430.

DEVELOPMENT OF A CONSERVATION-ORIENTED PRECISION AGRICULTURE SYSTEM: WATER AND SOIL QUALITY ASSESSMENT - (Peer Reviewed Journal)

Lerch, R.N., Kitchen, N.R., Kremer, R.J., Donald, W.W., Alberts, E.E., Sadler, E.J., Sudduth, K.A., Myers, D.B., Ghidey, F. 2005. Development of a conservation-oriented precision agriculture system: Water and soil quality assessment. Journal of Soil and Water Conservation. 60(6):411-421.

ON-FARM RESEARCH – A TOOL FOR IMPLEMENTING AND VALIDATING SPATIAL TECHNOLOGIES FOR SITE-SPECIFIC CROP MANAGEMENT - (Abstract Only)

Shannon, D.K., Palm, H.L., Kitchen, N.R., Sudduth, K.A. 2005. On-farm research–-A tool for implementing and validating spatial technologies for site-specific crop management[CDROM]. American Society of Agricultural Engineers Annual International Meeting. Abstract No. 051069.

REAL-TIME CROP REFLECTANCE SENSING TO CONTROL VARIABLE-RATE NITROGEN APPLICATION - (Abstract Only)

Sudduth, K.A., Drummond, S.T., Kitchen, N.R., Scharf, P.C. 2005. Real-time crop reflectance sensing to control variable-rate nitrogen application [abstract] [CDROM]. American Society of Agricultural Engineers Annual International Meeting. Abstract No. 051063.

ESTIMATING WATER QUALITY WITH AIRBORNE AND GROUND-BASED HYPERSPECTRAL SENSING - (Abstract Only)

Sudduth, K.A., Jang, G., Lerch, R.N., Sadler, E.J. 2005. Estimating water quality with airborne and ground-based hyperspectral sensing [CDROM]. American Society of Agricultural Engineers Annual International Meeting. Abstract No. 052006.

PERFORMANCE OF LOWER COST GPS RECEIVERS FOR GPS-AIDED GUIDANCE - (Abstract Only)

Shannon, D.K., Sudduth, K.A. 2005. Performance of lower cost GPS receivers for GPS-aided guidance [abstract] [CDROM]. American Society of Agricultural Engineers Annual International Meeting. Abstract No. 051090.

VARIABILITY STRUCTURE OF ON-THE-GO SOIL STRENGTH SENSOR DATA - (Abstract Only)

Chung, S., Sudduth, K.A., Tan, J. 2005. Variability structure of on-the-go soil strength sensor data [CDROM]. American Society of Agricultural Engineers Annual International Meeting. Abstract No. 051039.

EVALUATION OF PHOSPHATE ION-SELECTIVE MEMBRANES FOR REAL-TIME SOIL NUTRIENT SENSING - (Proceedings)

Kim, H., Hummel, J.W., Birrell, S.J., Sudduth, K.A. 2005. Evaluation of phosphate ion-selective membranes for real-time soil nutrient sensing [CDROM]. American Society of Agricultural Engineers Annual International Meeting. Paper No. 051033.

OVERVIEW OF THE MISSOURI CONSERVATION EFFECTS ASSESSMENT PROJECT - (Abstract Only)

Lerch, R.N., Sadler, E.J., Alberts, E.E., Sudduth, K.A. 2005. Overview of the Missouri Conservation Effects Assessment Project [abstract] [CDROM]. American Society of Agricultural Engineers Annual International Meeting. Abstract No.052134.

REAL-TIME CORN ASSESSMENT FOR VARIABLE RATE NITROGEN MANAGEMENT - (Abstract Only)

Kitchen, N.R., Sudduth, K.A. 2005. Real-time corn assessment for variable rate nitrogen management [abstract]. It's the Water Workshop.

NEWLY DEVELOPED TECHNOLOGIES FOR SOIL AND WATER CONSERVATION - (Proceedings)

Sadler, E.J., Sudduth, K.A., Kitchen, N.R., Lerch, R.N., Kremer, R.J., Vories, E.D. 2005. Newly developed technologies for soil and water conservation. In: Chung, N.J., Kim, W.S., Kim, H.S., Kim, J.K., Eom, K.C., Lee, I.W., editors. Proceedings of the International Workshop on Newly Developed Innovative Technology for Soil and Water Conservation. Rural Development Administration, Suwon, Korea. p. 15-34.

WATERSHED-SCALE CROP TYPE MAPPING USING SATELLITE REMOTE SENSING - (Abstract Only)

Jang, G., Lerch, R.N., Sudduth, K.A., Sadler, E.J., Wang, C. 2006. Watershed-scale crop type mapping using satellite remote sensing [abstract]. Soil and Water Conservation Society International Conference Abstracts. Soil and Water Conservation Society Annual International Meeting. July 22-26, 2006, Keystone, Colorado. p. 78

IN-SITU NIR SPECTROSCOPY TO MEASURE CARBON AND OTHER SOIL ATTRIBUTES - (Abstract Only)

Christy, C.D., Laird, D.A., Sudduth, K.A. In-situ NIR spectroscopy to measure carbon and other soil attributes. Greenhouse Gas Emissions and Carbon Sequestration Symposium. Available: http://soilcarboncenter.k-state.edu/conference/Abstract_Pages.htm.

THE COMPACTION PROBLEM: SENSORS ADDRESS SOIL COMPACTION VARIATIONS - (Trade Journal)

Sudduth, K.A., Chung, S. 2005. The compaction problem: Sensors address soil compaction variations. Resource 12(4):9-10.

PATH ANALYSIS OF FACTORS LIMITING CROP YIELD IN RICE PADDY AND UPLAND CORN FIELDS - (Peer Reviewed Journal)

Chung, S., Sudduth, K.A., Chang, Y. 2005. Path analysis of factors limiting crop yield in rice paddy and upland corn fields. Journal of Biosystems Engineering. 30(1):45-55.

CHARACTERIZATION OF CONE INDEX AND TILLAGE DRAFT DATA TO DEFINE DESIGN PARAMETERS FOR AN ON-THE-GO SOIL STRENGTH PROFILE SENSOR - (Peer Reviewed Journal)

Chung, S., Sudduth, K.A. 2004. Characterization of cone index and tillage draft data to define design parameters for an on-the-go soil strength profile sensor. Agricultural and Biosystems Engineering. 5(1):10-20.

RELATIONSHIP OF APPARENT SOIL ELECTRICAL CONDUCTIVITY TO CLAYPAN SOIL PROPERTIES. - (Peer Reviewed Journal)

Jung, W.K., Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Motavalli, P.P. 2005. Relationship of apparent soil electrical conductivity to claypan soil properties. Soil Science Society of America Journal 69:883-892.

FIELD-SCALE VARIABILITY IN OPTIMAL NITROGEN FERTILIZER RATE FOR CORN - (Peer Reviewed Journal)

Scharf, P.C., Kitchen, N.R., Sudduth, K.A., Davis, J.G., Hubbard, V.C., Lory, J.A. 2005. Field-scale variability in optimal nitrogen fertilizer rate for corn. Agronomy Journal. 97:452-461.

SPATIALLY-VARIABLE CROP AND SOIL MONITORING FOR ENHANCED PRODUCTION AND CONSERVATION - (Abstract Only)

Kitchen, N.R., Sudduth, K.A., Myers, D.B., Massey, R.E., Drummond, S.T. 2004. Spatially-variable crop and soil monitoring for enhanced production and conservation [abstract]. Monitoring Science and Technology Symposium. September 20, 2004. Denver, CO.

CROP PRODUCTION AND CONSERVATION PLANNING USING PRECISION AGRICULTURE INFORMATION - (Abstract Only)

Kitchen, N.R., Sudduth, K.A., Myers, D.B., Lerch, R.N., Massey, R.E., Alberts, E.E., Sadler, E.J., Palm, H.L., Donald, W.W., Hummel, J.W., Kremer, R.J. 2004. Crop production and conservation planning using precision agriculture information [abstract] [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

OPTIMAL N RATE FOR CORN: SPATIAL VARIABILITY, GEOSTATISTICS, AND PREDICTION - (Abstract Only)

Scharf, P.C., Kitchen, N.R., Sudduth, K.A., Davis, J.G., Hubbard, V.C., Lory, J.A. 2004. Optimal N rate for corn: Spatial variability, geostatistics, and prediction [abstract] [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

SITE-SPECIFIC PROFITABILITY METHODS, ANAYLSIS, AND DECISIONS - (Proceedings)

Massey, R.E., Kitchen, N.R., Myers, D.B., Sudduth, K.A., Drummond, S.T. 2005. Site-specific profitability methods, anaylsis, and decisions. In: Mulla, D.J., editor. Proceedings of the 7th International Conference on Precision Agriculture, July 25-28, 2004. Precision Agriculture Center, University of Minnesota, St. Paul, MN. [unpaginated CDROM]

IMPLEMENTATION AND VALIDATION OF SENSOR-BASED SITE-SPECIFIC CROP MANAGEMENT THROUGH ON-FARM RESEARCH - (Proceedings)

Shannon, D.K., Palm, H.L., Kitchen, N.R., Sudduth, K.A. 2005. Implementation and validation of sensor-based site-specific crop management through on-farm research. In: Mulla, D.J., editor. Proceedings of the 7th International Conference on Precision Agriculture, July 25-28, 2004. Precision Agriculture Center, University of Minnesota, St. Paul, MN. [unpaginated CDROM]

MAPPING SOIL ELECTRICAL CONDUCTIVITY - (Book / Chapter)

Sudduth, K.A., Kitchen, N.R. 2004. Mapping soil electrical conductivity. In: Stamatiadis, S., Lynch, J.M., Schepers, J.S. editors. Remote Sensing for Agriculture and the Environment. Peripheral Editions, Larissa, Greece. p. 188-201.

SITE-SPECIFIC RELATIONSHIPS BETWEEN CORN POPULATION AND YIELD - (Proceedings)

Sudduth, K.A., Birrell, S.J., Bollero, G.A., Bullock, D.G., Hummel, J.W., Kitchen, N.R. 2005. Site-specific relationships between corn population and yield. In: Mulla, D.J., editor. Proceedings of the 7th International Conference on Precision Agriculture, July 25-28, 2004. Precision Agriculture Center, University of Minnesota, St. Paul, MN. [unpaginated CDROM]

EMPIRICAL RELATIONSHIPS BETWEEN PRISMATIC SOIL STRENGTH INDEX AND CONE INDEX - (Proceedings)

Chung, S.O., Sudduth, K.A., Hummel, J.W., Motavalli, P.P., Kitchen, N.R. 2004. Empirical relationships between prismatic soil strength index and cone index. In: Proceedings 2004 International Commission of Agricultural Engineering (CIGR) International Conference, October 11-14, 2004, Beijing, China (CD-ROM).

REMOTE SENSING OF SOILS: USING AIRBORNE HYPERSPECTRAL IMAGES TO ESTIMATE WITHIN-FIELD VARIATIONS IN SOIL PROPERTIES - (Proceedings)

Hong, S.Y., Sudduth, K.A., Kitchen, N.R., Wiebold, W.J., Palm, H.L., Rim, S.K., Sonn, Y.K., Kwak, H.K. 2004. Remote sensing of soils: using airborne hyperspectral images to estimate within-field variations in soil properties. In: Proceedings Global Digital Soil Mapping Workshop, September 14-17, 2004, Montpellier, France. CD-ROM.

COMPARISON OF REMOTE SENSING AND CROP GROWTH MODELS FOR ESTIMATING WITHIN-FIELD LAI VARIABILITY - (Peer Reviewed Journal)

Hong, S.Y., Sudduth, K.A., Kitchen, N.R., Fraisse, C.W., Palm, H.L., Wiebold, W.J. 2004. Comparison of remote sensing and crop growth models for estimating within-field LAI variability. Korean Journal of Remote Sensing. 20(3):175-188.

ANALYSIS OF ERRORS AFFECTING YIELD MAP ACCURACY - (Proceedings)

Drummond, S.T., Sudduth, K.A. 2005. Analysis of errors affecting yield map accuracy. In: Mulla, D.J., editor. Proceedings of the 7th International Conference on Precision Agriculture, July 25-28, 2004. Precision Agriculture Center, University of Minnesota, St. Paul, MN. [unpaginated CDROM]

EVALUATION OF AN ON-THE-GO-SOIL STRENGTH PROFILE SENSOR USING SOIL BIN AND FIELD DATA - (Other)

Chung, S.O., Sudduth, K.A., Plouffe, C., Kitchen, N.R. 2004. Evaluation of an on-the-go-soil strength profile sensor using soil bin and field data [CD-ROM]. American Society of Agricultural Engineers Annual International Meeting. Paper No. 041039.

COMPARISON OF THE VERIS PROFILER 3000 TO AN ASAE-STANDARD PENETROMETER - (Peer Reviewed Journal)

Sudduth, K.A., Hummel, J.W., Drummond, S.T. 2004. Comparison of the Veris Profiler 3000 to an ASAE-standard penetrometer. Applied Engineering in Agriculture. 20(5):535-541.

RELATING ON-THE-GO-SOIL STRENGTH DATA TO CONE INDEX - (Other)

Chung, S.O., Sudduth, K.A., Motavalli, P.P., Kitchen, N.R. 2004. Relating on-the-go-soil strength data to cone index. American Society of Agricultural Engineers Mid-Central Conference. Paper No. MC04-205.

OBJECT-ORIENTED FIELD INFORMATION MANAGEMENT (FIM) PROGRAM DEVELOPED FOR PRECISION AGRICULTURE - (Other)

Sung, J.H., Jung, I.G., Lee, C. K., Lee, Y.B., Choi, K.M., Suh, S.R., Sudduth, K.A. 2004. Object oriented field information management (FIM) program developed for precision agriculture. American Society of Agricultural Engineers Mid-Central Conference. Paper No. MC04-204.

SIMULTANEOUS SOIL MOISTURE AND CONE INDEX MEASUREMENT - (Peer Reviewed Journal)

Hummel, J.W., Ahmad, I.S., Newman, S.C., Sudduth, K.A., Drummond, S.T. 2004. Simultaneous soil moisture and cone index measurement. Transactions of the American Society of Agricultural Engineers. 47(3):607-618.

ASSESSING SPATIAL AND TEMPORAL NUTRIENT DYNAMICS WITH A PROPOSED NUTRIET BUFFERING INDEX - (Proceedings)

MYERS, D.B., KITCHEN, N.R., SUDDUTH, K.A. ASSESSING SPATIAL AND TEMPORAL NUTRIENT DYNAMICS WITH A PROPOSED NUTRIET BUFFERING INDEX. PROCEEDINGS NORTH CENTRAL EXTENSION INDUSTRY SOIL FERTILITY CONFERENCE. 2003. P. 190-199.

REFLECTANCE MEASUREMENTS OF SOIL VARIABILITY - (Proceedings)

SUDDUTH, K.A., HONG, S., HUMMEL, J.W., KITCHEN, N.R. REFLECTANCE MEASUREMENTS OF SOIL VARIABILITY. PROCEEDINGS 24TH ASIAN CONFERENCE ON REMOTE SENSING AND 2003 INTERNATIONAL SYMPOSIUM ON REMOTE SENSING. 2003. CD-ROM (UNPAGINATED). BUSAN, SOUTH KOREA.

MAPPING WITHIN-FIELD VARIABILITY USING AIRBORNE IMAGING SYSTEMS: A CASE STUDY FROM MISSOURI PRECISION AGRICULTURE - (Proceedings)

HONG, S.Y., SUDDUTH, K.A., KITCHEN, N.R., PALM, H.L., WIEBOLD, W.J. 2003. MAPPING WITHIN-FIELD VARIABILITY USING AIRBORNE IMAGING SYSTEMS: A CASE STUDY FROM MISSOURI PRECISION AGRICULTURE [CD-ROM]. PROCEEDINGS 24TH ASIAN CONFERENCE ON REMOTE SENSING AND 2003 INTERNATIONAL SYMPOSIUM ON REMOTE SENSING. KOREAN SOCIETY OF REMOTE SENSING, SEOUL, KOREA.

RELATING APPARENT ELECTRICAL CONDUCTIVITY TO SOIL PROPERTIES ACROSS THE NORTH-CENTRAL USA - (Peer Reviewed Journal)

Sudduth, K.A., Kitchen, N.R., Wiebold, W.J., Batchelor, W.D., Bollero, G.A., Bullock, D.G., Clay, D.E., Palm, H.L., Pierce, F.J., Schuler, R.T. 2005. Relating apparent electrical conductivity to soil properties across the north-central USA. Computers and Electronics in Agriculture. 46:263-283.

ON-THE-GO SOIL STRENGTH PROFILE SENSOR USING A LOAD CELL ARRAY - (Other)

CHUNG, S., SUDDUTH, K.A., HUMMEL, J.W. 2003. ON-THE-GO SOIL STRENGTH PROFILE SENSOR USING A LOAD CELL ARRAY. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. PAPER NO. 031071.

RELATIONSHIPS BETWEEN SOIL BULK ELECTRICAL CONDUCTIVITY AND THE PRINCIPAL COMPONENT ANALYSIS OF TOPOGRAPHY AND SOIL FERTILITY VALUES - (Peer Reviewed Journal)

OFFICER, S.J., KRAVCHENKO, A., BOLLERO, G.A., SUDDUTH, K.A., KITCHEN, N.R., WIEBOLD, W.J., PALM, H.L., BULLOCK, D.G. RELATIONSHIPS BETWEEN SOIL BULK ELECTRICAL CONDUCTIVITY AND THE PRINCIPAL COMPONENT ANALYSIS OF TOPOGRAPHY AND SOIL FERTILITY VALUES. PLANT AND SOIL JOURNAL. 2004. v. 258(1). P. 269-280.

MODELING SOIL FAILURE CAUSED BY PRISMATIC AND CONICAL TOOLS - (Other)

CHUNG, S., SUDDUTH, K.A. 2003. MODELING SOIL FAILURE CAUSED BY PRISMATIC AND CONICAL TOOLS [CD-ROM]. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. PAPER NO. 03-1028.

SITE-SPECIFIC PRODUCTIVITY ZONES DELINEATED USING BULK SOIL ELECTRICAL CONDUCTIVITY - (Proceedings)

KITCHEN, N.R., SUDDUTH, K.A., MYERS, D.B., DRUMMOND, S.T., HONG, S.Y. SITE-SPECIFIC PRODUCTIVITY ZONES DELINEATED USING BULK SOIL ELECTRICAL CONDUCTIVITY. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS ANNUAL INTERNATIONAL MEETING TECHNICAL PAPERS. 2003. CD-ROM. PAPER 032340. ST. JOSEPH, MI.

IRRIGATION SCHEDULING USING INFRARED THERMOMETERS TO MEASURE CANOPY TEMPERATURE ON COTTON AND SOYBEAN - (Other)

BOCKHOLD, D.L., THOMPSON, A.L., SUDDUTH, K.A., HENGGELER, J.C. 2003. IRRIGATION SCHEDULING USING INFRARED THERMOMETERS TO MEASURE CANOPY TEMPERATURE ON COTTON AND SOYBEAN [CD-ROM]. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. PAPER NO. 03-2143.

FROM SENSORS TO INFORMATION: CLEANING YIELD MONITOR DATA - (Proceedings)

DRUMMOND, S.T., SUDDUTH, K.A. FROM SENSORS TO INFORMATION: CLEANING YIELD MONITOR DATA. INFOAG CONFERENCE. 2003. http://www.farmresearch.com/infoag/ProgramDesigner/ia_ShowFile.asp?MatID=22

RELATING ON-THE-GO-SOIL STRENGTH SENSOR DATA AND CONE INDEX - (Abstract Only)

CHUNG, S., SUDDUTH, K.A., KITCHEN, N.R., HUMMEL, J.W. 2003. RELATING ON-THE-GO-SOIL STRENGTH SENSOR DATA AND CONE INDEX. [abstract] [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

HOW TO ASSESS WHETHER MANAGING BY ZONES PAID - (Abstract Only)

KITCHEN, N.R., SUDDUTH, K.A., MYERS, D.B., DRUMMOND, S.T., PALM, H.L., WIEBOLD, W.J. 2003. HOW TO ASSESS WHETHER MANAGING BY ZONES PAID [abstract] [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

PATIENCE PRECEDES CONFIDENCE FOR ASSESSING AND MANAGEMENT OF SUB-FIELD LOW YIELDING AREAS - (Abstract Only)

KITCHEN, N.R., SUDDUTH, K.A., WIEBOLD, W.J., BULLOCK, D.G., BOLERO, G.A., CLAY, D.E., PALM, H.L. 2003. PATIENCE PRECEDES CONFIDENCE FOR ASSESSING AND MANAGEMENT OF SUB-FIELD LOW YIELDING AREAS [abstract] [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

ESTIMATION OF SOYBEAN ROOT LENGTH DENSITY DISTRIBUTION WITH DIRECT AND SENSOR BASED MEASUREMENTS OF CLAYPAN MORPHOLOGY - (Abstract Only)

Myers, D.B., Kitchen, N.R., Sudduth, K.A. 2003. Estimation of soybean root length density distribution with direct and sensor based measurements of claypan morphology [abstract][CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

SENSOR-BASED SOIL ELECTRICAL CONDUCTIVITY AS A MEASURE OF SOIL QUALITY ON CLAYPAN SOILS - (Abstract Only)

Jung, W., Kitchen, N.R., Sudduth, K.A., Kremer, R.J., Motavalli, P., Anderson, S.H., Alberts, E.E. 2003. Sensor-based soil electrical conductivity as a measure of soil quality on claypan soils [abstract] [CD-ROM]. ASA-CSSA-SSSA Annual Meeting Abstracts.

SPATIAL CHARACTERISTICS OF SOIL QUALITY INDICATORS ON CLAYPAN SOILS - (Abstract Only)

JUNG, W., KITCHEN, N.R., SUDDUTH, K.A., KREMER, R.J., MOTAVALLI, R.J., ANDERSON, S.H., ALBERTS, E.E. 2003. SPATIAL CHARACTERISTICS OF SOIL QUALITY INDICATORS ON CLAYPAN SOILS [abstract] [CD-ROM]. ASA-CSSA-SSSA-Annual Meeting Abstracts.

DELINEATING PRODUCTIVITY ZONES ON CLAYPAN SOIL FIELDS USING APPARENT SOIL ELECTRICAL CONDUCTIVITY - (Peer Reviewed Journal)

Kitchen, N.R., Sudduth, K.A., Myers, B.D., Drummond, S.T., Hong, S.Y. 2005. Delineating productivity zones on claypan soil fields using apparent soil electrical conductivity. Computers and Electronics in Agriculture. 46:285-308.

CHARACTERIZATION OF SOIL STRENGTH DATA FOR AN ON-THE-GO SENSOR - (Other)

CHUNG, S., SUDDUTH, K.A. 2003. CHARACTERIZATION OF SOIL STRENGTH DATA FOR AN ON-THE-GO SENSOR. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS MID-CENTRAL CONFERENCE MEETING PAPERS. PAPER NO. MC03-203.

MANAGEMENT ZONE ANALYST (MZA): SOFTWARE FOR SUB-FIELD MANAGEMENT ZONE DELINEATION - (Peer Reviewed Journal)

Fridgen, J.L., Kitchen, N.R., Sudduth, K.A., Drummond, S.T., Wiebold, W.J., Fraisse, C.W. 2004. Management zone analyst (MZA): Software for sub-field management zone delineation. Agronomy Journal. 96:100-108.

SENSOR DEVELOPMENT AND RADIOMETRIC CORRECTION FOR AGRICULTURAL APPLICATION (ARS 115 IS BEING SUBMITTED TO ADD AUTHORS - SEE LOG #128878 FOR ADDITIONAL AUTHORS. THESE AUTHORS ARE ACTUALLY #S 11 THRU 20) 1403 - (Peer Reviewed Journal)

HAVSTAD, K.M., JACKSON, T.J., KITCHEN, N.R., KUSTAS, W.P., MCGUIRE, M.R., PINTER JR, P.J., SUDDUTH, K.A., SCHEPERS, J.S., SCHMUGGE, T.J., STARKS, P.J. SENSOR DEVELOPMENT AND RADIOMETRIC CORRECTION FOR AGRICULTURAL APPLICATION (ARS 115 IS BEING SUBMITTED TO ADD AUTHORS - SEE LOG #128878 FOR ADDITIONAL AUTHORS. THESE AUTHORS ARE ACTUALLY #S 11 THRU 20) JOURNAL OF PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING. v.69(6). p. 705-718.

PREDOMINANT PROPERTIES AFFECTING PROFILE SOIL ELECTRICAL CONDUCTIVITY IN THE US MIDWEST - (Abstract Only)

KITCHEN, N.R., SUDDUTH, K.A., BULLOCK, D.G., CLAY, D.E., THELEN, K.T., SCHULER, R.T., WIEBOLD, W.J., BATCHELOR, W.D. PREDOMINANT PROPERTIES AFFECTING PROFILE SOIL ELECTRICAL CONDUCTIVITY IN THE US MIDWEST. AGRONOMY ABSTRACTS. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY. MADISON, WI.

SOIL QUALITY OF CLAYPAN SOILS ASSESSED USING SENSOR BASED SOIL EC AND TERRAIN ATTRIBUTES - (Abstract Only)

JUNG, W., KITCHEN, N.R., SUDDUTH, K.A. SOIL QUALITY OF CLAYPAN SOILS ASSESSED USING SENSOR BASED SOIL EC AND TERRAIN ATTRIBUTES. AGRONOMY ABSTRACTS. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY, MADISON, WI.

SPATIAL VARIABILITY OF OPTIMUM N RATE FOR CORN - (Abstract Only)

SCHARF, P.C., LORY, J.A., KITCHEN, N.R., SUDDUTH, K.A., DAVIS, J.G. SPATIAL VARIABILITY OF OPTIMUM N RATE FOR CORN. AGRONOMY ABSTRACTS. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY, Madison, WI.

ESTIMATING WITHIN-FIELD VARIATIONS IN SOIL PROPERTIES FROM AIRBORNE HYPERSPECTRAL IMAGES - (Proceedings)

Hong, S.Y., Sudduth, K.A., Kitchen, N.R., Drummond, S.T., Palm, H.L., Wiebold, W.J. 2002. Estimating within-field variations in soil properties from airborne hyperspectral images. Pecora Conference Land Satellite Information in the Next Decade. American Society of Photogrammetry and Remote Sensing. Bethesda, Maryland

COMPARISON OF ELECTROMAGNETIC INDUCTION AND DIRECT SENSING OF SOIL ELECTRICAL CONDUCTIVITY - (Peer Reviewed Journal)

SUDDUTH, K.A., KITCHEN, N.R., BOLLERO, G.A., BULLOCK, D.G. COMPARISON OF ELECTROMAGNETIC INDUCTION AND DIRECT SENSING OF SOIL ELECTRICAL CONDUCTIVITY. AGRONOMY JOURNAL. 2003. V. 95. P. 472-482.

SOIL ELECTRICAL CONDUCTIVITY AND OTHER SOIL AND LANDSCAPE PROPERTIES RELATED TO YIELD FOR THREE CONTRASTING SOIL AND CROP SYSTEMS - (Peer Reviewed Journal)

KITCHEN, N.R., DRUMMOND, S.T., LUND, E.D., SUDDUTH, K.A., BUCHLEITER, G.W. SOIL ELECTRICAL CONDUCTIVITY AND OTHER SOIL AND LANDSCAPE PROPERTIES RELATED TO YIELD FOR THREE CONTRASTING SOIL AND CROP SYSTEMS. AGRONOMY JOURNAL. 2003. V. 95. P. 483-495.

STATISTICAL AND NEURAL METHODS FOR SITE-SPECIFIC YIELD PREDICTION - (Peer Reviewed Journal)

DRUMMOND, S.T., SUDDUTH, K.A., JOSHI, A., BIRRELL, S.J., KITCHEN, N.R. STATISTICAL AND NEURAL METHODS FOR SITE-SPECIFIC YIELD PREDICTION. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2003. V. 46(1). P. 5-14.

REMOTE- AND GROUND-BASED SENSOR TECHNIQUES TO MAP SOIL PROPERTIES. - (Peer Reviewed Journal)

Barnes, E.M., Sudduth, K.A., Hummel, J.W., Lesch, S.M., Corwin, D.L., Yang, C., Daughtry, C.S., Bausch, W.C. 2003. Remote- and ground-based sensor techniques to map soil properties.. Journal of Photogrammetric Engineering and Remote Sensing. 69(6):619-630.

BEFORE YOU VARIABLY APPLY, UNDERSTAND WHY: LESSONS FROM MISSOURI PRECISION AGRICULTURE RESEARCH - (Proceedings)

KITCHEN, N.R., SUDDUTH, K.A., HONG, S. BEFORE YOU VARIABLY APPLY, UNDERSTAND WHY: LESSONS FROM MISSOURI PRECISION AGRICULTURE RESEARCH. PROCEEDINGS KOREAN ANNUAL CONFERENCE ON PRECISION AGRICULTURE. 2002. RURAL DEVELOPMENT ADMINISTRATION, SUWON, KOREA. P. 45-66.

Site-specific decision-making based on RTK GPS survey and six alternative elevation data sources: Soil eroion predictions

- (Peer Reviewed Journal)

Renschler, C.S., Flanagan, D.C. Engel, B.A., Kramer, L.A., Sudduth, K.A. Site-specific decision-making based on RTK GPS survey and six alternative elevation data sources: Watershed topography and delineation. Transactions of the American Society of Agricultural Engineers. 2002. v. 45(6). p. 1883-1895.

UNDERSTANDING THE BEHAVIOR OF CORN (ZEA MAYS I.) REFLECTANCE AND VEGETATION INDICES AS A FUNCTION OF SUN POSITION AND CLOUDS - (Proceedings)

Souza, E.G., Scharf, P.C., Sudduth, K.A. 2002. Understanding the behavior of corn (zea mays i.) reflectance and vegetation indices as a function of sun position and clouds. Congresso Brasileiro de Engenharia Agricola.

SOIL STRENGTH SENSING FOR QUANTIFYING WITHIN-FIELD VARIABILITY - (Other)

Sudduth, K.A., Kitchen, N.R., Drummond, S.T., Bollero, G.A., Bullock, D.G., Chung, S. 2002. Soil strength sensing for quantifying within-field variability. American Society of Agricultural Engineers. Paper No. 021182. CDROM.

PRECISION AGRICULTURE MASTERS PROGRAM - EDUCATING MISSOURI CROP PRODUCERS ABOUT THE BENEFITS OF PRECISION AGRICULTURE MANAGEMENT THROUGH ON-FARM RESEARCH - (Other)

SHANNON, K.D., DAVIS, G.J., SUDDUTH, K.A., WIEBOLD, W.J. PRECISION AGRICULTURE MASTERS PROGRAM - EDUCATING MISSOURI CROP PRODUCERS ABOUT THE BENEFITS OF PRECISION AGRICULTURE MANAGEMENT THROUGH ON-FARM RESEARCH. ASAE ANNUAL INTERNATIONAL MEETING. 2002. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. PAPER NO. 021016.

CHARACTERIZING FIELD-SCALE SOIL VARIABILITY ACROSS THE MIDWEST WITH SOIL ELECTRICAL CONDUCTIVITY - (Proceedings)

SUDDUTH, K.A., KITCHEN, N.R., BATCHELOR, W.D., BOLLERO, G.A., BULLOCK, D.G., CLAY, D.E., PALM, H.L., WIEBOLD, W.J., PIERCE, F.J., SCHULER, R.T. CHARACTERIZING FIELD-SCALE SOIL VARIABILITY ACROSS THE MIDWEST WITH SOIL ELECTRICAL CONDUCTIVITY. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY, MADISON, WI. 2002.

COMBINING REMOTE SENSING AND CROP GROWTH MODELS TO ESTIMATE WITHIN-FIELD VARIABILITY - (Proceedings)

HONG, S.Y., SUDDUTH, K.A., KITCHEN, N.R., FRAISSE, C.W., PALM, H.L., WIEBOLD, W.J. COMBINING REMOTE SENSING AND CROP GROWTH MODELS TO ESTIMATE WITHIN-FIELD VARIABILITY. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY. MADISON, WI.

NEURAL NETWORK ANALYSIS OF SITE-SPECIFIC SOIL, LANDSCAPE AND YIELD DATA - (Proceedings)

DRUMMOND, S.T., SUDDUTH, K.A., KITCHEN, N.R., BATCHELOR, W.D., BOLLERO, G.A., BULLOCK, D.G., CLAY, D.E., PALM, H.L., WIEBOLD, W.J., PIERCE, F.J. NEURAL NETWORK ANALYSIS OF SITE-SPECIFIC SOIL, LANDSCAPE AND YIELD DATA. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. 2002. CD-ROM (UNPAGINATED). AGRONOMY SOCIETY OF AMERICA. MADISON, WI.

PROCEDURES FOR EVALUATING UNSUPERVISED CLASSIFICATION TO DERIVE MANAGEMENT ZONES - (Proceedings)

KITCHEN, N.R., FRIDGEN, J.J., SUDDUTH, K.A., DRUMMOND, S.T., WIEBOLD, W.J., FRAISSE, C.W. PROCEDURES FOR EVALUATING UNSUPERVISED CLASSIFICATION TO DERIVE MANAGEMENT ZONES. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY. MADISON, WI.

SENSING SYSTEMS FOR SITE-SPECIFIC ASSESSMENT OF CORN PLANTS - (Proceedings)

HUMMEL, J.W., DRUMMOND, S.T., SUDDUTH, K.A., KRUMPELMAN, M.J. SENSING SYSTEMS FOR SITE-SPECIFIC ASSESSMENT OF CORN PLANTS. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY. MADISON, WI.

LANDFORM, SOIL MORPHOLOGY, AND TILLAGE EFFECTS ON SOYBEAN ROOT DISTRIBUTION FOR CLAYPAN SOILS - (Abstract Only)

MYERS, D.B., KITCHEN, N.R., SUDDUTH, K.A., FRAISSE, C.W. LANDFORM, SOIL MORPHOLOGY, AND TILLAGE EFFECTS ON SOYBEAN ROOT DISTRIBUTION FOR CLAYPAN SOILS. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY, MADISON, WI.

THE ZONES PROJECTS: UNDERSTANDING SOYBEAN YIELD VARIABILITY - (Abstract Only)

PALM, H.L., WIEBOLD, W.J., KITCHEN, N.R., SUDDUTH, K.A., BATCHELOR, W.D., CLAY, D.E., PIERCE, F.J., SCHULER, R.T., THELEN, K.D. THE ZONES PROJECTS: UNDERSTANDING SOYBEAN YIELD VARIABILITY. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY. MADISON, WI.

FIELD-SCALE EVALUATION OF VARIABLE N RATE RECOMMENDATIONS FOR CORN - (Abstract Only)

SCHARF, P.C., KITCHEN, N.R., SUDDUTH, K.A., DAVIS, J.G., LORY, J. FIELD-SCALE EVALUATION OF VARIABLE N RATE RECOMMENDATIONS FOR CORN. PROCEEDINGS 6TH INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. 2002. CD-ROM (UNPAGINATED). AMERICAN SOCIETY OF AGRONOMY. MADISON, WI.

COMPARISON OF EIGHT IRRIGATION SCHEDULING TOOLS FOR SOYBEAN AND COTTON - (Trade Journal)

BOCKHOLD, D., HENGGELER, J., SUDDUTH, K.A., THOMPSON, A. COMPARISON OF EIGHT IRRIGATION SCHEDULING TOOLS FOR SOYBEAN AND COTTON. INTERNATIONAL WATER AND IRRIGATION REVIEW. 2002. V. 22(3). P. 24-30.

USING AIRBORNE HYPERSPECTRAL AND SATELLITE MULTISPECTRAL DATA TO QUANTIFY WITHIN-FIELD SPATIAL VARIABILITY - (Peer Reviewed Journal)

Hong, S.Y., Sudduth, K.A., Kitchen, N.R., Palm, H.L., Wiebold, W.J. 2002. Using airborne hyperspectral and satellite multispectral data to quantify within-field spatial variability. Korean Journal of Precision Agriculture. 1(1):82-98.

DETERMINING YIELD MONITORING SYSTEM DELAY TIME WITH GEOSTATISTICAL AND DATASEGMENTATION APPROACHES - (Peer Reviewed Journal)

CHUNG, S., SUDDUTH, K.A., DRUMMOND, S.T. DETERMINING YIELD MONITORING SYSTEM DELAY TIME WITH GEOSTATISTICAL AND DATA SEGMENTATION APPROACHES. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2003. V. 45(4). P. 915-926.

REMOTE SENSING FOR NITROGEN MANAGEMENT - (Peer Reviewed Journal)

SCHARF, P.C., SCHMIDT, J.P., KITCHEN, N.R., SUDDUTH, K.A., HONG, S.Y., LORY, J.A., DAVIS, J.G. REMOTE SENSING FOR NITROGEN MANAGEMENT. JOURNAL OF SOIL AND WATER CONSERVATION. V. 57(6). P. 518-524.

HOW CORN REFLECTANCE AND VEGETATION INDICES ARE INFLUENCED BY SUN POSITION AND ATMOSPHERIC CONDITIONS - (Other)

SOUZA, E.G., SCHARF, P., SUDDUTH, K.A. HOW CORN REFLECTANCE AND VEGETATION INDICES ARE INFLUENCED BY SUN POSITION AND ATMOSPHERIC CONDITIONS. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS MEETINGS PAPERS. 2002. MID-CENTRAL CONFERENCE PAPER MC02-06.

USING A FIELD RADIOMETER TO ESTIMATE INSTANTANEOUS SKY CLEARNESS - (Other)

SOUZA, E.G., SCHARF, P., SUDDUTH, K.A., HIPPLE, J.D. USING A FIELD RADIOMETER TO ESTIMATE INSTANTANEOUS SKY CLEARNESS. AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS MEETINGS PAPERS. 2002. MID-CENTRAL CONFERENCE PAPER MC02-07.

SITE-SPECIFIC EVALUATION OF THE CROPGRO-SOYBEAN MODEL ON MISSOURI CLAYPAN SOILS - (Peer Reviewed Journal)

WANG, F., FRAISSE, C., KITCHEN, N.R., SUDDUTH, K.A. SITE-SPECIFIC EVALUATION OF THE CROPGRO-SOYBEAN MODEL ON MISSOURI CLAYPAN SOILS. AGRICULTURAL SYSTEMS. 2003. V. 79. P. 985-1005.

OPTICAL SENSOR FOR GRANULAR FERTILIZER FLOW RATE MEASUREMENT - (Peer Reviewed Journal)

SWISHER, D.W., BORGELT, S.C., SUDDUTH, K.A. OPTICAL SENSOR FOR GRANULAR FERTILIZER FLOW RATE MEASUREMENT. TRANSACTIONS OF THE AMERICAN SOCIETY OF AGRICULTURAL ENGINEERS. 2002. V. 45(4). P. 881-888.

ESTIMATING WITHIN-FIELD VARIATIONS IN SOIL PROPERTIES FROM AIRBORNE HYPERSPECTRAL IMAGES - (Abstract Only) - (13-Mar-02)

SITE-SPECIFIC EVALUATION OF CROP MODELS ON MISSOURI CLAYPAN SOILS - (Abstract Only) - (13-Mar-02)

WHAT IS THE BEST METHOD FOR RELATING MAPPED YIELD DATA WITH OTHER DATA? - (Proceedings) - (24-Jan-02)

BETWEEN-ROW MOWING + BANDED HERBICIDE TO CONTROL ANNUAL WEEDS AND REDUCE HERBICIDE USE IN NO-TILL SOYBEAN (GLYCINE MAX) AND CORN (ZEA MAYS) - (Abstract Only) - (30-Dec-01)

ECONOMIC AND ENVIRONMENTAL EVALUATION OF VARIABLE RATE NITROGEN AND LIME APPLICATION FOR CLAYPAN SOIL FIELDS - (Peer Reviewed Journal)

WANG, D., PRATO, T., QIU, Z., KITCHEN, N.R., SUDDUTH, K.A. ECONOMIC AND ENVIRONMENTAL EVALUATION OF VARIABLE RATE NITROGEN AND LIME APPLICATION FOR CLAYPAN SOIL FIELDS. PRECISION AGRICULTURE. 2003. V. 4. P. 35-52.

USING HYPERSPECTRAL REMOTE SENSING DATA TO QUANTIFY WITHIN-FIELD SPATIAL VARIABILITY - (Proceedings)

Hong, S.Y., Sudduth, K.A., Kitchen, N.R., Palm, H.L., Wiebold, W.J. 2001. Using hyperspectral remote sensing data to quantify within-field spatial variability. In: Proceedings Third International Conference on Geospatial Information in Agriculture And Forestry. Ann Arbor, Michigan. CDROM.

ANALYSIS OF SOIL, TOPOGRAPHIC, AND YIELD DATA USING NESTED VARIOGRAMS - (Proceedings)

Chung, S., Sudduth, K.A., Drummond, S.T., Kitchen, N.R. 2001. Analysis of soil, topographic, and yield data using nested variograms. In: Proceedings Third International Conference on Geospatial Information in Agriculture and Forestry. Ann Arbor, Michigan. CDROM.

EVALUATING CLAYPAN SOIL PRODUCTIVITY USING SENSORS AND SOIL SAMPLING - (Proceedings)

Jung, W., Kitchen, N.R., Sudduth, K.A. 2001. Evaluating claypan soil productivity using sensors and soil sampling. In: Proceedings Third International Conference on Geospatial Information in Agriculture and Forestry. Ann Arbor, Michigan. CDROM.

SITE-SPECIFIC EVALUATION OF THE CROPGRO-SOYBEAN MODEL ON MISSOURI CLAYPAN SOILS - (Abstract Only) - (07-Nov-01)

PREDICTING CORN AND SOYBEAN GRAIN QUALITY AND NUTRIENT CONTENT USING HYPERSPECTRAL IMAGERY, TOPOGRAPHIC ATTRIBUTES, AND SOIL CHARACTERISTICS - (Other) - (07-Nov-01)

COMPARISON OF EIGHT IRRIGATION SCHEDULING TOOLS ON SOYBEAN AND COTTON - (Proceedings)

Bockhold, D.L., Henggeler, J.C., Sudduth, K.A., Thompson, A.L. 2001. Comparison of eight irrigation scheduling tools on soybean and cotton. In: Proceedings 22nd Annual International Irrigation Show & Conference, Arlington, Virginia. p. 117-123.

RELATING CORN AND SOYBEAN YIELD WITH SENSOR BASED AND GRID-SAMPLED SOIL PROPERTIES - (Abstract Only) - (26-Oct-01)

INTERACTIONS OF SOIL AND LANDSCAPE PROPERTIES ON CORN-SOYBEAN YIELD VARIABILITY IN THE US MIDWEST - (Abstract Only) - (26-Oct-01)

PRECISION AGRICULTURE DATA ACQUISITION, ANALYSIS, AND INTERPRETATION: A MISSOURI PERSPECTIVE - (Proceedings)

Sudduth, K.A. 2001. Precision agriculture data acquisition, analysis, and interpretation: a Missouri perspective. In: Proceedings Third International Seminar on Data Collection and Analysis of the Field Information for Precision Agriculture. Suwon, Republic of Korea. pp. 45-86.

SENSING CORN POPULATION-ANOTHER VARIABLE IN THE YIELD EQUATION - (Proceedings) - (31-Aug-01)

GEOSTATISTICAL AND DATA SEGMENTATION APPROACHES FOR DETERMINING YIELD MONITORING SYSTEM DELAY TIME - (Other) - (30-Jun-01)

MULTIVARIATE AND GEOSTATISTICAL TECHNIQUES FOR PREDICTING SOIL DRAINAGE CLASS - (Proceedings) - (20-Jun-01)

BETWEEN-ROW MOWING + BANDED HERBICIDE TO CONTROL ANNUAL WEEDS AND REDUCE HERBICIDE USE IN NO-TILL SOYBEAN (GLYCINE MAX) AND CORN (ZEA MAYS) - (Peer Reviewed Journal)

Donald, W.W., Kitchen, N.R., Sudduth, K.A. 2000. Between-row mowing + banded herbicide to control annual weeds and reduce herbicide use in no-till soybean (glycine max) and corn (zea mays). Weed Technology. 15:576-584.

SOIL MOISTURE AND ORGANIC MATTER PREDICTION OF SURFACE AND SUBSURFACE SOILS USING AN NIR SOIL SENSOR - (Peer Reviewed Journal)

Hummel, J.W., Sudduth, K.A., Hollinger, S.E. 2001. Soil moisture and organic matter prediction of surface and subsurface soils using an NIR soil sensor. Computers and Electronics in Agriculture. 32:149-165.

USING PATH ANALYSIS TO UNDERSTAND YIELD-LIMITING FACTORS - (Other) - (31-Mar-01)

THE INFLUENCE OF VARIABLE SOLAR IRRADIANCE ON SOME OPTICAL PROPERTIES OF CORN PLANTS - (Other) - (31-Mar-01)

USING SOIL ELECTRICAL CONDUCTIVITY IN PRECISION AGRICULTURE - (Proceedings) - (01-Mar-01)

CORN AND SOYBEAN YIELD RESPONSE TO P AND K AT DIFFERENT LANDSCAPE POSITIONS - (Proceedings) - (16-Nov-00)

EQUIPMENT AND PROCEDURES FOR SOIL EC MEASUREMENTS - (Abstract Only) - (09-Nov-00)

AGRONOMIC AND ECONOMIC EVALUATION OF VARIABLE-RATE CORN SEEDING ON MISSOURI SOILS - (Abstract Only) - (09-Nov-00)

BETWEEN-ROW MOWING + BANDED HERBICIDE TO CONTROL ANNUAL WEEDS AND REDUCE HERBICIDE USE IN NO-TILL SOYBEAN (GLYCINE MAX) AND CORN (ZEA MAYS) - (Abstract Only) - (09-Nov-00)

DELINEATION METHODS FOR ZONE SAMPLING AND MANAGEMENT OF NUTRIENTS - (Abstract Only) - (09-Nov-00)

DEVELOPMENT AND EVALUATION OF SOFTWARE FOR DELINEATION AND ANALYSIS OF SITE-SPECIFIC MANAGEMENT ZONES - (Abstract Only) - (09-Nov-00)

FIELD-SCALE EVALUATION OF INNOVATIVE N MANAGEMENT SYSTEMS FOR CORN - (Abstract Only) - (09-Nov-00)

ACCURACY ISSUES IN ELECTROMAGNETIC INDUCTION SENSING OF SOIL ELECTRICAL CONDUCTIVITY FOR PRECISION AGRICULTURE - (Peer Reviewed Journal)

Sudduth, K.A., Drummond, S.T., Kitchen, N.R. 2001. Accuracy issues in electromagnetic induction sensing of soil electrical conductivity for precision agriculture. Computers and Electronics in Agriculture. 31:239-264.

DELINEATION OF SITE-SPECIFIC MANAGEMENT ZONES BY UNSUPERVISED CLASSIFICATION OF TOPOGRAPHIC ATTRIBUTES AND SOIL ELECTRICAL CONDUCTIVITY - (Peer Reviewed Journal)

Fraisse, C.W., Sudduth, K.A., Kitchen, N.R. 2001. Delineation of site-specific management zones by unsupervised classification of topographic attributes and soil electrical conductivity. Transactions of the American Society of Agricultural Engineers. 44(1):155-166.

FIELD EVALUATION OF A CORN POPULATION SENSOR - (Proceedings) - (19-Jul-00)

INFLUENCE OF CLAYPAN-SOIL TOPSOIL THICKNESS AND FERTILITY FACTORS ON CORN AND SOYBEAN YIELD - (Proceedings) - (19-Jul-00)

VARIABILITY OF SOIL AND LANDSCAPE ATTRIBUTES WITHIN SUB-FIELD MANAGEMENT ZONES - (Abstract Only) - (19-Jul-00)

AGRONOMIC EVALUATION OF VARIABLE-RATE SEEDING ON MISSOURI SOILS - (Proceedings) - (19-Jul-00)

SOIL CHARACTERIZATION USING A NEAR-INFRARED PENETROMETER - (Proceedings) - (19-Jul-00)

SPATIAL VARIABILITY OF YIELD, CHLOROPHYLL CONTENT, AND SOIL PROPERTIES IN AKOREAN RICE PADDY FIELD - (Proceedings) - (19-Jul-00)

PRECISION AGRICULTURE MASTER PROGRAM - ENHANCING TECHNOLOGY TRANSFER TO MISSOURI CROP PRODUCERS - (Proceedings) - (19-Jul-00)

ESTIMATION OF A SOIL PRODUCTIVITY INDEX ON CLAYPAN SOILS USING SOIL ELECTRICAL CONDUCTIVITY - (Proceedings) - (19-Jul-00)

EVALUATION OF A SOIL CONDUCTIVITY SENSING PENETROMETER - (Other) - (13-Jul-00)

DESIGN AND ANALYSIS OF A GRAIN WEIGHING SYSTEM - (Other) - (13-Jul-00)

SOIL CHARACTERIZATION USING A NEAR-INFRARED PENETROMETER - (Abstract Only) - (13-Mar-00)

MEASURING AND INTERPRETING SOIL ELECTRICAL CONDUCTIVITY FOR PRECISION AGRICULTURE - (Proceedings) - (12-Jan-00)

PREDICTIVE ABILITY OF NEURAL NETWORKS FOR SITE-SPECIFIC YIELD ESTIMATION - (Proceedings) - (12-Jan-00)

CHARACTERIZING SOIL PHYSICAL AND CHEMICAL PROPERTIES INFLUENCING CROP YIELDUSING SOIL ELECTRICAL CONDUCTIVITY - (Proceedings) - (12-Jan-00)

USING SITE-SPECIFIC NITROGEN FERTILIZER APPLICATION TO REDUCE NITRATE LOSSES - (Proceedings) - (12-Jan-00)

SITE SPECIFIC FERTILIZER RECOMMENDATION METHODS TO IMPROVE NUTRIENT UTILIZATION - (Abstract Only) - (07-Oct-99)

PREDICTORS OF WITHIN-FIELD VARIABILITY OF GRAIN NUTRIENT CONTENT FOR PRECISION AGRICULTURE - (Abstract Only) - (07-Oct-99)

USING SITE-SPECIFIC NITROGEN APPLICATIONS TO IMPROVE WATER QUALITY - (Abstract Only) - (07-Oct-99)

PRECISION NITROGEN STRATEGIES FOR MIDWEST CLAYPAN SOILS - (Proceedings) - (08-Sep-99)

IMPROVING WATER QUALITY USING SITE-SPECIFIC APPLICATIONS OF NITROGEN FERTILIZER - (Proceedings) - (08-Sep-99)

QUANTIFYING SOIL AND LANDSCAPE VARIABILITY FOR PRECISION CROP MANAGEMENT - (Abstract Only) - (23-Aug-99)

COMBINE CUT WIDTH DETERMINATION BY VECTOR PROCESSING OF GPS POSITION DATA - (Peer Reviewed Journal) - (19-Aug-99)

ELECTRICAL CONDUCTIVITY AS A CROP PRODUCTIVITY MEASURE FOR CLAYPAN SOILS - (Peer Reviewed Journal) - (29-Jul-99)

USE OF UNSUPERVISED CLUSTERING ALGORITHMS FOR DELINEATING WITHIN-FIELD MANAGEMENT ZONES - (Other) - (22-Jul-99)

OPTICAL MEASUREMENT OF GRANULAR FERTILIZER FLOW RATES FOR PRECISION AGRICULTURE - (Other) - (22-Jul-99)

SOIL MOISTURE AND ORGANIC MATTER PREDICTION OF B-HORIZON SOILS USING AN NIRSOIL SENSOR - (Abstract Only) - (20-Jul-99)

CAN TOPSOIL THICKNESS HELP DETERMINE CROP PHOSPHOROUS AND POTASSIUM NEEDS? - (Trade Journal) - (15-Jun-99)

ENGINEERING TECHNOLOGY FOR PRECISION FARMING - (Proceedings) - (27-May-99)

AN EVALUATION OF METHODS FOR DETERMINING SITE-SPECIFIC MANAGEMENT ZONES - (Proceedings) - (12-Nov-98)

ENGINEERING FOR PRECISION AGRICULTURE--PAST ACCOMPLISHMENTS AND FUTURE DIRECTIONS - (Other) - (16-Sep-98)

SOIL CONDUCTIVITY SENSING ON CLAYPAN SOILS: COMPARISON OF ELECTROMAGNETIC INDUCTION AND DIRECT METHODS - (Proceedings) - (20-Jul-98)

DEVELOPMENT OF WITHIN-FIELD MANAGEMENT ZONES: SOIL SURVEY VERSUS A QUANTITATIVE MEASURE - (Proceedings) - (20-Jul-98)

EVALUATION OF CROP MODELS TO SIMULATE SITE-SPECIFIC CROP DEVELOPMENT AND YIELD - (Proceedings) - (20-Jul-98)

VECTOR METHOD FOR DETERMINING HARVEST AREA USING COMBINE POSITION DATA - (Proceedings) - (20-Jul-98)

ULTRASONIC AND GPS MEASUREMENT OF COMBINE SWATH WIDTH - (Other) - (13-Jul-98)

GIS-BASED INTEGRATED MODELING FOR SITE-SPECIFIC CROP MANAGEMENT - (Other) - (13-Jul-98)

INTEGRATING SPATIAL DATA COLLECTION, MODELING AND ANALYSIS FOR PRECISION AGRICULTURE - (Proceedings) - (02-Jun-98)

SOIL ELECTRICAL CONDUCTIVITY AS A CLAYPAN-SOIL CROP PRODUCTIVITY INDEX - (Abstract Only) - (02-Jun-98)

REAL-TIME CLOSE-RANGE SENSORS FOR SITE-SPECIFIC CROP MANAGEMENT - (Proceedings) - (20-May-98)

APPLICATION OF NEURAL NETWORKS: PRECISION FARMING - (Proceedings) - (04-May-98)

SITE-SPECIFIC MANAGEMENT AND THE SEED INDUSTRY - (Proceedings) - (09-Dec-97)

USING ELECTROMAGNETIC INDUCTION TO CHARACTERIZE SOILS - (Trade Journal) - (04-Dec-97)

CORN NITROGEN NEEDS AS IMPACTED BY WITHIN-FIELD CHANGES IN LANDSCAPE AND SOIL TYPES - (Proceedings) - (03-Dec-97)

APPLICATION OF CROP SIMULATION MODELS TO PRECISION AGRICULTURE IN MISSOURI - (Abstract Only) - (29-Oct-97)

VARIABLE-RATE NITROGEN FERTILIZER CORN RESPONSE ON MISSOURI CLAYPAN AND ALLUVIAL SOILS - (Abstract Only) - (28-Oct-97)

ELECTROMAGNETIC INDUCTION AS A SOIL PRODUCTIVITY INDEX - (Abstract Only) - (10-Sep-97)

SPATIAL MODELING OF CROP YIELD USING SOIL AND TOPOGRAPHIC DATA - (Proceedings) - (09-Sep-97)

COMBINE CUTTING WIDTH MEASUREMENT FOR YIELD MONITORING - (Other) - (11-Apr-97)

ANALYSIS OF SPATIAL FACTORS INFLUENCING CROP YIELD - (Proceedings) - (01-Dec-96)

MISSOURI PRECISION AGRICULTURE RESEARCH AND EDUCATION - (Proceedings) - (01-Dec-96)

NUTRIENT MAPPING IMPLICATIONS OF SHORT-RANGE VARIABILITY - (Proceedings) - (01-Dec-96)

SPATIAL ANALYSIS OF YIELD-LIMITING FACTORS - (Proceedings) - (20-Nov-96)

SPATIAL PREDICTION OF CROP PRODUCTIVITY USING ELECTROMAGNETIC INDUCTION - (Proceedings) - (20-Nov-96)

EVALUATION OF GPS FOR APPLICATIONS IN PRECISION AGRICULTURE - (Peer Reviewed Journal) - (29-Aug-96)

PREDICTING CROP PRODUCTIVITY USING ELECTROMAGNETIC INDUCTION - (Proceedings) - (01-Aug-96)

SENSORS FOR SITE-SPECIFIC MANAGEMENT - (Book / Chapter) - (22-Jul-96)

REAL-TIME SOIL AND CROP SENSORS - HOW WELL DO THEY WORK? - (Book / Chapter) - (03-Jul-96)

GEOGRAPHIC OPERATING RANGE EVALUATION OF AN NIR SOIL SENSOR - (Peer Reviewed Journal) - (12-Jun-96)

ACQUISITION AND INTERPRETATION OF SPATIAL DATA FOR PRECISION FARMING - (Proceedings) - (29-Mar-96)

SPATIAL PREDICTION OF CROP PRODUCTIVITY USING ELECTROMAGNETIC INDUCTION - (Experiment Station) - (07-Mar-96)

ENGINEERING AND APPLICATION OF PRECISION FARMING TECHNOLOGY - (Book / Chapter) - (27-Feb-96)

SENSORS FOR PRECISION AGRICULTURE - (Abstract Only) - (04-Nov-95)

SENSORS FOR SITE-SPECIFIC MANAGEMENT - (Abstract Only) - (31-Oct-95)

SPATIAL PREDICTION OF CROP PRODUCTIVITY USING ELECTROMAGNETIC INDUCTION - (Abstract Only) - (31-Oct-95)

PRECISION FARMING TECHNOLOGIES: GPS IS JUST THE BEGINNING - (Experiment Station) - (15-Sep-95)

PRECISION FARMING TECHNOLOGY FOR WATER QUALITY PROTECTION - (Proceedings) - (15-Sep-95)

WITHIN FIELD VARIATIONS IN YIELDS AND SOILS: IMPLICATIONS FOR IMPROVED MANAGEMENT - (Proceedings) - (15-Sep-95)

EVALUATION OF VARIABLE RATE NITROGEN APPLICATION STRATEGIES - (Proceedings) - (15-Sep-95)

DETERMINATION OF YIELD LIMITING PARAMETERS - (Abstract Only) - (30-Jun-95)

CORN POPULATION SENSOR FOR PRECISION FARMING - (Abstract Only) - (22-Jun-95)

ANALYSIS AND CORRELATION METHODS FOR SPATIAL DATA - (Abstract Only) - (22-Jun-95)

Last Modified: 05/21/2013

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