Publications (Clicking on the reprint icon will take you to the publication reprint.)

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.

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.

Calibrating canopy reflectance sensors to predict optimal mid-season nitrogen rate for cotton - (Peer Reviewed Journal) - (24-Aug-12)

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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

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.

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

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.

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

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.

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.

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.

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.

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.

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

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.

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.

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.

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

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.

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.

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]

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]

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.

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.

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.

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

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.

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.

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.

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

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.

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.

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.

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.

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.

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.

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

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.

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

AGRONOMIC AND ECONOMIC EVALUATION OF VARIABLE-RATE CORN SEEDING ON MISSOURI SOILS - (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.

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

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

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

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

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

SITE SPECIFIC FERTILIZER RECOMMENDATION METHODS TO IMPROVE NUTRIENT UTILIZATION - (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)

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

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