• 2003 Precision Agriculture Research Report A detailed progress report on current research projects at the University of Kentucky. (Downloadable zip file: 6.2 MB)

• 2003 Precision Agriculture Publication Report Lists all of the publications and presentations that have been made as part of the precision agriculture research efforts at the University of Kentucky.

• Automated Guidance and GPS

Hart, W.E., J.B. Wilkerson, T.F. Morrow, and T.S. Stombaugh.  2002. Evaluating Operator Feedback Accuracy of Row-Guidance Systems with GPS. (PDF format)  In. P.C. Robert et al. (ed.) Proc. 6th International Conference on Precision Agriculture. ASA Misc. Publ., ASA, CSSA, and SSSA, Madison, WI.

Ramalingam, N.,  T. S. Stombaugh, and J. Mirgeaux.  2000.  DGPS-Based Automatic Vehicle Guidance.  ASAE Paper No. 001068.  Annual International Meeting, Midwest Express Center, Milwaukee, Wisconsin, July 9-12.

Stombaugh, T. S. and S. A. Shearer. 2001. DGPS-based guidance of high-speed application equipment.  (PDF format)  ASAE Paper No. 01-1190. Annual International Meeting, Sacramento Convention Center, Sacramento, California, July 29 through August 1, 2001.

Stombaugh, T.S., S.A. Shearer, and J.P. Fulton. 2002.  Elements of a Dynamic GPS Test Standard.  (PDF format)  ASAE Paper No. 02-1150.  Annual International Meeting, Hyatt Regency Chicago, Chicago, Illinois, July 28-31, 2002.

Stombaugh, T.S., S.A. Shearer, and J.P. Fulton. 2002.  Standards for Comparison of GPS Receiver Performance.  (PDF format)  In. P.C. Robert et al. (ed.) Proc. 6th International Conference on Precision Agriculture. ASA Misc. Publ., ASA, CSSA, and SSSA, Madison, WI.

• Economics

Dillon, C.R. 2002. A mathematical programming model for optimal management zone delineation in precision agricultural. (PDF format)  AAEA Paper No.4483. Annual American Agricultural Economics Association Meeting, Long Beach, California, July 28-31, 2002.

Dillon, C.R. S.A. Shearer, and T.G Mueller. 2001. A mixed integer, nonlinear programming model of innovative variable-rate planting date with polymer seed coatings. (PDF format)  AAEA Paper No.2657. Annual American Agricultural Economics Association Meeting, Chicago, Illinois, August 5-8, 2001.

Gandonou, J., T. S. Stombaugh, C. Dillon, and S.A. Shearer.  2001.  Precision Agriculture: A Break-Even Acreage Analysis.  (PDF format)  ASAE Paper No. 01-1029. Annual International Meeting, Sacramento Convention Center, Sacramento, California, July 29 through August 1, 2001.

Stull, J., C. Dillon, S. Isaacs, and S.A. Shearer.  2001. Use of Geographically Referenced Grain Yield Data for Location and Enrollment of Vegetative Buffer Strips in the Conservation Reserve Program.  (PDF format)  ASAE Paper No. 01-1028. Annual International Meeting, Sacramento Convention Center, Sacramento, California, July 29 through August 1, 2001.

Stull, J, C. Dillon, S. Isaacs, and S.A. Shearer.  2000.  Using GPS Data to Optimally Allocate Land in Production to CRP Buffer Strips.  Paper presented at the Southern Agricultural Economics Association meeting.  Lexington, KY.  Jan. 29 - Feb. 2, 2000.  Abstract in Journal of Agriculture and Applied Economics, 32, 2(2000): 405.

• Fertilizer Application

Burks, T.F., S.A. Shearer, and J.P. Fulton.  2000.  Assessment of Fertilizer Application Accuracy With the Use of Navigational Aids. ASAE Paper No. 001154.  Annual International Meeting, Midwest Express Center, Milwaukee, Wisconsin, July 9-12.

Fulton, J.P., S.A. Shearer, T.S. Stombaugh, and S.F. Higgins. 2003. Comparison of Variable-Rate Granular Application Equipment.  (PDF format) ASAE Paper No. 031125.  Annual International Meeting, Riviera Hotel and Convention Center, Las Vegas, Nevada, July 27-30.

Fulton, J.P., S.A. Shearer, T.S. Stombaugh, and S.G. Higgins. 2002.  Simulation of Variable-Rate Application of Granular Materials.  (PDF format)  ASAE Paper No. 02-1168.  Annual International Meeting, Hyatt Regency Chicago, Chicago, Illinois, July 28-31, 2002.

Fulton, J.P., S.A. Shearer, T.S. Stombaugh, S.G. Higgins and C.R. Dillon. 2002.  'As-Applied' Model Validation for Variable-Rate Application of Granular Materials.  (PDF format)  In. P.C. Robert et al. (ed.) Proc. 6th International Conference on Precision Agriculture. ASA Misc. Publ., ASA, CSSA, and SSSA, Madison, WI.

Fulton, J.P., S.A. Shearer, T.S. Stombaugh, and S.G. Higgins. 2001.  Pattern Assessment of a Spinner Disc Variable-Rate Fertilizer Applicator.  (PDF format)  ASAE Paper No. 01-1116.  Annual International Meeting, Sacramento Convention Center, Sacramento, California, July 29 through August 1, 2001.

Fulton, J.P., S.A. Shearer, M.E. Anderson, T.F. Burks and S,G. Higgins. 2000.  Simulated Application Errors for Granular Materials for Fixed and Variable-Rate Application.  ASAE Paper No. 001153.  Annual International Meeting, Midwest Express Center, Milwaukee, Wisconsin, July 9-12.

Fulton, J.P., S.A. Shearer, G. Chabra and S,G. Higgins. 1999. Field Evaluation of a Spinner Disc Variable-Rate Fertilizer Applicator.  ASAE Paper No. 991101. Annual International Meeting, Sheraton Centre, Toronto, Canada, July 18-21.

• Grain Properties

McNeill, S.G., Montross, M.D., and S.A. Shearer.  2002.  Spatial Variation of Protein, Oil and Starch in Yellow Corn.  (PDF format)  ASAE Paper No. 02-1011.  Annual International Meeting, Hyatt Regency Chicago, Chicago, Illinois, July 28-31, 2002.

• Soil Management

Fulton, J.P., L.G. Wells, S.A. Shearer and R.I. Barnhisel. 1996. Spatial Variation of Soil Physical Properties: A Precursor to Precision Tillage. ASAE Paper No. 961002. International Meeting, Phoenix, Arizona. July 14-18.

Hartsock, N. J., T. G. Mueller,  S. A. Shearer, G. W. Thomas, R. I. Barnhisel, and K. L. Wells.  2000.  Soil Electrical Conductivity Variability.  In. P.C. Robert et al. (ed.) Proc. 5th international conference on precision Agriculture. ASA Misc. Publ., ASA, CSSA, and SSSA, Madison, WI.

Mueller, T.G., A.D. Karathanasis, P.L. Cornelius, H. Cetin 2002. Hyperspectral Imagery: Variability Within and Between Soil Map Phases. In. P.C. Robert et al. (ed.) Proc. 6th International Conference on Precision Agriculture. ASA Misc. Publ., ASA, CSSA, and SSSA, Madison, WI. (in press).

Mueller, T.G., S.A. Shearer, K.L. Wells, G.W. Thomas, R.I. Barnhisel, N.J. Hartsock, S.A. Shearer, A. Kumar, C.R. Dillon.  2000.  Soil Fertility Map Quality: Case Studies in Kentucky.  In. P.C. Robert et al. (ed.) Proc. 5th International Conference on Precision Agriculture. ASA Misc. Publ., ASA, CSSA, and SSSA, Madison, WI.

Murdock, L.W. and P Howe. 1997. Profitability of Variable Rate Fertilization on a Kentucky Soil (a Theoretical Analysis).  Soil Science News & Views. VOL. 18, NO 10. Univ. of Kentucky, College of Agriculture, Agronomy Department.

Pena-Yewtukhiw, E.M., J.H. Grove, J.A. Thompson, and C.E. Kiger.  2001.  New Technologies and Analytical Tools for Fertilizer Recommendations.  Better Crops.  85(1):  18-22.

Shearer, S.A., T.S. Stombaugh,  J.P. Fulton, and T.G. Mueller. 2002.  Considerations for Development of Variable-Rate Controller Test Standard   ASAE Paper No. 02-1191.  Annual International Meeting, Hyatt Regency Chicago, Chicago, Illinois, July 28-31, 2002.

Wells, K.L. and J.E. Dollarhide. 1998. Precision Agriculture: A Field Study of Soil Test Variability And Its Effect on Accuracy of Fertilizer Recommendations. VOL. 19, NO 5. Univ. of Kentucky, College of Agriculture, Agronomy Department.

Wells, L. G., T. S. Stombaugh, and S. A. Shearer. 2001. Application and assessment of precision deep tillage.  (PDF format) ASAE Paper No. 01-1032.  Annual International Meeting, Sacramento Convention Center, Sacramento, California, July 29 through August 1, 2001.

Wells, L.G., S.A. Shearer, J.P. Fulton and L.W. Murdock.  2000.  Assessment of Remote Sensing for Implementation of Precision Tillage.  ASAE Paper No. 001084.  Annual International Meeting, Midwest Express Center, Milwaukee, Wisconsin, July 9-12.

• Waste Management

Fleming, R., T.G. Mueller, T.S. Stombaugh, S.A. Shearer, and J.L. Taraba.  2001.  Optimization of Animal Nutrient Application for Reduced Environmental Loading Using GIS.  (PDF format) ASAE Paper No. 01-1014.  Annual International Meeting, Sacramento Convention Center, Sacramento, California, July 29 through August 1, 2001.
Shearer, S.A., R.I. Barnhisel, J.L. Taraba, and S.F. Higgins. 1999.  Swine and Dairy Waste Management Using Precision Agriculture. A Progress Report for Year I. Senate Bill 271 "An Act Relating to Agricultural Chemical Usage". February, 1999.

• Yield Monitoring and Predictions

Burks, T.F., S.A. Shearer, J.P. Fulton, and T.S. Stombaugh. 2002. Assessment of yield monitor accuracy using the ASAE X-587 Draft Test. In. P.C. Robert et al. (ed.) Proc. 6th International Conference on Precision Agriculture. ASA Misc. Publ., ASA, CSSA, and SSSA, Madison, WI.

Burks, T.F., S.A. Shearer, J.P. Fulton and C. J. Sobolik.  2001.  Influence of Dynamically Varying Inflow Rates on Clean Grain Elevator Yield Monitor Accuracy. (PDF format) ASAE Paper No. 011182.  Sacramento Convention Center, Sacramento, California, July 29 through August 1, 2001.

Burks, T.F., S.A. Shearer, C. J. Sobolik, and J.P. Fulton.  2000.  Combine Yield Monitor Test Facility Development.  ASAE Paper No. 001084.  Annual International Meeting, Midwest Express Center, Milwaukee, Wisconsin, July 9-12.

Shearer, S.A., S,G. Higgins, S.G. McNeill, G.A. Watkins, R.I. Barnhisel, J.C. Doyle, J.H. Leach, and J.P. Fulton. 1997. Data Filtering and Correction Techniques for Generating Yield Maps from Multiple Combine Systems. ASAE Paper No. 971034. Annual International Meeting, Minneapolis Minnesota, August 10-14.

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