Abstract
Variable Rate Technology (VRT) has the potential to increase crop yields and improve water quality relative to Uniform Rate Technology (URT). The effects on profitability and water quality of adopting VRT for nitrogen (N) and lime were evaluated for corn production on four claypan soil fields in north central Missouri under average to better than average weather conditions. Variable N and lime rates were based on measured topsoil depth and soil pH, respectively. VRT rates were compared to two different uniform N applications (URT-Nl based on the topsoil depth within these claypan soil fields, and URT-N2 based on a typical N rate for corn production in this area). Expected corn yield was predicted based on topsoil depth, soil pH, N rate, and lime rate. Water quality benefits of VRT relative to URT were evaluated based on potential leachable N. Sensitivity analyses were performed using simulated topsoil data for topsoil depth and soil pH. Results showed that VRT was more profitable than URT in the four sample fields under URT-N1, and in two of the four fields under URT-N2. Greater variation in topsoil depth and soil pH resulted in higher profitability and greater water quality benefits with VRT. Results support adoption of VRT for N and lime application for other claypan soil fields with characteristics similar to those in the fields used in this study.
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References
Adams, F. and Martin, J. B. 1984. Liming effects on nitrogen use and efficiency. In: Nitrogen in Crop Production. edited by Roland D. Hauck (ASA-CSSA-SSSA, Madison, WI, USA), p. 417-426.
Alberts, E. E., Prato, T., Kitchen, N. R. and Blevins, D. W. 1993. Research and education to improve surface and ground water quality of a claypan soil. In: Proceedings of Agricultural Research to Protect Water Quality Conference, edited by the Management Systems Evaluation Steering Committee (Soil and Water Conservation Society, Ankeny, Iowa, USA), p. 21-33.
Babcock, B. A. and Pautsch, G. R. 1998. Moving from uniform to variable fertilizer rates on Iowa corn: effects on rates and returns. Journal of Agricultural and Resource Economics 23(2), 385-400.
Birrell, S. J., Sudduth, K. A. and Kitchen, N. R. 1996. Nutrient mapping implications of short-range variability. In: Proceedings of the 3rd International Conference on Precision Agriculture, edited by P. C. Robert, R. S. Rust, and W. E. Larson (ASA-CSAA-SSSA, Madison, WI, USA), p. 207-216.
Brown, J. R. and Rodiguez, R. R. 1983. Soil Testing in Missouri: A Guide for Conducting Soil Tests in Missouri (Missouri Cooperative Extension Service, University of Missouri-Lincoln University, USA).
Buchholz, D. D., Brown, J. R., Garrett, J. D., Hanson, R. G. and Wheaton, H. N. 1983. Soil Test Interpretations and Recommendations Handbook (Department of Soil and Atmospheric Sciences, College of Agriculture, University of Missouri, USA).
Doerge, T. 2000. EC mapping helps farmers know soil. CTIC Partners, Conservation Technology Information Center, Lafayette, Indiana 18(2), 7.
Doolittle, J. A., Sudduth, K. A., Kitchen, N. R. and Indorante, S. J. 1994. Estimating depths to claypans using electromagnetic induction methods. Journal of Soil Water Conservation 49, 572-575.
English, C. B., Mahajanashetti, S. B. and Roberts, R. K. 1999. Economics and environmental benefit of variable rate application of nitrogen to corn fields: role of variability and weather. Selected paper presented in the American Agricultural Economics Association Meeting, Nashville TN, USA August 8–11.
Fiez, T. E., Miller, B. C. and Pan, W. L. 1994. Assessment of spatially variable nitrogen fertilizer management in winter wheat. Journal of Production Agriculture 7, 86-93.
Fisher, T. R. 1969. Crop yields in relation to soil pH as modified by liming acid soils. Research Bulletin 947 (Agricultural Experiment Station, College of Agriculture, University of Missouri, USA), p. 1-25.
Gantzer, C. J. and McCarty, T. R. 1987. Predicting corn yields on a claypan soil using a soil productivity index. Transactions of the American Society of Agricultural Engineers (ASAE) 30, 1347-1352.
Goos, R. J. and Prunty, L. 1990. Yield variability and the yield goal decision. In: Proceedings of the Great Plains Soil Fertility Conf., edited by J. L. Havlin (Kansas State Univ., Manhattan, USA), p. 187-189.
Hanson, R. G. 1977. Corrective liming of Missouri soils, plant nutrition series, science and technology guide (University of Missouri, Columbia Extension Division).
Ibbotson Associates. 1999. Long run perspective. In: Stocks, Bonds, Bills and Inflation, 1999 Year Book, (Ibbotson Associates, 225 North Michigan Avenue, Suite 700, Chicago, IL 60601, USA), p. 27-42.
Kiniry, L. N. Scrivner, C. L. and Keener, M. E. 1983. A soil productivity index based upon predicted water depletion and root growth. Research Bulletin 1051 (Agricultural Experiment Station, College of Agriculture, University of Missouri, USA), p. 1-25.
Kitchen, N. R., Hughes, D. F., Donald, W. W. and Alberts, E. E. 1998. Agrichemical movement in the root-zone of claypan soils: ridge-and mulch-tillage systems compared. Soil & Tillage Research 48, 179-193.
Kitchen, N. R., Sudduth, K. A. and Drummond, S. T. 1996. Mapping of sand deposition from 1993 Midwest floods with electromagnetic induction measurements. Journal of Soil and Water Conservation 51, 336-340.
Kitchen, N. R., Sudduth, K. A. and Drummond, S. T. 1999. Soil electrical conductivity as a crop productivity measure for claypan soils. Journal of Production Agriculture 12, 607-671.
Kitchen, N. R., Sudduth, K. A., Hughes, D. F., Drummond, S. T. and Birrell, S. J. 1995. On-the-go changes in fertilizer rates to agree with claypan soil productivity. In: Proceedings of Clean Water-Clean Environment-21st Century Conference, Volume 2 (American Society of Agricultural Engineers, St. Joseph, MI, USA), p. 103-106.
Lowenberg-DeBoer, J. and Swinton, S. M. 1997. Economics of site specific management in agronomic crops. In: The State of Site-Specific Management for Agriculture, edited by F. J. Pierce, E. J. Sadler (ASA-CSSA-SSSA, Madison, WI, USA), p. 369-396.
Missouri Agricultural Statistics Service (MASS). 1992–1998. Missouri farm facts, (MASS, P.O. Box L, Columbia, MO 65205, USA).
National Agricultural Statistics Service (NASS). 1995–1999. Agricultural prices annual summaries: 1995, 1996, 1997, 1998 and 1999 (USDA Economics and Statistics System, Albert R. Mann Library, Cornell University, USA). http://usda.mannlib.cornell.edu/reports/nassr/price/zap-bb/.
National Research Council. 1997. Precision Agriculture in th 21 st Century: Geospatial and Information Technologies in Crop Management (National Academy Press, Washington, D.C. USA).
Palisade Corporation. 1996. @RISK: Advanced Risk Analysis for Spreadsheets (Palisade Corporation, Newfield, NJ, USA).
Prato, T. and Kang, C. 1999. Economics and water quality effects of variable and uniform application of nitrogen. Journal of American Water Resources Association 34, 1465-1472.
Pratt, P. F. 1979. Integration, discussion, and conclusion. In: Final Report to the National Science Foundation for Nitrate in Effluents from Irrigation Lands, edited by P. F. Pratt (University of California, Riverside, USA), p. 719-769.
Qiu, Z. and Prato, T. 1999. Integrated economic and environmental assessment of variable rate technology for nitrogen application in corn production, Selected paper presented in the American Agricultural Economics Association Annual Meeting, Nashville TN, USA August 8–11.
Sawyer, J. E. 1994. Concepts of variable rate technology with considerations for fertilizer application. Journal Production Agriculture 7, 195-201.
Schepers, J. S. and Mosier, A. R. 1991. Accounting for nitrogen in nonequilibrium soil-crop systems. In: Managing Nitrogen for Groundwater Quality and Farm Profitability, edited by R. F. Follett, D. R. Kenney, and R. M. Cruse et al. (SSSA, Madison, WI, USA), p. 125-138.
Schnitkey, G. D., Hopkins, J. W. and Tweeten, L. G. 1996. An economic evaluation and precision fertilizer application on corn-soybean fields. In: Proceedings of the 3rd International Conference on Precision Agriculture, edited by P. C. Robert, R. S. Rust, and W. E. Larson (ASA-CSSA-SSSA, Madison, WI, USA), p. 977-987.
Swinton, S. M. and Lowenberg-Deboer, J. 1998. Evaluating the profitability of site-specific fanning. Journal of Production Agriculture 11, 439-446.
Thrikawala, S., Weersink, A., Kachanoski, G. and Fox, G. 1999. Economic feasibility of variable-rate technology for nitrogen on corn. American Journal of Agricultural Economics 81, 914-927.
Wang, D. 2000. Economic and environmental evaluation of variable rate nitrogen and lime application in claypan soils. (Masters thesis, Department of Agricultural Economics, University of Missouri, USA), p. 70-76.
Watkins, K. B., Lu, Y. and Huang, W. 1998. Economic and environmental feasibility of variable rate nitrogen fertilizer application with carry-over effects. Journal of Agricultural and Resource Economics 23(2), 401-426.
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Wang, D., Prato, T., Qiu, Z. et al. Economic and Environmental Evaluation of Variable Rate Nitrogen and Lime Application for Claypan Soil Fields. Precision Agriculture 4, 35–52 (2003). https://doi.org/10.1023/A:1021858921307
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DOI: https://doi.org/10.1023/A:1021858921307