Proceedings of the Korean Society for Agricultural Machinery Conference (한국농업기계학회:학술대회논문집)
- 1993.10a
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- Pages.1003-1012
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- 1993
Nitrate and Pesticide Losses Under Various Cropping Management Systems
- Kent Mitchell, J. (Department of Agricultural Engineering, University of Illinois at Urbana-Champaign) ;
- Felsot, Allan (Food and Environment Quality Laboratory , Washington State University) ;
- Hirschi, Michael C. (Department of Agricultural Engineering, University of Illonois at Urbana-Champaign) ;
- Lesikar, Bruce J. (Department of Agricultural Engineering, Texas A&M University)
- Published : 1993.10.01
Abstract
The objective of this study was to evaluate the effectiveness of tillage and cropping management systems in reducing the movement of nitrate and pesticides in surface and sub-surface flow. Nitrate and pesticides in runoff and sub-surface tile flow have been monitored for two years from fields with various tillage and cropping management practices. Samples have also been obtained along the mainstream of the watershed. Concentrations of nitrate an pesticides differed little among specific sampling locations along the river, but they definitely followed a seasonal cycle. Nitrate concentrations from the tile drains varied considerably between fields depending upon the cropping management systems used, with concentrations varying seasonally as inthe river.