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Unpublished Paper
Impact of Liquid Swine Manure Application and Cover Crops on Groundwater Quality
Iowa State Research Farm Progress Reports
  • Carl H. Pederson, Iowa State University
  • Matthew J. Helmers, Iowa State University
  • Rameshwar S. Kanwar, Iowa State University
  • Antonio P. Mallarino, Iowa State University
Northeast Research and Demonstration Farm
Extension Number
RFR A13115
Publication Date
The primary objective of this project was to determine the impact of appropriate rates of swine manure applications to corn and soybeans based on nitrogen and phosphorus requirements of crops, soil phosphorus accumulation, and the potential of nitrate and phosphorus leaching to groundwater. Another purpose of this long-term experimental study was to develop and recommend appropriate manure and nutrient management practices to producers to minimize water contamination potential and enhance the use of swine manure as fertilizer. A third component of this study was to determine the potential effects of rye as a cover crop to reduce nitrate loss to shallow groundwater.
Copyright Owner
Iowa State University
File Format
Citation Information
Carl H. Pederson, Matthew J. Helmers, Rameshwar S. Kanwar and Antonio P. Mallarino. "Impact of Liquid Swine Manure Application and Cover Crops on Groundwater Quality" (2014)
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