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Impact of Liquid Swine Manure Application and Cover Crops on Nitrate in Subsurface Drainage Water

The primary objective of this project is to determine the impact of appropriate rates of swine manure applications to corn and soybeans based on nitrogen requirements of crops, and the potential of nitrate leaching to groundwater. Another purpose of this longterm experimental study is to develop and recommend appropriate manure and nutrient management practices to producers to minimize the water contamination potential and enhance the use of swine manure as an organic fertilizer. A third component of this study is to determine the potential effects of rye as a cover crop to reduce nitrate loss to shallow ground water.

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