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Manure Management on Wisconsin Livestock Farms
Fact Sheets No. 6, July 1997
by Douglas Jackson-Smith, Monica Nevius, and Bradford Barham

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Growing public awareness of the effects of non-point source pollution on Wisconsin's ground and surface water has led to closer scrutiny of agricultural practices. In response, a variety of regulatory, technical, and educational approaches have been designed to minimize nitrate and phosphorous contamination of water supplies through improved manure management on livestock farms. Because most Wisconsin farms are diversified crop-livestock operations, the primary emphasis has been on spreading manure appropriately on cropland. Farmers have been encouraged to build lined manure storage facilities, apply and incorporate manure at optimal times in the spring and fall, use concrete barnyard surfaces, and decrease commercial fertilizer applications based on "credits" for the estimated nutrient content of the spread manure.