Northeast Research and Demonstration Farm
Nonpoint source nutrient pollution related to land application of manures is recognized as an important environmental and social issue for several reasons. First, manure from swine production facilities can have serious impacts on the quality of ground water resources. Second, several states are in the process of creating laws and/or regulations to reduce nitrogen (N) and phosphorus (P) loadings from manure to soil and water resources. Third, pollution of water resources from nutrients supplied by manure to croplands will help set parameters for developing public policies on the management of manure.
Iowa State University
Kanwar, Rameshwar S.; Baker, James L.; Pederson, Carl H.; Mallarino, Antonio P.; Sawyer, John E.; and Pecinovsky, Kenneth T., "Impact of Swine Manure Applications on Nitrate and Phosphorus in Subsurface Drainage Water" (2004). Iowa State Research Farm Progress Reports. 1380.