Koehler, R., Lewandowski, A., and Moncrief, J. 2007. Effects of Swine Manure Applications on Soil Nutrient Levels and Phosphorus Loss Risk: Results from a Southwest Minnesota Monitoring Project and the Application of the Minnesota Phosphorus Index. University of Minnesota Extension AG-BU-08424.
The swine manure monitoring study depends on county funding and the cooperation of the pork producers who supply records and access to fields.
Koehler, Robert; Lewandowski, Ann; Moncrief, John.
Effects of Swine Manure Applications on Soil Nutrient Levels and Phosphorous Loss Risk: Results from a Southwest Minnesota Monitoring Project and the Application of the Minnesota Phosphorous Index.
University of Minnesota Extension Service and University of Minnesota Department of Soil, Water, and Climate.
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