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- McDowell, R.W.; Sharpley, A.N.; Beegle, D.B.; Weld, J.L.
- Journal of soil and water conservation 2001 v.56 no.4 pp. 306
- phosphorus; losses from soil; runoff; pollution control; watersheds; water pollution; soil fertility; cattle manure; poultry manure; risk assessment; phosphorus fertilizers; pig manure; application rate; fertilizer requirements; nonpoint source pollution; Pennsylvania
- ... The persistence of water quality problems has directed attention toward reduction of agricultural non-point sources of phosphorus (P). We assessed the practical impact of three management scenarios of the USDA-EPA Strategy for Animal Feeding Operations to reduce P losses from Mahantango Creek watershed in Pennsylvania, USA. Using an agronomic threshold of 50 mg Mehlich-3 P kg-1 soil, 55% of the wa ...