Direct and Indirect Assessment of Pennsylvania and Arkansas Phosphorus Indices.
Andrew Sharpley, 115 Plant Sciences Bldg., University of Arkansas, Fayetteville, AR, Anthony Buda, USDA-ARS-PSWMRU, University Park, PA, Peter Kleinman, USDA-ARS, University Park, PA and Sheri Herron, BMPs Inc., Farmington, AR