RT Journal Article SR Electronic T1 Managing crop nutrients to achieve water quality goals JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 91A OP 101A DO 10.2489/jswc.74.5.91A VO 74 IS 5 A1 Sharpley, Andrew A1 Helmers, Matthew J. A1 Kleinman, Peter A1 King, Kevin A1 Leytem, April A1 Nelson, Nathan YR 2019 UL http://www.jswconline.org/content/74/5/91A.abstract AB