RT Journal Article SR Electronic T1 Advances in Nitrogen Management for Water Quality JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 25A OP 26A DO 10.2489/jswc.66.1.25A VO 66 IS 1 A1 Delgado, Jorge A. A1 Follett, Ronald F. YR 2011 UL http://www.jswconline.org/content/66/1/25A.abstract AB