RT Journal Article SR Electronic T1 Plant nutrient management and risks of nitrous oxide emission JF Journal of Soil and Water Conservation FD Soil and Water Conservation Society SP 137A OP 144A DO 10.2489/jswc.67.5.137A VO 67 IS 5 A1 Clifford S. Snyder A1 Paul E. Fixen YR 2012 UL http://www.jswconline.org/content/67/5/137A.abstract AB