Nebraska's groundwater legacy: Nitrate contamination beneath irrigated cropland - Exner, Mary E.; Hirsh, Aaron J.; Spalding, Roy F. (Water resources research, 2014)
Keywords: groundwater contamination; irrigated agriculture; N fertilizer and water management; N fertilizer leachate; nonpoint source nitrate; irrigated agriculture; N fertilizer and water management; N fertilizer leachate; nonpoint source nitrate; groundwater contamination