HERBICIDE LOADING TO SHALLOW GROUND WATER BENEATH NEBRASKA'S MANAGEMENT SYSTEMS EVALUATION AREA

SNOW D. D. / SPALDING R. F. / WATTS D. G. / et al. - ARTICLE DE PERIODIQUE - 2003

Layout of research-demonstration site and sampling on multilevel and ditches locations of groundwater in contaminated sand and gravel aquifer. Description of agricultural practices and pivot-irrigated corn and alfalfa management fields. Analysis of temporal and areal variability in atrazine , atrazine degradates, metolachlore and nitrate concentrations loading of shallow groundwater. Discussion on the impact of irrigation management during years 1991 to 1996.Evaluation of average molar ratio of deisopropylatrazine to deethylatrazine and regression analysis of concentrations down-gradient of the corn management fields.