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AbstractA vegetable- and meat-canning facility located in the karst of southeastern Minnesota disposes 2.85105 m3 yr1 of wastewater by spray irrigation of an 83.7-ha field located atop the local groundwater divide. Cannery effluent contains high levels of chloride and nitrogen (organic and ammonia), in excess of 7000 mg/l and 400 mg/l, respectively. Nitrate-nitrogen concentrations are generally 5...