Feasibility of Land Application of Soils Contaminated with Pesticide Waste as a Remediation Practice

摘要

The feasibility of cleaning up soil contaminated with pesticide waste by removing it from the contaminated site and applying it to cropland was examined at the Galesville Chemical Company (GCC) in Piatt Co., Illinois. Soil contaminated with the herbicides alachlor, atrazine, metolachlor, and trifluralin was excavated and applied to an adjacent field divided into corn and soybean plots. Soil was applied in amounts equivalent to an application rate of 3, 7.5, or 15 lbs alachlor per acre. Dissipation of residues, phytotoxicity to crops and weeds, bioaccumulation in grain, and quality of shallow groundwater were monitored after application of the contaminated soil. These data were compared to data obtained when herbicides were freshly sprayed at similar concentrations.