Start Date: Jan 01, 2012
End Date: May 31, 2013
The pesticide submodel of the Soil and Water Assessment Tool currently does not adjust pesticide adsorption parameters to specific soil characteristics. To evaluate the effect of different soil characteristics and laboratory assessment methods, 10 different soils will be collected from a variety of environments and regions of the United States of America to represent a wide range of soil characteristics. Twelve different compounds will be tested on these soils using different laboratory techniques, including batch equilibrium and accelerated solvent extraction (ASE) methods. Targeted chemicals for evaluation are 5 herbicides (2,4-D, atrazine, clomazone, s-metolachlor, saflufenacil); 4 antimicrobials (chlortetracycline, tetracycline, carbodox, bacitracin); and 3 wastewater treatment indicator compounds (sucralose, caffeine, carbemazepine).