Under the US Environmental Protection Agency's pesticide data requirements (40 CFR Part 158), selected environmental fate and transport studies (e.g., leaching, adsorption/desorption, soil metabolism) are conducted in agricultural soils representative of those in intended pesticide use areas to determine the potential persistence and mobility of a pesticide in the environment. Foreign soils may be used in conducting these fate studies; however, it is required to demonstrate that the foreign soil have typical characteristics of agricultural soils at the intended pesticide-use sites. This study will present a quantitative approach using various geospatial data and techniques to evaluate foreign soils used for the regulatory studies. A comprehensive understanding of soil taxonomy, chemical and physical characteristics, and soil temperature and moisture regimes of the foreign soils together with those of agricultural soils in the proposed use areas in the US will allow an evaluation of their comparability and hence the suitability of foreign soils for use in regulatory environmental fate and transport studies.

Novel approach to evaluate comparability of foreign soils used for environmental fate studies for agrochemicals with US agricultural soils

246th National Meeting (2013)

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