The Disappearance of Trifluralin from Field Soils

Soil samples were collected from 107 locations following the commercial application of α,α,α-trifluoro-2,6-dinitro- N,N -dipropyl- p -toluidine (trifluralin) for 1, 2, 3, or 4 consecutive years. Analyses of soil samples indicated that trifluralin does not accumulate with repeated annual application and that a steady and continuous decline in the level of trifluralin present in the soil occurred with time.