1 Department of Pedology, University of La Laguna, Av. Astrofisico Fco. Sanchez, s/n 38204 La Laguna, Tenerife, Spain
2 Department of Environmental Biology, University of Siena, via delle Cerchia, 3 53100, Siena, Italy
Abstract:
Pesticide disappearance from soils was observed in laboratory studies in which leaching and runoff were impeded, and volatilisation and degradation evaluated. Advection by volatilisation was negligible for the less volatile chemicals, and significant for the more volatile (Trifluralin and Heptachlor). Basic statistics applied to degradation DT50 data of 14 active ingredients in four different soils showed that the properties of pesticides play a major role in determining their degradability.