Toxicity Persistence in Runoff Water and Soil in Experimental Soybean Plots following Chlorpyrifos Application.

H. MUGNI; P. DEMETRIO; A, PARACAMPO; M. PARDI; G. BULUS; C. BONETTO

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

SPRINGER

Lugar: Berlin; Año: 2012 p. 208 - 218

0007-4861

Toxicity persistence in runoff water and soil was studied in experimental soybean plots in successive runoff events produced by an irrigation system. Three chlorpyrifos applications throughout the growing period were assayed. Runoff and soil toxicity to the amphipod Hyalella curvispina and Cnesterodon decemmaculatus was assessed. Persistence was shorter in the early and midseason applications and longer in the late application. Higher temperatures and solar radiation likely contributed to fast toxicity dissipation in the early and midseason applications. Litter accumulation by fallen leaves likely contributed to the longer toxicity persistence in the late application.