Dissipation of fenpropathrin residues in squash fruits intercropped with garden rocket

Abstract

The dissipation and residue of fenpropathrin in squash fruits intercropped with garden rocket under field conditions were studied. Samples were collected periodically on the sampling days after applications. The residue data revealed the half-life values of fenpropathrin in Squash fruit and garden rocket were found to be 1.78 and 1.85 days, respectively. The residues of fenpropathrin were more greatly concentrated in the squash fruit shell than that squash fruit pulp. The initial concentration level of fenpropathrin in squash fruit was lower than in the garden rocket plants. Fenpropathrin levels in squash fruit or garden rocket below maximum residue level (1.0 mg/kg) were detected 3 days after application and no residues were detected on the 10th day.   Key words: Dissipation, fenpropathrin, squash fruits, garden rocket, intercropping.