Dissipation dynamics and persistence of thiamethoxam 25wg in mango fruit and soil

Field studies were conducted to determine the dissipation pattern of thiamethoxam in mango when applied at recommended (25 g a.i. or 100 g ha^-1) and double the recommended (50 g a.i. or 200 g ha^-1) doses at fruit formation stage as foliar spray three times at an interval of ten days. Thiamethoxam dissipated to below detectable limit (BDL) after 28 days with half-lives of 9.41 and 7.17 days in recommended and double doses, respectively. Residues of thiamethoxam, and its metabolite CGA-322704 were found to be at below detectable limit in ripe mango fruits and soil samples collected at harvest, in both the doses.