Dissipation and persistence pattern of chlorantraniliprole residues in tomato under open field conditions and its estimation through UHPLC-PDA

Abstract

Field experiment was carried out to study the dissipation and persistence of chlorantraniliprole in tomato (cv. Kashi Vishesh) sprayed @ 30 and 60 g a.i. ha-1 . The initial residues ranged from 0.54 to 0.74 and 0.92 to 1.20 mg kg-1. Residues further declined below Limit of Quantification (LOQ) of 0.05 mg kg-1 after 5th day, respectively. The T1/2 of chlorantraniliprole on tomato after the 2nd spray was calculated to be 1.02 and 1.32 days whereas after the 3rd spray it was observed to be 0.90 days at both the dosages. The safe waiting period for tomato was suggested to be 1 day after application, if followed the GAP.