Sahoo, Sanjay KumarKumar, Vinod2021-08-212021-08-212021M/Ento./329/2019-20https://krishikosh.egranth.ac.in/handle/1/5810174223An experiment on “Dissipation and persistence of chlorantraniliprole and indoxacarb in tomato” was conducted during 2020-2021. The insecticides were applied at recommended and double dosages on tomato (Var. Kashi Vishesh). Representative samples of tomato at varying intervals after second and third spray were analyzed by following slightly modified QuEChERS techniques. Following second and third application of chlorantraniliprole @ 30 and 60 g a.i. ha-1, the result of experiment revealed that an initial deposits of 0.54 to 0.74 and 0.92 to 1.20 mg kg-1 on tomato crop, respectively. The residues further start dissipating and five days after of spraying of chlorantraniliprole the dissipation was observed less than LOQ for both cases. Residues of indoxacarb at 75 and 150 g a.i. ha-1 was 0.44 to 0.57 mg kg-1 and 0.80 to 0.91 mg kg-1 following second and third application, which further declined below LOQ of 0.05 mg kg-1 after 5th and 7th days, respectively. The safe waiting period for tomato was suggested to be 1 day after application, if followed the GAP. Among various household processing methods, maximum per cent reduction of residue of chlorantraniliprole was observed in case of Cooking/ Boiling followed by KMnO4. In case of indoxacarb, highest per cent reduction were observed in case of washing followed by Boiling or cooking.EnglishThesis