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Dissipation behaviour and effect of different decontamination processes on reduction of residues of novaluron in tomato (Lycopersicon esculentum Mill.)

Dissipation behaviour of novaluron 5.25% SC was investigated in tomato fruits sprayed at 43.31 (single dose) and 86.62 g a.i. ha-1 (double dose). Tomato fruits samples were collected periodically on 0 (1h after application), 1, 3, 5, 7, 10, and 15 days after application. Average recoveries of novaluron in tomato fruits fortified at 0.01 to 0.25 mg kg-1 levels ranged from 82.20 to 89.47 per cent. The initial deposits of novaluron were 0.30 and 0.56 mg kg-1 at single and double dose, respectively. Dissipation of novaluron fitted well to first order kinetics with half-life values ranging from 1.40 to 1.52 days at single and double doses, respectively. Residues of novaluron decreased substantially during household processing among which peeling was found most effective which resulted 80 % reduction in both the doses. LOD and LOQ were found to be 0.005 and 0.01 mg kg-1 , respectively. | Dissipation behaviour and effect of different decontamination processes on reduction of residues of novaluron in tomato Lycopersicon esculentum Mill.