Dissipation study and persistence of diafenthiuron in green chilli fruits

Abstract

The dissipation patterns of diafenthiuron in green chilli fruits were studied after application of diafenthiuron at fruiting stage at recommended doses (RD) and double the recommended doses (DRD). Diafenthiuron was applied at the rate of 1 g/L (225 g a.i/ha) and 2 g/L (450 g a.i/ha) on chilli fruits and the fruit samples were collected at the 0, 1st, 3rd, 5th, 7th, 10th, 15th, 21st, 25th, and 30th day after spray. The initial deposits of diafenthiuron in chilli fruits from the two treatments were leads to 0.684 and 1.168 mg/kg with half-life of 1.35 and 2.40 days at recommended and double the recommended dose, respectively. Based on the persistence studied waiting period of 9.76 and 11.31 days is suggested for diafenthiuron on chilli from consumer safety point of view.