Dissipation pattern and effect of household processing on reduction of Indoxacarb residues in tomato fruits (Lycopersicon esculentum Mill.)
Anita, VK Madan, Sushil Ahlawat and Reena Chauhan
In the present research dissipation behaviour of indoxacarb 4.5% SC was investigated in tomato fruits sprayed at two doses i.e. 37.13 and 74.26 g a.i. ha-1. Tomato fruit samples were collected periodically on 0 (1h after application), 1, 3, 5, 7, 10, and 15 days after application. Tomato samples were fortified at 0.01 to 0.25 mg kg-1 levels and recovered 84.50 to 90.58 percent average residues. The initial deposits were found to be 0.63 and0.82 mg kg-1 at single and double doses, respectively. Dissipation of indoxacarb fitted well to first order kinetics with half-life values ranging from 2.37 to 2.48 days at respective doses. Residues decreased substantially during household processing among which peeling was found most effective which resulted 87-89% reduction. LOD and LOQ were calculated to be 0.005 and 0.01 mg kg-1.