Dissipation pattern and accumulation of Lambda-Cyhalothrin and Beta-Cyfluthrin in Tomato Ramarao G.V., Goud Raja* Department of Entomology, College of Agriculture Professor Jayashankar Agricultural University, Rajendranagar, Hyderabad, 500030 *Email: rajagoud1@gmail.com
Online published on 23 October, 2018. Abstract The dissipation pattern and accumulation of lambda-cyhalothrin and beta-cyfluthrin in the harvested tomato fruits were studied at All India Network Project (AINP) on Pesticide Residue Laboratory, College of Agriculture, Rajendranagar, Hyderabad. The initial deposit of lambda-cyhalothrin, beta-cyfluthrin (0.15 and 0.21mg kg−1) were observed to dissipate to 0.03 mg kg−1 and Below Detected Level by 10th day after first spray, respectively; the half life values of these were 22.97 and 14.90 days, respectively. Accumulation pattern revealed that after third spray, maximum initial deposit was at 0.55 mg kg−1 beta-cyfluthrin followed by lambda-cyhalothrin (0.53 mg kg−1). The safety intervals of lambda-cyhalothrin was observed to be 4.8 and 5.2 days for first and third sprays, while it was 1.2 days at first and 4.8 days at third spray with beta-cyfluthrin. Top Keywords Lamda cyhalothrin, beta cyfluthrin, tomato, fruits, dissipation pattern, accumulation, safety interval. Top |