Efficacy of different insecticides against pest complex of tomato and effect on their natural enemies

Abstract

Tomato fruit borer, H. armigera is the most destructive insect pest causing considerable losses in quantity as well as quality of tomato fruits. The field experiments on the bioefficacy of Tetraniliprole SC 200 (w/v) at 200, 250 and 300 ml/ha (40, 50 and 60 g a.i /ha) along with Coragen20% SC at 150 ml/ha (30 g a.i /ha) and Novaluron 10% EC at 750 ml/ha (75 g a.i /ha) against fruit borer and leaf miner was conducted in Randomized Block Design with four replications at Department of Entomology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology Udaipur-313001 (Rajasthan), during Kharif, 2013 and 2014. The data revealed that two spray of Tetraniliprole SC 200 (w/v) at 300 ml/ha at 15 days interval caused highest reduction in the population of fruit borer, lowest fruit damage and leaf minor damage and also recorded the higher marketable yield of tomato with a mean of 250.70 and 241.82 q/ha, followed by two spray of Tetraniliprole SC 200 (w/v) at 250 ml/ha at 15 days interval was found at par to above treatment in terms of mean reduction in the population of fruit borer, lowest fruit damage and leaf minor damage and also recorded the higher marketable yield of tomato with a mean of 238.49 and 232.50 q/ha during Kharif 2013 and 2014.