Field studies on efficacy of novel insecticides against Helicoverpa armigera (Hubner) infesting on Chickpea

Abstract

Field trials were conducted in randomized block design with three replications of seven treatments during Rabi season 2012-13. Efficacy of different treatments viz., indoxacarb 14.5 SC @ 0.5 ml/l, profenofos 50 EC @ 2.0 ml/l, imidacloprid 17.8 SL @ 1 m/l, novaluron 10 EC @ 1.5 ml/l, fipronil 5 SC @ 2.0 ml/l and lambda cyhalothrin 5 EC @ 1 ml/l was tested against Helicoverpa armigera larvae. The results revealed that indoxacarb 14.5 SC @ 0.5 ml/l was found best with minimum population of H. armigera at first spray indoxacarb 14.5 SC @ 0.5 ml/l was found best among all the treatments with the minimum larval population at first spray first spray of 1.53, 0.46, 0.73 larvae/five plants being 89.45, 97.01, 95.83 percent reduction over control at 3 DAS, 5 DAS & 7 DAS respectively. The minimum larval population at second spray of 0.00, 0.26 and 0.00 larvae/five plants by giving 100, 98.74 & 100 percent reduction over control, at 3 DAS, 5 DAS & 7 DAS respectively.