Chemical Control of Gram Pod Borer, Helicoverpa Armigera Hubner Infesting Pigeonpea

The results of the investigation on chemical control of gram pod borer, Helicoverpa armigera Hubner infesting pigeonpea indicated that among the different insecticides tested indoxacarb 0.0075% gave the highest per cent mortality of the pest followed by spinosad 0.009%, profenophos + cypermethrin 0.044% and endosulfan 0.07%. Indoxacarb 0.0075% recorded significantly highest grain yield (1486 kg/ha). While, highest cost benefit ratio of 1: 18.94 was obtained from the treatment of endosulfan 0.07%.