Studies on seasonal incidence of major insect pest and efficacy of newer insecticides against gram pod borer Helicoverpa armigera Hubner in chickpea

Abstract

The present investigations entitled Studies on seasonal incidence of major insect-pest and efficacy of newer insecticides against gram pod borer, Helicoverpa armigera Hubner in chickpea were carried out at Students Instructional Farm of C. S. Azad University of Agriculture and Technology, Kanpur during Rabi 2017-18 and 2018-19. newlineThe screening of fifty chickpea germplasms with one check variety KGD-1168 was carried out to evaluate for resistance to gram pod borer, H. armigera. Present study revealed that during 48th to 14th SW for 2017-18 and 2018-19. The lowest larval population was recorded of 0.77, 0.71 larvae/m row, respectively, in germplasm 425 and highest population with 6.72 and 6.01 larvae/m row in germplasm 471 and P-255, respectively, during 2017-18 and 2018-19. The minimum pod damage was recorded of 4.08 and 4.88 per cent in germplasm 425 and W-48-75, respectively, and maximum i.e. 14.42 and 13.22 per cent was recorded in germplasm 471 and P-255, respectively. The insect pest susceptibility rating (PSR), only 7 and 8 germplasms were highly susceptible, 26 were moderately susceptible and 16 and 15 were found least susceptible, respectively, in both years. newline newline