Screening of selected genotypes of okra against American bollworm on the basis of shoot infestation

Abstract

The research was done to evaluate the resistant/susceptibility of thirteen different okra varieties against Helicoverpa armigera in the field conditions. At preliminary screening thirteen different varieties were evaluated. Among them three comparatively resistant were Arka Anamika, Bindi Sabazpari and Bindi Punjab selection, three intermediate resistant were Baharti Kaspoori, NS-810 and Rama Krishna and three comparatively susceptible were OH-152, RK-516 and Tarnab Nargis. In final screening the nine different varieties were screened on the basis of shoot infestation. The minimum shoot infestation was recorded on variety Arka Anamika with 5.69% shoot infestation and the maximum shoot infestation was recorded on Tarnab Nargis 12.21% shoot infestation. The Arka Anamika variety proved to be comparatively resistant while the Tarnab Nargis proved to be the comparatively susceptible variety in the final screening.