Assessment of host plant resistance for management of gram pod borer, Helicoverpa armigera (Hubner)

Abstract

The present study revealed a wide range of variation in Helicoverpa armigera population (0.70 to 1.51 larvae per plant), pod damage (4.94 to 10.14 per cent), grain damage (4.92 to 15.74 per cent) and grain yield (10.27 to 24.40 q per ha) among fifteen chickpea genotypes screened. The chickpea genotype, Kripa recorded minimum H. armigera population and lowest pod damage i.e. 0.70 larvae per plant and 4.94 per cent as compared to resistant check i.e. ICCL-86111. The lowest grain damage was recorded on ICCL-86111 (4.92 per cent) and Kripa (5.06 per cent) with maximum grain yield of 24.40 q per ha. However, ICC-3137 (susceptible check) recorded maximum H. armigera population (1.51 larvae per plant), highest pod damage (10.14 per cent), grain damage (15.74 per cent) and lowest grain yield (10.27 q per ha). Among the genotypes under present study, Kripa has more resistance against H. armigera as compared to ICCL-86111.