Response Evaluation of Chickpea Genotypes for Resisting Helicoverpa armigera (Hub) Throughout Growing Season & Correlating with Yield Parameter

Abstract

An investigation was worked out at the experimental Research Farm of the Department of Agricultural Entomology, VNMKV, Parbhani during Rabi, 2022 expecting resistive outcomes from responses of chickpea genotypes against gram pod borer (Helicoverpa armigera Hub.) for eggs and larval population including pod damage per cent from vegetative to maturity stage during growing meteorological weeks (MW). The correlation of the screening parameter with yield has also been calculated. The mean eggs, larval infestation and pod damage per cent of gram pod borer, H .armigera on genotypes under study is presented in the present investigation. It is found that on genotypes indicated significant differences regarding eggs, larval population and pod damage of H. armigera. The mean no. of eggs was reported on genotypes ICCL 86111 (0.24 eggs/plant). The least larval population was reported on genotypes ICCL 86111 (0.51 larvae/plant). The genotype ICCL 86111 had the least pod damage, 3.36 per cent and ICC 506 was (3.93 per cent) also fairly compatible genotype in this regard followed by BDNG 797 (4.26 per cent), ICC 92944 (5.46 per cent), ICCV 10 (5.88 per cent) and JG 62 (7.15 per cent) respectively. The chickpea yield showed significant correlation in negative manner with mean pod damage per cent (r = -0.774). Significantly Negative correlation was found with morning relative humidity with pest incidence in the genotypes viz., BDNG 797 and ICCL 86111.