Vol. 11, Issue 4 (2022)

Author(s):
Hari Prakash Namdev and Ram Subhag Singh

Abstract:
An experiment was conducted at Agricultural Research Farm of Brahmanand Post Graduate College, Rath, Hamirpur (U.P.) on influence of intercropping on crop losses by chickpea pod borer, Helicoverpa armigera (Hub.) in chickpea during 2016-17 and 2019-20 cropping season. Intercropping had significant influence on the reduction of pod damage and grain damage (in number and by weight) inflicted by grain pod borer (H. armigera) during 2016-17 and 2019-20 cropping seasons. The chickpea intercropped with marigold was found most effective in reducing the pod damage (5.33%),grain damage (4.49%) and grain weight loss (3.5%) during both the cropping seasons, While pod damage reduction over control were 57.15%, 61.35%, and 63.41%, respectively. The second most important intercropping system was chickpea + mustard followed by chickpea + linseed and chickpea + barley. The chickpea + safflower intercropping system were found least effective in reducing the crop losses (pod damage, and grain damage) by H. armigera larvae. The chickpea sole crop had maximum pod damage (12.33%) grain damage (11.48%), grain weight loss (9.75%) and produced minimum grain yield (15.68 q/ha). Chickpea intercropped with marigold was most effective for the management of crop losses in chickpea by chickpea pod borer which produced 19.53q/ha and over chickpea sole crop this intercrop increases 24.55% grain yield. The chickpea intercropped with safflower was observed to produced minimum yield (16.20 q/ha) followed by chickpea + barley (16.66 q/ha) and over chickpea sole crop it increases 3.35% and 6.29% grain yield, respectively.