Author(s): Rushikesh P Basugade, Chetan M Bondre, Kevin A Gawali and Viresh S Jeur

Abstract: The Population Fluctuation of H. armigera on chickpea conducted on experimental field of G.H. Raiosni School of Agriculture Sciences, Saikheda (M.P.) during Rabi 2022-23 on variety JG-36. The actual results reveals that the population fluctuation of gram pod borer is starts from vegetative stage and last to maturity of crop. The first occurrence of H. armigera was observed in 49th MW with 0.60 larva /meter row length Afterword larvae first time attained its greatest level 1.86 larvae/mrl in 2nd SMW and then slightly declined and as per investigation the maximum population of Helicoverpa amigera recorded in 6^th MW having 2.20 larvae/mrl respectively. Confirms as peak incidence and identified stage is podding stage (grain development stage). The incidence of H armigera gradually declined after 2^nd peak incidence. The varietal characteristics also help in controlling the population of H. armigera. The correlation studies reveal that the signify negative correlation in between gram pod borer and max temperature and correlation calculated -0.648. Likewise the significant positive correlation found in between larval population and RH morning i.e. 0.531 and RH evening i.e. 0.692 as well as rainfall.

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