Weather Parameter’s Impact on Population Fluctuation of Insect Pests in Sunflower

Abstract

The population trend of insect pest of sunflower was studied at North bank plain zone of river Brahmaputra, Biswanath district in the state of Assam during 2021-2022. The simple correlation study showed bright sunshine hour had a positive and significant correlation with the whitefly population relative humidity had a positive and significant correlation with the Aphis gossypii and Amrasca biguttula biguttula Ishida population; A. gossypii had positive and significant relation with maximum temperature and Spilosoma obliqua had negative and significant relation with relative humidity.