Population dynamics of major arthropods on soybean [Glycine max (L.) Merrill]

Abstract

An experimental trial was conducted to study the population dynamic of major arthropods of soybean at College of Agriculture, JNKVV, Jabalpur (MP) during Kharif season 2024-25. The result revealed that the incidence of whitefly and jassid was first observed on the crop during 29th SW and attained its peak population during 36th and 37th SW, respectively. The first incidence of stem fly infestation was recorded during 30th SW which attained its peak during 40th SW. The first appearance of green semilooper and bihar hairy caterpillar was observed during 31st and 32nd SW, respectively, and reached its peak point at 38th SW. Correlation studies between weather parameters and insect pests was revealed that whitefly and Jassids population was exhibited significantly negative correlation with evaporation whereas, the infestation of stem fly was exhibited significantly positive correlation with maximum temperature and sunshine hours while, significant negative correlation with morning and evening RH, evening vapour pressure and rainy days.