Vol. 12, Issue 10 (2023)

To findout the effect of meteorological parameters on seasonal population dynamics of gram pod borer (H. armigerpa Hubner) (GPB) on chickpea experiments were conducted at Institute of Agricultural Sciences, BRAUSS, Ambedkar Nagar, Indore during winter season (2018-2020) with JG-14ariety. The activity of these insects were initiated in 50^th standard meteorological week (SMW) with 0.24 and 0.36 larvae/plant peak population of GPB with 2.04 and 2.24 individuals / plant on 6^th and 7^th SMW respectively whereas population was gradually decrease and remained active up to 10^th SMW with 0.28 and 0.32 respectively.

The correlation coefficient between GPB with population and the meteorological parameters viz., relative humidity (r=0.06), maximum temperature (r=0.09) and minimum temperature (r=0.24) was exhibited non-significant positive impact on population fluctuation. The wind velocity (r=0.57*) was found significant positive impact on larval population of GPB during 2018-19. In the year 2019-20 GPB population showed significant negative correlation with minimum temperature (r= -0.65*) whereas relative humidity (r= -0.45), maximum temperature (r= -0.52) and wind velocity (r= -0.42) were exhibited non-significant negative impact on population fluctuation of GPB.