The field experiment on population dynamics, of gram pod borer (H. armigera) on chickpea was conducted at the JNKVV, College of agriculture Ganj Basoda. During Season rabi 2020-21. The results showed that the larval population of H. armigera was first observed 48th SMW (0.20 larval/mrl) which increased gradually and attained a peak larval population on 8th SMW (3.80 larvae/mrl). The weather condition prevailed in this week is Thereafter, the population declined from 9th SMW with average population of 3.30 (larvae/mrl) which gradually decreased with 3.0 & 2.82 & 2.25 in 10th and 11th and 12th SMW, respectively. The correlation analysis between gram pod borer with weather parameters indicated that maximum temperature (r=0.581) had significant positive correlation with gram pod borer, while minimum temperature (r = 0.287) shows positive non-significant and maximum relative humidity (r = -0.593) showed significant negative correlation, whereas minimum relative humidity (r = - 0.347) and rainfall (-0.283) showed non-significant negative correlation with gram pod borer.

Chickpea, Population dynamics, Helicoverpa, Weather factors, Relative Humidity, Temperature

The field experiment on population dynamics, of gram pod borer (H. armigera) on chickpea was conducted at the JNKVV, College of agriculture Ganj Basoda during Rabi 2020-21. The results showed that the larval population of H. armigera was first observed 48th SMW (0.20 larval/mrl) which increased gradually and attained a peak on 8th SMW (3.80 larvae/mrl). Thereafter, the population declined from 9th SMW with average population of 3.30 (larvae/mrl) which gradually decreased with 3.0 & 2.82 & 2.25 in 10th and 11th and 12th SMW, respectively. The correlation analysis between gram pod borer with weather parameters indicated that maximum temperature (r=0.581) had significant positive correlation with gram pod borer, while minimum temperature (r = 0.287) shows positive non-significant and maximum relative humidity (r = -0.593) showed significant negative correlation, whereas minimum relative humidity (r = - 0.347) and rainfall (-0.283) showed non-significant negative correlation with gram pod borer.

Rajkumar Bajya, Yogesh Patel, Vinod Kumar Garg and Neeraj Kumar (2022). Effect of Weather Factors on Population Dynamics of Helicoverpa armigera Hubner (Noctuidae: Lepidoptera) in Chickpea. Biological Forum – An International Journal, 14(4a): 242-245.