Study the correlation of insect pests with weather parameters in pea crop

Abstract

The present research work was carried out at the department of Entomology, College of Agriculture, J.N.K.V.V, Jabalpur during rabi session 2016-17. Correlation between Aphis craccivora population with maximum temperature was non-significant (r= 0.332). Similarly no correlation was observed between its population and minimum temperature (r =0.114). Population of Aphis craccivora indicated positive correlation with morning relative humidity (r = 0.685) and the regression equation was y = 2.776 x – 221.9. Population of Aphis craccivora did not show any correlation with evening relative humidity. Population of Acyrthosiphon pisum indicated significant positive correlation with morning relative humidity, with r value of 0.768 and the regression equation obtained was y = 0.205x-16.40. Its population did not show any correlation with evening relative humidity (r = -0.06). Population of H. armigera was very low during the crop season. Its population did not show significant correlation (r = -0.45) with maximum temperature and minimum temperature (r = 0.217).