Vol. 12, Issue 9 (2023)

Author(s):
SS Dash, SK Nayak and A Dhal

Abstract:
The field experiment on “Incidence of insect pests of black gram [Vigna mungo (L.) Hepper] in relation to abiotic factors in the Western undulating zone of Odisha” was conducted at the Research farm, College of Agriculture, OUAT, Bhawanipatna to study the influence of climatic factors on the population growth during rabi-2021. It was noticed that maximum temperature exhibited significantly negative correlation with thrips, aphid and spiders population, whereas galerucid beetles showed a significant positive correlation. The bright sun shine hours established significantly positive correlation with aphid, predators like coccinellid beetles and spiders and a significantly negative correlation with galerucid beetles and parasitoids population. The estimated regression equation revealed that with every unit increase of maximum temperature there was increase of 1.22, 0.21, 0.02, 0.04 and 0.97 whitefly, jassid, stem fly, semilooper, galerucid beetle population and decrease of 3.09 and 0.36 aphid and thrips population, whereas the predators, parasitoids, spiders and coccinellid beetles decrease 0.62, 1.03, 0.13 and 0.40 respectively.