Impact of abiotic factors on the population fluctuations of sucking insect pests (Jassids, white fly) on okra (Abelmoschus esculentus L.)

Abstract

Impact of abiotic factors on the population fluctuations of sucking insect pests on okra crop were assessed in the present studies conducted at Research farm, Naini Agriculture Institute, Allahabad during Kharif season 2017. Incidence of white fly and jassids are started during 35th SW. However, peak population of Jassids had been observed during 43rd SW and whiteflies peak population was observed at 43rd SW. In the field sucking insect population persisted up to 48th S.W. (1st week of December). The whitefly population was negatively influenced by morning R.H (r = -0.780) evening R.H. (r = -0.422) while negatively (r = -0.396), influenced by rainfall but not significantly influenced by other weather parameters. The Jassids incidence was also negatively influenced by morning R.H. (r = -0.754), Rain fall (r = -0.393)