Population Dynamics of Major Insect Pests of Cowpea [Vigna unguiculata l. Walp] Crop Ecosystem

The field experiment was conducted with cowpea (CO 7) to study the population dynamics of pest incidence in Pulse crop ecosystem during the year 2020-2021 at KVK, Virinjipuram. The result revealed that the peak activity of leaf hopper, whitefly and aphids were recorded in 43rd SW ,42nd SW and 45th. The peak activity of podbug was also observed during 46th. The spotted pod borer and pod borer was recorded and peak activity was recorded at 46th, 47th SW. The natural enemies was ranged from 0.20 to 1.20 Nos./plant. The population of whitefly in yellow sticky traps per week (2.20Nos./trap/week) and peak activity during 41st SW. The spodoptera liture was also observed during 43rd SW and it was ranged from 0.33 to 2.00 nos./trap/week).