POPULATION DYNAMICS NATURE OF DAMAGE OF SUGARCANE BLACK BUG, CAVELERIUS SWEETI DI[LYGAEIDAE : HEMIPTERA)

摘要

The population dynamics of sugarcane black bug Cavelerius sweeti was studied on sugarcane crop [Co Pant 90223] during the year 2000 at Pantnagar. The Nymphal population of black bug Caveierius sweeti was found from March and rached at it's peak in July/August. Both nymphal and adult stage was found in July-August, which cause more damage. After mid August, the population started declining. Hence is management practice should be adopted before it reaches its peak period. As it sucks the sap from the under surface of leaves and remains from dusk to dawn hidden in the leaf whorl, the management must be planned accordingly.