The Release of Trichogrammatoidea armigera parasitoid for the Parasitization of Helicoverpa armigera Eggs in Maize

Background: Helicoverpa armigera (Hübner) is a common polyphagous pest on corn cob. H. that controllable through Trichogrammatoidea (Nagaraja) parasitoid release. Successful inundated release of parasitoids depends parasitization and dispersal. Methods: The experiment consisted 2 plots 1 no plot. T. was released twice, at 45 DAP 52 (Day after planting) in the middle experimental dose during generative phase 1000 individuals per 254 m2 (~ 40000/ha). Evaluation carried out by collecting eggs 3 days radius 1, 3, 6 9 m all cardinal directions from point. Result: increased tot he tune 51.91% 38.57%. wind direction did not affect movement which active almost uniform directions. Parasitoid slightly similar distances distribution reached 40 points ha-1 colonies. were grouped hence, monitoring systematically.