Influence of leucilure in parasitization behaviors of Trichogramma chilonis Ishii in Brinjal

Abstract

The poormans crop, brinjal is the most widely cultivated vegetable crop in south east Asian countries. Though affected by several pests, brinjal is most seriously infested by the pest, shoot and fruit borer, Leucinodes orbonalis. In the present investigation, the parasitisation behavior of Trichogramma chilonis was tested with and without L. orbonalis sex pheromone, against Corcyra eggs under in-vitro condition and against Leucinodes orbonalis eggs in in-vivo condition. The results proved that under laboratory condition, the maximum parasitization was seen in Corcyra card + pheromone lure (88.33 eggs/ card) than in host eggs alone (60.40 eggs/ card). Under field condition, the maximum parasitization was observed in brinjal cropped plot installed with sex pheromone trap with 34.12 eggs/ card compared to brinjal sole cropped plot with 24.00 eggs/ card.