author(s)
S Gayathri, B Geetha and MI Manivannan

abstract
The field experiment was conducted in the farmer field at Agaram village, Thoothukudi District during Rabi season 2018-19 to study the influence of natural enemies on suppression of insect pest and improving the yield of brinjal. In the field study on release of natural enemies with erection of different kinds of traps, the treatment T4 (two releases of Chrysoperla carnea + 5 releases of Trichogramma chilonis + Pheromone trap + yellow + blue sticky trap) and T3 (two releases of C. carnea + 5 releases of T. chilonis + yellow + blue sticky trap) were found more effective against the population reduction of aphids, leafhoppers and whiteflies. Shoot damage (10.45 to 11.36) and fruit damage (15.36 to 16.14) were low in T4 (two releases of C. carnea +5 releases of T. chilonis + Pheromone trap + yellow + blue sticky trap) and T2 (C. carnea +T. chilonis +Pheromone trap) when compared to other treatments. The number of coccinellid adults (7.8 number/ plant), syrphids (1.5 number/ plant) and spiders (3.0 number/ plant) were also recorded more in T1 (two releases of C. carnea +T. chilonis) and T2 (C. carnea +T. chilonis +Pheromone trap) than other treatments.