Effect of some newer insecticides on parasitisation by Trichogramma species under laboratory condition
YV Deshmukh, DB Undirwade and SM Dadmal
The experiment was conducted in order to study the toxicity of different insecticides on percent parasitization and adult mortality of different Trichogramma species under laboratory condition during year 2015-2016 in the Bio-control Laboratory, Department of Entomology, PGI, Dr. PDKV, Akola. Experiment was conducted with four different insecticides (Chlorantraniliprole 18.5%SC, Flubendiamide 480SC, Diafenthiuron 50% WP and Azadirachtin 10000 ppm) and a control on three different species of Trichogrammaviz;T. chilonis, T. pretiosum and T. japonicum in Factorial completely randomized Block design of experiment. Effect of these insecticides on percent parasitization of Trichogramma species was studied. Results revealed that Chlorantraniliprole, Flubendiamide, Diafenthiuron and Azadirachtin found harmless when irradiated Corcyra eggs were exposed to Trichogramma spp. and had 59.80%, 68.06%, 58.20%, 72.93% parasitization, respectively. While Chlorantraniliprole (59.49%) and Diafenthiuron (59.02%) registered as slightly harmful on unirradiated Corcyra eggs as per the IOBC protocol.