Compatibility of entomopathogenic nematode, Steinernema sp. and egg parasitoid, Trichogramma japonicum with insecticides

Abstract

An attempt has been made to understand the effect of some commonly used insecticides for survival of EPN, Steinernema sp. and egg parasitoid, Trichogramma japonicum. Observations on survival of EPNs and adult Trichogramma emergence were considered to calculate percent mortality for each. Emamectin benzoate 0.25 + Cartap hydrochloride 7.5 G caused highest mortality (65.79%) of Steinernema sp. followed by 34.12% in Cartap hydrochloride 4 G. The lowest mortality (0.92%) was observed in Chlorantraniliprole 0.4 G followed by Carbofuran 3 G (2%) and Fipronil 0.4 G (2.82%). The percent mortality in adult emergence of Trichogramma japonicum was highest in Chlorpyriphos 20 EC (99.14%) followed by Lambda cyhalothrin 5 EC (86.80%) and Chlorfenapyr 10 SC (81.92%). However, moderate mortality was found by Fipronil 5 SC (51.97%) followed by Imidacloprid 17.8 SL (38.36%). Whereas, the lowest mortality was observed with Flubendiamide 39.35 SC (1.83%) followed by Chlorantraniliprole 18.5 SC (6.37%), Emamectin Benzoate 5 SG (12.12%), Spirotetramat 15 OD (23.27%) and Azadirachtin 1 EC (24.02%). So, there is possibility for integration of Steinernema sp. with granular formulation of Chlorantraniliprole, Carbofuran and Fipronil.