Assessment of toxicity of different doses of acetamiprid 20 SP to the egg parasitoid, Trichogramma chilonis (Ishii) (Hymenoptera: Trichogrammitidae)

The results revealed that the effect of acetamiprid 20 SP on T. chilonis @ 10, 20, 40 and 80 g a.i./ha was less adverse on adult emergence after 24 h (69.00 and 77.00%) and 48 h (81.33 and 91.00%) of treatment while standard check, monocrotophos 36 SL @ 200 g a.i./ha was relatively more toxic when compared to untreated check after 24 and 48 h of treatment. Moreover, the highest parasitisation (81.00 and 91.33%) was recorded in the untreated check which differed significantly from other treatments followed by acetamiprid 20 SP at 10 g a.i./ha (73.00 and 86.00%). Overall acetamiprid did not show any ovipositional deterrence and T. chilonis, recorded more than 72.00% parasitism. Similarly adult emergence was also not affected and also there was no ill effect on the developing parasitoids and emerged adults.