COMPARATIVE SAFETY OF SELECTED INSECTICIDES TO Distatrix papilionis (Viereck) (BRACONIDAE : HYMENOPTERA), A PARASITOID ON CITRUS BUTTERFLY
In vitro studies were conducted on the comparative safety of some selected insecticides against Divtatrixpapilianis (Viereck), apotential braconid larval pal'asitoid of Papiliu spp. The results revealed that lambda-cyhalothrin, chlorpyrifos and malathion showed quick knock-do\vn effect 1/2 hour after the treatment and recorded 100% mortality \vithin 24 hours after treatment. Least mortality after 24 hours was recorded with azadirachtin (w/w) 0.15% (I3.33%), followed by azadirachtin (EC) 0.03% (26.67%) and imidacloprid (32.2O%) treatments. The residual toxicity tests revealed that lambda~cyhalothrin, chlorpyrifos and malathion \vere highly toxic even 14 days after spraying whereas, imidacloprid and synthetic neem based formulations (azadirachtin \v/\v and azadirachtin EC) were completely non-toxic seven clays after spraying. Thus, these formulations could be included in IPM modules of citrus as they are safe to the indigenous natural enemy, D. papilionir.
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