: The toxic effect of Acetellic was tested against adults of Callosobruchus chinensis. LD50 for Acetellic was found to be 0.5559 ppm while 0.9 ppm caused 100% moi tality after 48 hours. No treatment resulted in no mortality. There was a significant reduction in number of eggs between the treated and the control insects. The number of the eggs deposited decreased with the increase in the concentration of the insecticide.
