EFFECT OF AGROCHEMICAL POLLUTION ON THE MULBERRY SILKWORM, BOMBYX MORI L

V- SUMMARYThese trials were conducted in the fields at Zagazig district and Silkworm Laboratory, Sericulture Department of Plant Protection Research Institute, Sharkia Branch during of spring seasons 2001 and 2002. The fourth and fifth larval instars of mulberry silkworm, Bombyx mori L. (monovoltine Chinese hybrid 9F7X) were used in the present investigation.PART1: LABORATORY TRIALS1. Toxicological effects of some agrochemicals on silkworm B. mori larvae1. Larval mortality percentageSummarized results of larval mortality clear that the tested compounds caused mortality to B. mori treated larvae, but the profenofos and esfenvalerate were more toxic, where the highest mortality (93 and 92 %) was recorded at relatively lower doses of the two compounds. The larvae fed on treated mulberry leaves were affected more than that exposed to treated plates by the same compounds. The topical applications proved the most hazardous and harmful technique, recording relatively higher mortality rate ranged 70 – 93 and 71.3 – 92 for