ẢNH HƯỞNG CỦA MỘT SỐ THUỐC BẢO VỆ THỰC VẬT SINH HỌC TRONG PHÒNG TRỪ SÂU HẠI CÂY DÂU VÀ CÂY TRỒNG XEN DÂU ĐỐI VỚI CON TẰM

The study results showed that all four biological drugs and herbs are Angun 5WDG, Silsau super 5WP, Sokupi 0.36 AS and Dylan 2EC have highly effective in preventing harmful mulberry leaf rollers. The results of the impact assessment of plant protection drugs used in pest control on mulberry trees and trees intercropped with mulberry for silkworms to show that the all drugs after spraying pest on mulberry trees and trees intercropped with mulberry if not yet ensure enough time to isolation, pickers the mulberry leaf rearing silkworms are severely affected to the silkworms, leading to reduce yield, quality cocoons. The level of damage depends on the type of drug and the time to pick mulberry leaves after spraying to rearing silkworms, after spraying the shorter the time is, the more harmful it is to the silkworm. Time safety of isolation for the silkworm is 11 days after spraying drugs Angun 5WDG, Dylan 2EC and the time safety of isolation for silkworms is 13 days if using the drug super Silsau 5WP, Sokupi 0.36 AS insect pests mulberry tree or trees intercropped with mulberry