Control effect of 13 insecticides against the eggs of Conopomorpha sinensis Bradley

The litchi Conopomorpha sinensis may be more effectively controlled by killing their eggs. In the present study，the control effect of 13 insecticides were detected by applying to the eggs of the insect. The results showed that，3d after spray with 1000 times dilution，only one product，10% bifenthrin EC，had a 100% killing rate，followed by 2.5% lambda-cyhalothrin EC with 93% killing rate. Six insecticides，1.8% abamectin EC - 480g/ L chlorpyrifos EC（1∶1），35% endosulfan EC，480 g/L chlorpyrifos EC，10% etofenprox SC，1.8%abamectin EC-20% fenpropathrin EC（1∶1），10% chlorfenapyr SC，got a killing rate between 70~80%. 20% fenpropathrin EC and 60g/L spinetoram SC killed about 60% of the eggs.Three products，1.8% abamectin EC，5% spinosad SC and 4.5% beta-cypermethrin EC killed 50% of the eggs；20% 240g/L metaflumizone SC and chlorantraniliprole SC got a very low controlled effect，with only 40% killing rate. It can be seen that Relatively few existing insecticides can be used to control the C. sinensis eggs.