What are the control methods for the ginseng large gray weevil?
The large gray weevil, also known as the snout beetle or "tula lv", has an adult body length of 9-12 mm, grayish-yellow or grayish-black, densely covered with grayish-white scales. The head and rostrum are densely covered with golden shiny scales. The pests occurring this year mainly feed on tender stems and leaves on the soil surface during the seedling emergence period, causing great damage. When disturbed, they feign death and drop to the ground, causing damage in the early morning and evening....
The large gray weevil, also known as the snout beetle or "tula lv", has an adult body length of 9-12 mm, grayish-yellow or grayish-black, densely covered with grayish-white scales. The head and rostrum are densely covered with golden shiny scales. The pests occurring this year mainly feed on tender stems and leaves on the soil surface during the seedling emergence period, causing great damage. When disturbed, they feign death and drop to the ground, causing damage in the early morning and evening. Close attention should be paid during seed germination and the seedling stage (late April).
Control methods: Taking advantage of this insect's gregariousness and death-feigning behavior, manually capture and kill adults before 9 o'clock or after 16 o'clock. During the peak occurrence period, promptly spray 40% acephate emulsifiable concentrate or 50% malathion emulsifiable concentrate, or 40% omethoate emulsifiable concentrate at 1000 times dilution in the evening, all of which have relatively high control efficacy. Taking advantage of this insect's gregariousness and death-feigning behavior, manually capture and kill adults before 9 o'clock or after 16 o'clock.