Copper green tortoise shell

[prevention and control methods]

(1) Control of adults

The above several kinds of beetle adults all have the habit of supplementary nutrition, mainly feeding on the leaves of trees, fruit trees, legumes and other crops. Artificial control and capture of adults can be used in young fruit trees to reduce damage.

(2) Chemical control

2.5% trichlorfon powder, 30 kg per hectare, can be applied to field crops. You can also spray fruit trees and trees with 1000 times of dimethoate or omethoate EC or 3000 times of fenvalerate. For the serious occurrence of dark Gill beetles, drug branches can be used to induce and kill. Cut the strips of elm, poplar and other trees (about 50 cm) and insert them into 40% monocrotophos EC 50 times, soak for more than 10 hours, and insert 75 branches per hectare into the field in the evening.

(3) to control larvae, see Golden Needle. In addition to chemical control, biological control can also be used. Grub natural enemies are rich in resources, parasitic natural enemies are gluteal hook soil wasps, parasitic rate up to 48%, and parasitic grub milky bacteria, has been isolated and screened out Lulu No. 1 strain, sown into the field, the control effect reached 70%.