Common Pests of Ginkgo and Their Control

Common pests of ginkgo: Ginkgo moth

harm

In severe cases of insect infestation, all the leaves will be eaten, resulting in a bare crown, which will affect the yield and is not conducive to flowering and fruiting in the second year.

Prevention and treatment methods

① Generally in mid-to-late July, mature larvae are killed manually, and the cocoons are collected and burned. The egg masses can be removed manually in winter.

② Generally in September, before the female moth lays eggs, you can use black light to lure and kill adult moths.

③For larvae, you can spray with 500 times diluted 25% insecticide.

Common pests of ginkgo: Ginkgo leaf roller

harm

Generally, the larvae bore into short branches and growing branches, causing all the leaves and fruits on the short branches to die and fall off, and the long branches to wither and break.

Prevention and treatment methods

①In April, adult insects can be caught manually in the early morning.

② Manually prune off the damaged branches and burn them in a centralized manner to kill the larvae and reduce damage.

③ Strengthen management and improve tree resistance.

④ During the damage period, spray 800 times of 80% DDT and 1000 times of 40% omethoate mixture.

Common pests of ginkgo: termites

harm

Termites are pests of the trunk. They will eat the wood of the trunk, making it impossible for Ginkgo to get a normal water supply.

Prevention and treatment methods

First, you need to determine the location of the ant nest, which can be determined based on the termites' excrement, ventilation holes, etc. Then drill a hole and inject about 10 ml of insecticide plus 10% ant killer. Generally, the entire colony of termites will die 3-7 days after application of the pesticide.

Common pests of ginkgo: tea yellow thrips

harm

It usually occurs between June and August. Adult insects often gather on the back of leaves to suck the sap of young leaves, causing the leaves to lose their green color and turn grayish white. In severe cases, the leaves dry up and fall off.

Prevention and treatment methods

You can spray 50% cypermethrin, or use 3000 times diluted cypermethrin, or 1000 times diluted 40% oxydemeton-methyl emulsifiable concentrate for spraying. The first spraying is usually carried out in mid-June, and the second in mid-to-late July. If the pest is not serious, spray twice.