How to prevent and treat Li Shushan?

Hawthorn leafhopper, also known as Hawthorn red spider. The main damage is peach, cherry, plum, apricot, apple and pear tree species.

Injury. In order to make pupa, cubs, if 螨 suck buds, leaves juice. In the early stages of the damaged leaves, the pale green chlorosis spots gradually turned brown, and when the leaves were severe, the leaves scorch and fall off earlier. When the overwintering base is too large, the newly sprouted buds are killed and red-brown sap flows out. The buds grow badly and even die.

Prevention methods.

1 Combine the pruning of the clean garden, scrape the old chapped skin, sweep away fallen leaves and weeds to eliminate the overwintering female adults.

In December, an insect trap was attached to the upper part of the trunk and the wintering female adults were trapped. After the trap, they were cleared and burned in December.

3 Spray 5 Baume degree lime sulfur before germination. After the leaves are displayed, the wintering female larvae emerge in the flood season and the first-generation eggs hatch, and the 2.5% wettable powder WP is sprayed with 600-1000 times liquid. In severe cases, it can be sprayed with 15% ChrysolTM 2000 times, or 20% with Suspension 2000x, or 10% Chrysanthemum 4000-5000 times, or 15%. Twist decaffeinated 2000 times, or 25% triazolyene 2000 times, or 1.8% avermectin 5000-6000 times.

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