Where's Ziwei?

Lagerstroemia indica: It occurs 5-8 generations every year in northern China, with eggs overwintering near the bud tip, with May-July as the initial onset and June-June as the peak. The aggregation of nymphs and adults harms young leaves, sucks juice and affects growth and development. Precautionary measures: Scrape the old bark in early spring, cut off the broken branches, focus on burning and destroy the overwintering eggs.

Strengthen cultivation management measures to reduce the occurrence of diseases.

When the aphid quantity is large, cough up 40% omethoate, 40% acephate 1000- 1500 times or spray 1000-2000 times derris seed, but pay attention to avoid phytotoxicity.

Where conditions permit, natural enemies such as harmonia axyridis and grassridge larvae will be artificially propagated and spread.

Trap and kill sticky-winged aphids with colored plates or refuse to live and migrate with white tin foil reflection.