How to prevent Lagerstroemia indica?

Lagerstroemia indica: It mainly harms Lagerstroemia indica, pomegranate and mulberry. Adults and nymphs harm bud axils, leaves and branches, and secrete honey dew, which leads to blackening of branches and leaves, falling off leaves, affecting growth and losing ornamental value. /kloc-0 2-3 generations per year. Nymphs overwinter in gaps between branches. It is harmful to continue feeding in the coming year. In April, the mature male nymph pupated and emerged, mated with the female insect, and died shortly after mating. Female adults began to lay eggs in early May. Nymphs hatch from the end of May to the beginning of June. The second generation of female adults laid a lot of eggs in the first half of August. From late August to early September, a large number of nymphs hatch and develop irregularly. There are overlapping generations. Insects are mostly distributed in cracks and depressions in branches and trunks. A few are distributed at the base of leaf back, and there are more shady sides than sunny sides on branches. Prevention and control method: 1. Scrape off trunks and branches with bamboo pieces or brushes. 2. At the end of incubation, nymph can be sprayed continuously for 2-3 times, 25% phoxim 600-800 times and 40% phoxim EC 1500-2000 times. 3. Combine pruning, clearing and burning insect branches.