Pest control of Lagerstroemia indica

In early spring, white powder appeared on the branches and leaves, which stopped growing, the number of branches was small, and the branches were twisted, which seriously affected the growth and appreciation. The control method is to spray 20% triadimefon 1500 times solution in April and May.

aphid

The occurrence period is long, and the harm is rampant from June to August. Damaged leaves turn yellow, black rust falls off and serious plants will die. The control method is 10% pyridaben 2000 times. Early prevention and control should be carried out in April-May in early spring, and June-August is the peak period of aphids, and treatment should be carried out every month.