Lagerstroemia indica dripping mucus

It should be caused by pear psylla. After hatching 1 ~ 2 days, the nymph secretes a colorless and transparent linear wax from the tail, then secretes a colorless and transparent viscous liquid to attach around it, and then the mucus gradually increases, embedding the nymph. Nymphs only crawl out of mucus when molting, and continue to produce secretions after molting, so that secretions accumulate in large quantities, and after a certain degree, they drip from leaves to lower leaves, fruits or the ground, so that the fruits are polluted and the quality is reduced. Spirodiclofen, spirodiclofen or the combination of pymetrozine and dinotefuran are selected for control. It is suggested that 0/500 to 2,000 times of water dilution/kloc-is enough, and the drug should be used for flow.