Prevention and treatment of Peach Leafhopper
Harmful symptoms are caused by adult nymphs sucking sap. Early sucking flower buds, petals, after flowering sucking leaves, the victim leaves appear chlorotic white spots, when the whole tree leaves pale, early leaves, so that the tree is weak. Occurs 4 to 6 generations a year. Adults spend winters in evergreen trees or weeds such as pine and cypress near Taoyuan. The second generation lived in the early germinating weeds and vegetables in mid-March. When the peach trees sprouted, they started to move to the peach trees. Most of them were concentrated on the peach trees. Peach trees had the highest density of insects from July to September. In September, the last generation of adults occurred. After the fallen leaves of peach trees migrated to overwintering sites for wintering.
Control methods 1. Adult larvae should scrape off scaly skin immediately before removing fleas, remove fallen leaves and weeds, and reduce overwintering insect sources. 2. Chemical control. In the following three key periods, spraying control: the shoot growth after the new shoot of Xiehua, the hatching of the first generation of nymphs in late May, and the incubating period of the second generation of nymphs from late July to early August. The following pharmaceuticals can be used: 5% cypermethrin EC 2000~3000 times, 20% chloramphenicol 3000 times, 20% speed kill 3,000 times.
Guangdong Jia Mei Biological Technology Co.Ltd , https://www.jaymeimask.com