Peach one point leafhopper is also known as peach small green leafhopper, one point leafhopper, peach little spotted leafhopper, commonly known as floating dust. It belongs to the order Homoptera, Leafhopper family. It occurs widely on cherry and other fruit trees. It is mainly harmful to cherry, peach, plum, apricot, apple, pear, grape and other fruit trees, but also to harm the moon season, osmanthus flowers, plum blossoms and so on.
First, the morphological characteristics of the peach leafhopper
1. Adult insects are 3.0 to 3.3 mm long, and all are yellow-green or dark green. The top of the head is blunt and round, with a small black dot at the top, and a white halo around the black dot, so it is called a peach leafhopper. The forewings are pale green translucent with yellowish-green veins, while the hindwings are colorless and transparent, with pale black veins (Figure 6-14). Fig. 6-14 Peach leafhopper adult
2. Nymphs Elderly nymphs are 2.4 to 2.7mm long, all green, compound eyes purple-black, wing buds green.
3. Ovate Kidney-shaped, about 0.8mm long, milky white, translucent.
Second, peach a little leafhopper is harmful symptoms
Adults and nymphs sting plant sap. Early intake of young shoots, leaves and flowers. After the flowers fall, they feed on the back of the leaves, and the damaged leaves appear to have lost greenish-white spots. In severe cases, the whole leaf leaves are pale, the leaves fall early, the tree declines, the adults lay eggs in the bark of the branches, causing branch damage, increased water evaporation, affecting safe overwintering, causing strip extraction or frost damage, affecting the development and formation of flower buds in the following year. Moreover, fruit virus disease can also be transmitted.
Third, the occurrence of peach leafhoppers occurs regularly
From north to south, peach leafhoppers occur in 3 to 6 generations a year. Adults overwinter in deciduous leaves, weeds, stone crevices, and bark crevices. In the spring of the following year, when the cherry tree sprouts, it begins to infest the tree and lays eggs in the main vein tissue of the leaf. The eggs are scattered, leaving long brown lobes after hatching. Nymphs prefer to live in groups on the back of the leaves, crawling or jumping when frightened. July to September is the peak period of the year, with overlapping generations, a large number of insect populations and serious pests.
Fourth, peach a little leafhopper control method
1. Artificial prevention and control. After the fruit trees have fallen, the weeds and leaves in the garden are thoroughly cleaned up, and they are buried deep or put into the biogas pond to eliminate the source of wintering insects. Using the phototropism of adult insects, set up starlight lamps to trap adult insects.
2. Chemical control. In the spring cherry tree budding found that the leafhopper occurred as a pest, with 10% imidacloprid wettable powder 4000 times liquid, or 3% acetamidine emulsion 2500 times liquid, or 25% pyrithodone suspension 2000 ~ 3000 times liquid evenly sprayed leaves; after summer cherry picking, leafhoppers in the early heyday, the tree sprayed 4.5% high-efficiency cypermethrin emulsion 2000 times liquid.