Winter and spring control of common fruit tree pests

1. Pyrosphaeridae: The larvae in the barks of the mature larvae live overwintering in the gaps of the barks, and they are shed in the early April of the following year. Control methods: In the early spring, the fruit trees are promptly scraped off the rough skin and cracks on the trunk and the branches, and the dander is collected and burned. 2. Pyrus borealis: Overwintering in the buds of fruit trees with small larvae, and with the sprouting of tree buds in late spring, it begins to pupate. And it turned to harm new shoots. Control methods: can be combined with fruit trees in winter cut, carefully cut in addition to insect bud shoots, or inspection of tree buds in early spring, found that pests of the bud should be removed as soon as possible; will be eliminated in the bud before the harm. 3. Pyracantha caterpillars: larvae live in winter in winter branches of branches and trunks, and mostly overwinter in the soil of young tree trunks. Control methods: In the early spring, scrape off the rough skin and cracks on the branches and burn them centrally. The young garden can be used to exterminate the soil around the base of the trunk. 4. The leaf roller moth: The larvae hide in winter in the dead skin around the old bark, cracked skin, and large saw blades. When the tree buds sprout in the spring of the following year, the overwintering larvae move out. Control methods: The old skin on the trunk was completely scraped off before the buds sprouted early in the early spring, and the sawn cut was cut and burned. It is also possible to spray 80% of dichlorvos EC 1000 times on trunks and stems at the beginning of the overwintering larvae.

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