The main feature of stinkbug pests that harm kiwifruit is that they have odor glands, which emit a pungent smell when caught. They are all piercing-sucking mouthparts, and live by sucking the juice of plants, and both nymphs and adults can do harm. The damaged parts are branches, leaves, flowers, buds, fruits and young shoots of kiwifruit. After the tissue is injured, local cells stop growing, the tissue dries up and becomes scars, indurations, and depressions, the leaves lose color locally, and the fruit loses its commercial value. Stinkbugs have wings and migrate. Most of them overwinter as adults in old bark, weeds, branches, fallen leaves and soil crevices. It has a scutellum on its front chest and a hard base wing on its back, so it is difficult for chemicals to penetrate, so it needs to be controlled by systemic pesticides.
Overwinter in vines, fallen leaves and soil crevices. It has a scutellum on its front chest and a hard base wing on its back, so it is difficult for chemicals to penetrate, so it needs to be controlled by systemic pesticides.
Leaves after stinkbug infestation
Prevention methods are as follows:
① Remove dead branches, fallen leaves and weeds in winter, scrape off the bark, and carry out composting and burning.
② Take advantage of certain weaknesses in the living habits of some stinkbugs and take corresponding measures to kill them. For example, for harmful stink bugs with obvious feigned death, they can be shaken off at the early stage of stinging and climbing trees, or they can be killed plant by plant and piece by piece in early spring; Collect and kill when clustering, or carry out weeding on tree trunks, lure them to live through the winter, and then burn and kill. Some species mainly live through the winter in the crevices of the bark of the trunk, and they can be killed by scraping the old bark or using a hard brush.
③ 800-1000 times for 25% dichlorvos emulsion, 600-1000 times for 80% crystal trichlorfon, 400-600 times for 25% dichlorvos, etc. The dispensing concentration must be different according to different worm bodies, different worm states, and worm ages. Even if they are both adults, generally the resistance is strong when the temperature is low, the resistance is weak when the temperature is high, and the resistance is weak when the temperature is first eclosion. Before and after overwintering, there is also a big difference in the resistance of stinkbugs. Before overwintering, the resistance was strong, and in the spring of the following year, the resistance was significantly reduced.
