Common diseases of red maplepowdery mildew:This disease occurs in the autumn of each year, can survive the winter, and can be spread through rain and air, causing the plant to shed leaves prematurely, seriously damaging the beauty of the plant; Bacterial perforation:When the temperature is 25 degrees, the disease is prone to occur if other pests invade. In severe cases, the entire plant will die. Leaf spot:It occurs from June to September, mainly caused by high temperature and high humidity; Prevention and control measures:In the early stage of the disease, you can use relevant pesticides to spray and enhance air circulation. After winter, cut off all the branches and leaves that have been eroded, including the old, weak and diseased branches. Then remove all the fallen leaves in the potting soil and turn the soil. At the same time, trim the overcrowded plants. If the situation is serious, you can change the soil, but the original soil must be cleaned. Red maple pests: scale insects, whiteflies, mites, aphids, etc.Time of appearance:It is very likely to occur in hot weather and high humidity environment. Prevention and treatment methods:In the early stages of the disease, you can use relevant pesticides to spray and kill the pests, or capture them manually. Cut off and destroy all the parts that are severely eroded. Pruning and turning the soil are also necessary in winter, because insect pests can easily overwinter in the soil, and will wake up when the temperature is suitable the following year to continue to harm the plants. If the situation is serious, you can change the soil, but the original soil must be cleaned. |
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