Crape myrtle pest control method

Crape myrtle is the most common landscaping plant in life. It has bright green flowers and high ornamental value. It can beautify the environment and purify the air. Crape myrtle is often attacked by pests and diseases during its growth period, which will affect its growth and ornamental value. Therefore, before raising crape myrtle, you must have a comprehensive understanding of its pests and diseases in advance, and know how to prevent and control these pests and diseases.

1. Prevention and control methods of powdery mildew

Powdery mildew is one of the most common diseases of crape myrtle. After the disease occurs, the leaves of crape myrtle will turn yellow and fall off, and other adverse symptoms will directly affect the growth and ornamental effect of the tree. To prevent the occurrence of powdery mildew, you can cut off all the branches that were infected in the year after entering winter, and completely destroy them to eliminate the source of the disease. If powdery mildew occurs in potted plants at home, remove the diseased leaves in time and move the flower pots to a ventilated and lighted place. In addition, after the crape myrtle is infected, you can spray Shibamei for treatment, which can also well control the development of the disease.

2. Prevention and treatment methods of brown spot disease

Brown spot is also one of the common diseases of crape myrtle. It occurs in the peak growth season of crape myrtle. After it occurs, the leaves of crape myrtle will turn yellow and fall off in large numbers, affecting flowering. In the early stage of brown spot, the diseased branches and leaves can be removed in time, and destroyed or buried in a centralized manner to reduce the source of the pathogen. If the disease is serious, 50% carbendazim wettable powder can be sprayed, or 65% mancozeb wettable powder can be sprayed. After spraying, the disease can be well controlled.

3. Prevention and treatment methods of coal pollution disease

Sooty mold is also called sooty mold. It is one of the most common diseases of crape myrtle. Once the disease and pest occur, it will directly affect the photosynthesis of crape myrtle, causing the plant to weaken and fall leaves prematurely. The best way to prevent this disease is drug treatment. Lime sulfur and trithion are commonly used drugs to treat this disease.

4. Prevention and control methods of crape myrtle pests

During the growth period, crape myrtle not only has a high incidence of diseases, but also some insect pests. Yellow thorn moth, aphids, scale insects, etc. are the most common pests of crape myrtle. After these diseases occur, you can directly spray them with drugs. Dichlorvos emulsifiable concentrate, phoxim emulsifiable concentrate and other drugs are commonly used drugs for treating crape myrtle pests. Generally, you need to use the drugs continuously for 2 to 3 times when spraying to kill all the pests.