2. What should I do if there are black spots on poplar leaves?
3. What are the long black spots on poplar leaves?
4. What if there are black spots on poplar leaves?
1. The long black spot of poplar leaves may be caused by black spot disease, and it should be treated and treated in time after it is found.
2. The diseased leaves can be cut off and sprayed with corresponding drugs for prevention and treatment.
3. Specifically, 5% zineb 500 times solution can be sprayed three or four times continuously.
4. It is also possible that there is an invasion of Liriomyza sativae, and when the pest is serious, it should be treated with drugs.
5. Specifically, 50% dichlorvos EC or 40% dimethoate EC 1000- 1500 times can be sprayed.