2. Common diseases of rubber trees and their control methods.
3. Common pests and diseases of oak trees.
4, rubber tree pest control.
1. Rubber trees are generally kept at home. In a closed environment, if it is not properly maintained, it may also breed pests and diseases.
2. The main diseases are anthracnose, leaf spot and gray mold, which mainly harm leaves. The diseased leaves can be removed and sprayed with 5% zineb 500 times solution.
3. Insect pests are harmful to scale insects and thrips. Remove insect branches and leaves, remove dead branches and rotten leaves in autumn and winter, and then spray 40% omethoate EC 1000 times.