What are the diseases and pests of ash trees? How to eliminate and prevent them?
A brief knowledge sharing with you about the diseases and pests of ash trees and how to eliminate and prevent them in the field of green plants and flowers. Next, the editor of this site will introduce to you.
Ash tree, scientific name Fraxinus chinensis, is a common deciduous tree, loved by people for its beautiful shape and high ornamental value. However, ash trees may suffer from various diseases and pests during growth, affecting their growth and ornamental value. This article will introduce several common diseases and pests of ash trees and their control methods.
1. ——Ash Tree Rust——: This is a fungal disease that mainly affects the leaves of ash trees, causing yellow spots on the leaves, and the leaves may turn yellow and fall off in severe cases. Control methods include reasonable pruning, maintaining ventilation and light, reducing the environment for pathogen growth; in the early stage of the disease, fungicides such as carbendazim and mancozeb can be sprayed.
2. ——Ash Tree Dieback——: Dieback is caused by fungi, mainly manifested as the death of branches, which can lead to the death of the entire plant in severe cases. Control measures include promptly cutting off diseased branches to reduce the spread of pathogens; and regularly spraying fungicides for prevention during the growing season.
3. ——Ash Tree Aphids——: Aphids are one of the common pests of ash trees,吸食 the sap of plants, causing leaf deformation and yellowing. Control methods include using yellow sticky traps to attract aphids and reduce their numbers; during the peak period of aphids, insecticides such as pymetrozine can be sprayed.
4. ——Ash Tree Longicorn——: Longicorn is one of the main pests of ash trees, with larvae boring into the trunk, causing tree death. Control measures include regularly inspecting trees, dealing with pest damage in a timely manner; and using green thunder and other agents for spray control during the adult stage of longicorn.
5. ——Ash Tree Red Spider Mite——: Red spider mites mainly harm the leaves of ash trees,吸食 leaf sap, causing yellow spots or leaf death. Control methods include keeping the environment around the plant clean to reduce the breeding of red spider mites; when red spider mites occur, miticides such as damalin and abamectin can be sprayed.
6. ——Ash Tree Scale Insect——: Scale insects mainly harm the branches and leaves of ash trees,吸食 plant sap, affecting plant growth. Control measures include strengthening the care and management of plants to improve their resistance to pests; when scale insects occur, agents such as lime sulfur mixture and machine oil emulsion can be used for spray control.
In the process of controlling diseases and pests of ash trees, the following points should be noted:
- ——Integrated Control——: Combine physical, chemical, and biological control methods to form an integrated control system.
- ——Prevention First——: Before the occurrence of diseases and pests, strengthen the care and management of plants to improve their resistance to diseases and pests.
- ——Rational Medication——: When using chemical agents, strictly follow the instructions to avoid misuse and overuse, and reduce the impact on the environment and human body.
Through scientific management and reasonable control measures, the diseases and pests of ash trees can be effectively controlled, ensuring their healthy growth and displaying their ornamental and ecological value.
The above introduction about the diseases and pests of ash trees and how to eliminate and prevent them, hope it brings a little help to your life!