The Causes and Treatment of Apple Tree Yellow Leaf Disease
Today, I will introduce the knowledge about the causes and treatment methods of apple tree yellow leaf disease. Next, the editor will provide an introduction.
The Causes and Treatment of Apple Tree Yellow Leaf Disease
The magic potion for apple tree yellow leaf disease is the fruit tree regreening agent, which can be injected into the trunk of the plant to quickly restore the leaves to normal. If the yellowing is caused by iron deficiency, spray ferric sulfate solution. If it is caused by soil drought, spray clean water on the tree canopy and water more on the tree base. If it is caused by chemical damage, rinse the plant with water to wash away the chemicals, and for fertilizer damage, water the roots of the plant to dilute the fertilizer.
What is Apple Tree Yellow Leaf Disease
1. Iron Deficiency: If there is a lack of iron in the soil during the cultivation of apple trees, it can cause the new leaves at the top of the new shoots to turn yellow-green or yellow-white.
2. Soil Drought: Due to prolonged drought without rain, the soil lacks moisture, the tree lacks water, and the leaves become yellow-white, especially on the side of the tree canopy facing the sun, with severe cases showing yellow and dry leaves.
3. Chemical and Fertilizer Damage: Improper methods of spraying pesticides and fertilizers on apple trees can cause yellowing, for example, high concentration of pesticide spray, excessive application, usually the leaf tips turn yellow first, then become rusty, and excessive fertilization at the base of the tree can cause yellowing of the lower leaves, expanding upwards.
Treatment of Apple Tree Yellow Leaf Disease
1. If the yellowing is caused by iron deficiency, apply organic fertilizer, improve soil structure, deep plow, mix ferric sulfate with livestock manure at a ratio of 1:100, or spray ferric sulfate solution in the early stage of tree germination.
2. If the yellowing is caused by soil drought, water the trees if conditions allow, or spray 400 times concentration of Dry Land Dragon to enhance the tree's drought resistance. If drought has already caused yellowing, spray clean water on the tree canopy and water more on the tree base.
3. If the yellowing is caused by chemical or fertilizer damage, rinse the plant with water to wash away the chemicals, or water the roots of the plant to dilute the fertilizer.
4. Magic Potion: The magic potion for apple tree yellow leaf disease is the fruit tree regreening agent, which can be injected into the trunk of the plant to quickly restore the leaves to normal.
Prevention of Apple Tree Yellow Leaf Disease
To prevent apple trees from getting yellow leaf disease, it is necessary to adjust the fertilization ratio by increasing inorganic and reducing organic fertilizers, applying compound microbial fertilizers, doing autumn fertilization, and applying zinc, boron, and calcium elements in autumn. It is also necessary to supplement zinc on the leaf surface in spring.
In addition, it is best to spray 8% ningnanmycin on apple trees from spring to after flowering to suppress viruses and reduce the incidence of disease. It is also important to control aphids and planthoppers throughout the year and disinfect pruning tools to reduce transmission.
The above is the detailed content about the causes and treatment methods of apple tree yellow leaf disease, hoping it can be helpful to you!