Symptoms and Control Methods of Apple Mosaic Disease
Today, we will discuss the symptoms and control methods of apple mosaic disease, a related topic in the cultivation of flowers. Below, the editor will provide you with detailed answers.
Symptoms and Control Methods of Apple Mosaic Disease
When apple mosaic disease occurs, its leaves appear bright yellow, and the symptoms vary greatly depending on the severity of the virus. There are mainly five types: mottling, mosaic, streaking, ring spots, and edge wear, each with three diseases: severe mosaic, mild mosaic, and vein变色 type. When apples contract mosaic disease, it is necessary to use aqueous solutions for spraying promptly, or fertilize with zinc, molybdenum, phosphorus, potassium, and copper during the early growth stage of apple trees to enhance disease resistance and reduce the occurrence of diseases.
Symptoms of Apple Mosaic Disease
1. Severe Mosaic Type: In early summer, large areas of chlorosis appear on the leaves of apples, which turn bright yellow and then white. Young leaves show mottling along the veins, and old leaves develop large necrotic spots, often causing defoliation.
2. Mild Mosaic Type: Only a few leaves of apples have a few yellow dots, and there is很少 leaf drop, which is not easily noticed. Attention must be paid to observation.
3. Vein Color Change Type: The color change along the main and lateral veins is very distinct, often forming a yellow network along the fine veins, with many small spots between the veins, and less defoliation.
Apple Mosaic Disease Hazards
Apple mosaic disease primarily affects leaves, with lesions appearing bright yellow. Due to the severity of the disease, symptoms vary greatly, mainly including mottling, mosaic, streaking, ring spots, and edge wear, with various symptoms often appearing on the same tree.
Causes of Apple Mosaic Disease
Apple mosaic disease is caused by the infection of apple mosaic virus strains such as the apple mosaic virus and the tularensis apple mosaic virus. Prompt treatment is necessary when it occurs.
What Medication to Use for Apple Mosaic Disease
Appropriate medications for apple mosaic disease include malachite green zinc acetate, 1.5% plant disease terminator emulsion diluted in 1000 kg of water, or chitosan diluted in 500 kg of water, alternately sprayed every half month, with 2-3 applications.
Methods to Prevent and Control Apple Mosaic Disease
Control Methods for Mosaic Disease
For apple mosaic disease, you can use a dilution of 300-500 times of fruit tree virus, with 40g of medicine mixed with 15kg of water and a pack of pure milk sprayed on the plants, which can effectively control the virus.
Preventive Measures for Mosaic Disease
When preventing apple mosaic disease, it is first necessary to cultivate virus-free seedlings and properly apply fertilizers such as zinc, molybdenum, phosphorus, potassium, and copper to apple trees to enhance disease resistance, combined with chemical agents for control.
The detailed explanation of the symptoms and control methods of apple mosaic disease provided above is hoped to assist you in green plant management!