Autumn radish virus disease

The main symptoms are manifestations of heart veins, gradually forming leaf spots. The leaves are shriveled, deformed, and in severe cases the herpes-like leaves appear in the diseased plants. Radishes grow slowly and are of low quality. Another symptom is the appearance of many dark spots with a diameter of 2 to 4 mm on the leaves, and black streaks on the stems and leaves. Sometimes mixed with the former.

There are obvious differences in disease resistance among the control measures. Generally, the system of blue skin is more resistant to disease, and disease-resistant varieties can be selected according to the requirements of cornices and markets. The autumn radish should not be sowed in drought years. The sorghum should be broadcast live and watered at the seedling stage to reduce the temperature of the soil. It is appropriate to set the seedlings at an early date and leave disease-free strains selected. Interplanting with field crops significantly reduces the disease. In the early stage of onset, 20% of virus A WP 500 times or 1.5% of diseased lingering emulsion 1000 times is sprayed once every 7 to 10 days, and 2 to 3 times of continuous prevention and treatment are performed. In addition seedlings should also pay attention to the control of aphids and yellow striped jump.

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