Radish planting: what diseases does white radish have?

What diseases does white radish have? Please introduce and control the common diseases of white radish for reference: 1. Downy mildew: radish downy mildew mainly harms leaves. The onset of the disease begins with the outer leaf, with light green to light yellow spots on the leaf surface, yellowish brown after expansion, and polygonal due to the limitation of leaf veins. White mildew appeared on the back of the leaves when it was wet, and died when the outer leaves were severe. 72% frost urea manganese zinc wettable powder, or 69% Anke manganese zinc wettable powder 1000 times, or 72.2% Prike 600-1000 times, etc., were foliar sprayed. 2. Black rot: black rot is a disease caused by black rot fungus. the main symptoms are blackening of the root center and blackening and decay of the vascular bundles of fleshy roots. High temperature and heavy rain, excessive irrigation, poor drainage, rotten fertilizer, continuous cropping and man-made wounds or insect injuries are more conducive to the disease. At the initial stage of the disease, 41% of Helike suspension 5000 times, 72% agricultural streptomycin 3000-4000 times or 50%DT wettable powder 3000 times were sprayed once every 7-10 days for continuous prevention and treatment of 2?D3. 3. Virus disease: the virus disease plant is obviously dwarfed, and the leaves are yellow and green alternately or malformed. Aphids are important vectors. The disease is more serious due to extensive field management, high temperature and drought, large number of aphids and jumping beetles or weak plant growth. At the initial stage of the disease, 1.5% of Zhanling 500 times or 20% of virus A wettable powder 500 times can be sprayed for 2-3 times. In order to enhance the resistance of the plant, and pay attention to prevent high temperature and drought. Click for more radish planting techniques click to get more vegetable planting techniques