Garlic planting techniques: how to control garlic leaf blight?

How to prevent and cure garlic leaf blight? Please give an introduction to garlic leaf blight and control methods for reference: first, symptoms: mainly harmful leaves or pedicels. The disease of leaves usually begins at the tip of leaves or other parts of leaves, and the flower white dots are enlarged and then show irregular or oval gray-white or grayish-brown disease spots, on which black mildew occurs, and in severe cases, the diseased leaves die. Pedicel infection is easy to break from the disease department, and finally many small black spots are scattered in the disease department. Do not bolt when the damage is serious. Second, the pathogenic factors: the mycelium or ascomycetes overwintered in the soil with the remains of the disease, and the initial infection was caused by the cyst in the following year, and the conidia were produced in the later part of the disease for re-infection. This strain is a weak parasite and is often associated with downy mildew or purple spot. Third, prevention and control measures: (1) timely removal of damaged leaves and pedicels. (2) strengthen field management, reasonable close planting, timely drainage after rain, and improve the disease resistance of the host. (3) at the beginning of the disease, spray 75% chlorothalonil wettable powder 600x liquid, or 50% prohydantoin wettable powder 1500 times liquid, 64% alum wettable powder 500x liquid, 50% succinic fertilizer copper acid wettable powder 500x liquid, 60% ethyl phosphine aluminum wettable powder 500x liquid, 14% ammonia cupric solution 300x solution, 1jade 1l100 Bordeaux solution, once every 7 days for 3-4 times. Click to get more garlic planting techniques click to get more vegetable planting techniques