The characteristics and control methods of garlic leaf blight
(1) Symptoms are mainly harmful to leaves and pedicels. Leaf disease mostly begins at the tips of the leaves or other parts of the leaves, the first was a small round white flowers, expanded into an irregular or oval gray or gray-brown lesions, which gave birth to black mold, severe disease leaves dead . Do not twitch when there is a serious injury. A combination of downy mildew or purple spot occurs frequently.
(2) Prevention and control techniques 1 Remove the damaged leaves in time.
2 Strengthen the management of the field, make it densely planted, drain it in time after the rain, and improve the host's resistance to disease.
3 Spray 75% chlorothalonil wettable powder 600 times at the beginning of the disease, 50% acetaminophen wettable powder 1500 times, 64% antitoxic WP 500 times, 60% phosphine 500 times wettable powder The liquid or 1:1:100 Bordeaux mixture is administered once every 7-10 days in a row and continuously controlled for 3 to 4 times.
Note that the pesticide is collected after the pesticide interval.
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