Garlic purple spot is a fungal disease, which is caused by infection with Aspergillus subsp. The main damage to the leaves, the beginning of the white spots on the leaves slightly concave small spots, the central purple, enlarged yellow-brown spindle-shaped or oval lesions, humidity, diseased parts produce black mold, lesions with more concentric The ring pattern is easy to break off from the disease department.
Control methods 1. Apply base fertilizer and strengthen field management. 2. In the early stage of disease, 10% difenoconazole water dispersible granules 45-112 g/ha, 50% isoprenil wettable powder 1500 times, and 2% antimycotic water 200 times spray can be used. Once every 7 days, use it 2-3 times in succession.
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