How to prevent and control spring rot in spring garlic? These key points you need to master
Spring rot of garlic can last until mid-June, and in years with low temperatures and high humidity, it even continues until the harvest period. It mainly affects the base of the leaf blade of the lower leaves. Water-soaked softened lesions appear, and after expanding upward and downward, they become light brown rot. In the middle and late growth stages, the central leaves are affected, and the soft rot spreads to below the flower stalk. Sometimes it can cause new...
Spring rot of garlic can last until mid-June, and in years with low temperatures and high humidity, it even continues until the harvest period. It mainly affects the base of the leaf blade of the lower leaves. Water-soaked softened lesions appear, and after expanding upward and downward, they become light brown rot. In the middle and late growth stages, the central leaves are affected, and the soft rot spreads to below the flower stalk. Sometimes it can cause the newly formed bulbs to rot. After the leaves are affected, the number of leaves decreases, and bulb enlargement is hindered. When the leaf sheaths near the ground are affected, cracks appear on the bulb, and quality declines.
At the early stage of disease onset or the beginning of its spread, you can choose 47% kasugamycin·copper oxychloride wettable powder at 700 times dilution, or 78% bordeaux mixture·mancozeb wettable powder at 500 times dilution, 50% chlorobromoisocyanuric acid soluble powder at 1200 times dilution, 53.8% copper hydroxide dry suspension concentrate at 1000 times dilution, etc. for spray control, once every 7 days, for 2 to 3 consecutive applications.