Fruit growers who cultivate citrus should pay attention to the occurrence of citrus canker disease in May with high temperature and high humidity. When plants are seriously affected, they will cause fallen leaves, fruit drop, and dead shoots. Citrus ulcer disease bacteria are bacteria. By wind, rain, insects and foliage contact for short distances. The incubation period is 3-10 days, usually 4-6 days. It happens continuously during high temperatures and rain. Oranges, lemons, and pomelos are more susceptible to disease. Spray 30% Bacteria 400-600 times, or 70% Fucun 1200-1400 times, or 77% Oleex 1000 times before and after rain or early onset; spray 50% Carbendazim WP 800-1000 after onset Double fluid.
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