Autumn tomato must prevent three types of rotten fruit disease

Autumn tomatoes result in rotten fruit. The causes are related to the three diseases, and prevention and control should be strengthened.

First, soft rot

Soft rot is a bacterial disease that infects stems and fruits. When the fruit is onset, the peel is bright, the flesh rots and becomes soft, and after the rupture, it emits offensive odor, easily falls off, and turns into a white, stale fruit after drying.

There are three methods for the prevention and control of soft rot: First, avoid pruning on rainy days or when the dew is dry to promote wound healing as soon as possible to prevent the invasion of bacteria; Second, timely control of fruit pests such as cotton bollworm, etc.; Before or at the onset of disease, 72% of streptomycin sulfate-soluble powder or 4000% of enemy powder is sprayed at 1000 times, and sprayed once every 8 to 10 days. The number of sprays depends on the condition.

Second, brown corruption

Brown spoilage disease is a fungal disease. It mainly affects fruits that are close to ripening. It often produces light brown spots on the fruit's shoulders and near the fruit's top. Concentric ring lentigs appear later. The fruit's surface is smooth and does not soften. A gray moldy layer appeared.

There are three methods for preventing and treating brownish corruption: First, removing diseased leaves and diseased fruits in time to remove the diseased plant residues on the remnant land; Second, the tomatoes cultivated in plastic greenhouses or greenhouses must be strengthened with temperature and humidity management, and timely release and temperature control. The third is in the early onset of the disease with 25% of the diarrhea mold 800 to 1000 times or 75% chlorothalonil 600 to 800 times spray, spray every 7 to 8 days, and even spray 2 to 3 times.

Third, anthrax

Anthracnose pathogenic bacteria in the fruit before the coloring, after the disease lurking to the color, the emergence of a small transparent spots, and then the lesions gradually expand and turn black, slightly sunken, with black spots on the top, the disease will be secreted in wet conditions Red mucus, the last fruit rotted off.

There are three methods for the prevention and control of anthrax: one is to implement a two-year rotation with non-tomato vegetables in the severe disease field; the second is to remove the source of the disease, remove the diseased fruit in time, prevent the bacteria from re-infection, and thoroughly remove ground disease residue after fruit picking , Centralized burning; the third is in the green fruit period with 80% anthrax Fumei WP 800 times or 50% carbendazim WP 500 times spray, spray every 8 to 10 days, even spray 2 times You can.

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