Cauliflower soft rot disease prevention and control method

Cauliflower soft rot, commonly known as rotten cauliflower, is one of the most important diseases in broccoli production. The disease mainly occurs from flowering to pre-harvest. Recently, some broccoli production areas in the province have already begun to show symptoms, and care should be taken to prevent and treat them as soon as possible.

First, the symptoms

The disease mostly occurs in the flowering period. After the flower ball is affected, the diseased part first shows a translucent water-like shape. As the disease progresses, the diseased area becomes brown soft rot. When the humidity is high, the white bacteria pus can be spilled, and the worms can emit evil. Odor. The main stem or petiole sensation mostly occurs in the wound. The diseased part begins to appear as a dark green water-stained plaque, and then expands into a large rot spot. The diseased tissue erodes and the petiole and even the whole plant collapse.

Second, transmission routes and disease conditions

The disease is a bacterial disease. The bacteria spread through rainwater, irrigation water, fertilisers, or insects and invade the wound. In general, excessive rainfall, excessive irrigation, serious plant diseases and insect pests, extensive management, and many plant wounds, or high humidity in the field, and long time plots of water on the flower bulbs are conducive to the occurrence of the disease.

Third, prevention and control methods

1. Agricultural control. Advocate non-cruciferous vegetables for crop rotation; after cauliflower is harvested, remove the diseased body promptly and improve the pastoral hygiene; adopt high ridge cultivation, intensive cultivation, and avoid flooding irrigation; minimize damage to the plant during the agricultural operation and discover the diseased plant. Remove it in time.

2. Chemical control. At the beginning of the disease, 72% of agricultural streptomycin soluble powder 3000 times solution, 3% of enzymatic wettable powder 600 times, or 25% of metozole wettable powder 800 times can be sprayed. Every 7 to 10 days, 2 or 3 times in a row.

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