Chili disease should be treated early

The diseases of the roots of peppers often cause the death of peppers. In severe cases, they die or even die. The root diseases of peppers mainly include three types: the epidemic of pepper, root rot and bacterial wilt. According to the survey, 80% of diseases in the roots of pepper, root rot accounted for 5%, and bacterial wilt accounted for 15-20%. From the trend of incidence in recent years, the proportion of bacterial wilt disease has gradually increased.

Seen from the site of the disease, the epidemic mainly occurred at the base of the stem above the ground surface, resulting in water-stained lesions in the initial stage, large lesions 7-10cm after expansion, and blackish-brown lesions in the late stages. The cortex was softened and rotted, and the stems were atrophied. Root rot occurs below or near the surface of the ground, mainly due to the rotting of the plant's epidermis and its flaking. Bacterial wilt occurs at the root tip, causing the vascular bundle to turn brown.

The prevention and control of chili root disease should be mainly prevention and prevention and control. From the start of seedling raising, to the various links, targeted drug use, you can get twice the result with half the effort.

1. Seedling bed soil disinfection treatment: greenhouse pepper October to October when the nursery, when the ground temperature at 25-28 °C, it is the onset of root disease is appropriate, we must do a good job of soil treatment. The seedling bed soil was selected from the Daejeon soil that had not been planted with eggplant vegetables, and 10 grams per square meter were prepared according to the seedbed area. 70% Phosphorus manganese zinc WP for the disease, 50% carbendazim WP for root rot, 70% DT for wet wilt and wettable powder. Respectively according to the area of ​​the seedbed, take the medicine, mix it, add one kilogram of dry fine soil, and then sprinkle it onto the surface of the mash, smooth the surface, water, sow, cover the soil, and cover the film. It can prevent three kinds of diseases and the occurrence of damping-off at the seedling stage.

2. Sub-seedlings soil treatment: According to the size of the seedlings, divide the seedlings into seedbeds, and then mix each of the above three powders with 10 grams of dry powder and 10 times of dry fine soil. Sprinkle on the whole seed bed and press Row spacing requires the ditch to be dripped, enough water is poured, and seedlings, soil cover and cover film are immediately planted.

3. During the colonization, apply according to acupuncture points: greenhouse hot pepper colonization is usually in the middle and late January. Before planting, prepare 0.5 kg of manganese phosphorus zinc per 1000 points, 0.5 kg of carbendazim, DT 0.5 kg, add 10 kg of dry Mix fine soil. When planting, the medicine soil is evenly scattered into the planting hole. Generally, a medicine soil can be sprinkled with 4 points, and the seedlings can be watered after spreading.

4. Heavy herbicide application in the entire shed: For heavily weighed plots, the incidence is heavier, and it is best to change crops if possible. If it is not, it is necessary to deepen the sun on the one hand, increase the application of organic fertilizer, and increase the resistance of the plants. On the other hand, it is necessary to apply pesticides throughout the shed and prevent them in advance. Medication varieties ibid., calculated according to cultivation area, 10 grams per square meter. 10 times dry fine soil, evenly spread on the ground, the whole shed application of the same applies to severely affected areas.

5. Irrigating root control at the early stage of disease: From March to April of each year, the upper peak of the disease is the peak period of capsicum root disease. At this time, use the above three agents to administrate the roots at a rate of 500 times respectively. The seedlings of the diseased plants and the surrounding seedlings should be irrigated at the roots with 0.5 kg each, and the rest should be filled with 0.2-0.3 kg per kg. Pharmacy. Once every 10 days, it is possible to control the spread of the disease, even if the irrigation is not performed for two times after irrigation. (Hubei Dangyang Agricultural 110 Service Center)


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