Prevention of autumn vegetables dead tree "four steps"

Dead tree is the most prominent problem in the current production of autumn wolfberry vegetables, mainly reflected in sweet peppers and tomatoes. Stem basal diseases are the main diseases causing the death of the current vegetables. Phytophthora root rot, stem rot and sclerotium are the main diseases. Prevention and treatment of this disease, the prevention and treatment of symptomatic drugs is the most direct and effective measure.

First, symptoms and control agents

Phytophthora root rot: It mainly affects stem bases and roots. In the early stages of disease, the diseased body is initially hot-water-like, and then it turns dark brown and shrinks and rots. It can develop into the roots, leading to major root necrosis and plant death. It can be sprayed and sprayed to prevent and cure 600 times or 800 times Anke.

Stem rot: The main stem base is damaged. In the early stage of the disease, brown spots on the stem side appear hollow, causing the stems to rot. It can be used to control 1,000 times of tolclofos-methyl or spray 800 times of ethyl allicin.

Sclerotinia: It mainly affects the stem base. Its early onset symptoms are similar to those of Phytophthora root rot, but it does not develop to the xylem. In the later period, when the humidity is high, the white hair is dense and distinct from Phytophthora root rot. It can be used for irrigate and control of roots such as 1000 times of prohexine or 600 times of ethylene nucleus.

In addition, Fusarium wilt, Fusarium rot, Fusarium oxysporum, and bacterial wilt are also important diseases that cause dead vegetables in autumn vegetables. These diseases directly cause roots to cause dead vegetables, and they must also be strictly controlled during production.

Second, the prevention and treatment of dead trees in autumn

In view of the fact that autumn wolfberry vegetables are mostly seedlings cultivated by nursery factories, the author suggests that in the management of autumn wolfberry vegetables, the following four steps should be done:

The first step: remove the plug, and spray the leaf to prevent disease infection. The solution can be made of bio-inoculum or bactericide to prevent root diseases; the foliar spray is used to prevent stem base diseases and leaf diseases.

The second step: point application of agents or biological agents to prevent root disease. The cadmium alizarin, phosphorus aluminum, and copper citrate can prevent and cure Phytophthora root rot, bacterial wilt and other diseases.

The third step: Irrigation. Antibiotic 968 can be used to irrigate roots. Under normal circumstances, irrigate once every 7-10 days, 2-3 times

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