How to control peanut bacterial wilt caused by bacterial wilt

Peanut bacterial wilt, also known as "green disease", "dead seedling", "peanut plague" and so on, is a typical vascular disease, is a bacterial venereal disease. Ralstonia solanacearum can occur from seedling stage to harvest stage, especially at full flowering stage. In the early stage of infection, the top leaves of peanut main stem lost water and withered, opened late in the morning and closed early in the evening. Then the disease developed, the leaves of the whole peanut withered sharply from top to bottom, and the whole peanut plant withered and died.

Peanut bacterial wilt

Route of transmission: Ralstonia solanacearum of peanut overwintered in soil, diseased residue and undermature compost, and became the main source of primary infection in the second year. In the field, it is mainly spread by soil, running water and agricultural tools. High temperature and humidity is the main factor for the high incidence of peanut bacterial wilt.

Prevention and control methods:

The main results are as follows: 1. The most economical and effective way to control bacterial wilt is to select resistant peanut varieties, and crop rotation is also effective to control the occurrence of bacterial wilt.

2. Chemical control: (1) Prevention program: 30ml Qingku Rick mixed with 15kg water, irrigated root, irrigated once every 10 days and continuously irrigated 2-3 times.

(2) in the middle and early stage of the disease, 50 ml of Qingku Rick was irrigated with 15 kg of water, once every 7 days, and 2 Mel for 3 times. If the pathogen harms the aboveground part of peanut at the same time, the aboveground part is sprayed at the same time as the root of peanut is injected, once every 7 days. When spraying, 50 ml of Qingkulike + 40 ml of Jinbei or Vofengsu can be added for every 15 kg of water.

(3) in the middle and later stage of the disease: when the condition of peanut bacterial wilt is serious, the effect is quick. When filling the root or spraying, you can add chemicals such as 50ml of Rhizoctonia solanacearum + 15g of carbendazim or metalaxyl? 25 grams of manganese and zinc or 20 grams of folic acid 20 grams.