Peanut stalk rot, commonly known as rotten neck disease, is distributed in various flower production areas throughout the country, generally occurring in the middle and late stages. It quickly dies and dies after the illness, and is later susceptible. The pods are often rotten or dissatisfied with the seeds, causing serious losses. The general incidence rate is 20% to 30%, and the severe cases are 60% to 70%, and even the particles are not collected. First, the symptoms The pathogen invades the plant from the cotyledon or the young root, and produces a yellow-brown water-stained lesion on the root and neck, which then turns dark brown, causing the root tissue to rot. When in a humid environment, the diseased part produces a conidia (ie, a small black protrusion), the epidermis of the diseased part is easily peeled off, and the fibrous tissue is exposed. When the environment is dry, the epidermis of the diseased area is sunken and close to the stem. After the adult stage is susceptible, the whole plant is dead for about 10 to 30 days. The diseased part is mostly attached to the ground at the base of the stem, and sometimes the main stem and lateral branches are dead. . Second, the law of incidence The pathogens mainly overwinter on the diseased plants in the seeds and soil, and become the source of the disease next year. If the diseased plant is used as a drink or a pod to raise livestock and feces, and the soil and fertilizer mixed with the diseased plant can spread and spread. In the field, it mainly relies on rainwater runoff in the field, followed by strong winds, but the bacteria can also be transmitted during the operation of farming. In rainy and humid years, especially in the harvest season, the harvested seeds have a higher rate of bacteria. Therefore, it is not only the main communicator of the disease, but also can be spread over long distances through introduction. Third, prevention and treatment methods 1. Prevent seeds from becoming moldy and ensure seed quality. (1) Harvest at the right time to avoid the seeds being wet and prevent mold; (2) drying the seeds to ensure that the water content does not exceed 10%; (3) Safe storage, pay attention to ventilation and moisture; (4) Do not use mildew seeds or spoiled seeds for sowing; (5) The early onset of peanuts in wheat-set peanuts is light; (6) Select resistant varieties. 2. Reasonable rotation It is best to rotate with grass, sorghum, corn and other grass crops; 3. Application of decomposed fertilizer Strengthen field management 4. Chemical control Use 25% or 50% carbendazim wettable powder, seed dressing according to the weight of the seed 0.3% to 0.5% or 0.5% to 1% of the seed amount to prepare the liquid soaked with the liquid, so as to submerge the seed, soak The seeds were taken out in 24 hours. For the wonderful pictures and popular comments on peanut stem rot prevention technology, you may be interested in the following recommended contents, welcome to read. Instant tea powder series products include: instant Black Tea Powder , instant Green Tea Powder, instant Puer Tea Powder , instant Oolong Tea Powder,instant White Tea Powder, instant flower tea powder, Matcha Powder etc. This series of products are made of tea without raw materials, smooth and has a certain fluidity, no foreign impurities visible to the naked eye, with tea special aroma of solid powder. instant black tea powder, instant green tea powder, instant puer tea powder Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zyplantextract.com
