Potato wilt Responsibility editor: managernk Source: "Dioscorea pest diagnosis and treatment of vegetables and diseases" Views: 171 Time: 2007/11/05 Potato bacterial wilt, also known as potato brown rot. [Pathogen name] Pseudomonassolanacearum (Smith) Smith. [Host crops] Potatoes, tomatoes, eggplants, tobacco, peanuts, bananas, peppers and many ornamental crops. [Disease diagnosis] can be onset throughout the reproductive period. The diseased plant was slightly dwarfed, and the leaves were greenish or green. The lower leaves were often wilted and the entire plant was drooping. The beginning of wilting can be restored sooner or later, and after 4 to 5 days of repeated periods, the stems and leaves remain green and all acute death withering. The diseased leaves did not fall off, the veins of the leaves became brown, the diseased stems also saw brown stripes, and the vascular bundles became brown when cross-sections were observed. When the humidity was high, there was overflow of the bacteria liquid on the cut surface. The tuber was infected, and the symptoms of the light were not obvious. The umbilical part of the weight was gray-brown and water-soaked. The tuber was cut and the vascular bundle ring was brown. The extrusion could overflow the white mucus, but the skin was not separated from the vascular bundle. In severe cases, the skin cracks and the pith explodes into a muddy condition, which is different from blight. The pathogenic bacteria is Pseudomonas sclerotiorum bacteria. The pathogenic bacteria are short rod-shaped, single-celled, blunt at both ends, solitary or clustered, with 1-3 flagellums, and negative Gram-negative. On the broth culture medium, round or irregular shape colonies, more pollution white, slightly elevated, smooth and shiny. Disease rule: The pathogenic bacteria overwinter in the soil with the diseased tissue or invade the potato. The bacteria can be rotted in soil for 14 months to 6 years. Sowing the diseased potato can directly cause the disease. Infested with water or rain in the field, it invades the base of the stem or the root, and can enter the adjacent parenchyma cells through the catheter. After invading the vascular bundles, the bacteria rapidly propagated, expanded the system, blocked the catheters, and blocked water transport leading to wilting of plants. The bacteria is in high temperature and high humidity conditions. Can be developed between 10 ~ 40 °C, 30 ~ 37 °C for the most suitable. Low soil moisture, high water content, poor drainage, continuous rain, or when the temperature rises after sunny weather, the incidence is serious. Acidic soil is heavier. Many land pests, such as nematodes, have serious diseases on the plot. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Seafood Mix,Cooked Mussel Meat,Mussel Half Shell,Cut Swimming Crab GOLD STAR FISHERY ZHOUSHAN CO.,LTD. , https://www.goldstar-aquatic.com