Grape root rot mainly damages the rhizomes, main roots and lateral roots of plants. After infecting the surface layer of the grape, the pathogen secretes pectinase, decomposes the intercellular pectin of the superficial tissue, and causes the surface tissue to disintegrate and rot. The most important feature of the disease is a layer of white to light yellow, fan-like expanded hyphae in the surface layer of the damaged root and between the surface layer and the xylem. The mycelial layer shows blue-green fluorescence in the dark place. . In the hot and rainy season, on the soil around the neck of the disease, a cluster of honey-yellow mushrooms grows, which is the fruiting body of the pathogen. The occurrence rule of grape root rot: The growth temperature of the pathogen is 15°C~30°C, and the optimum temperature is 25°C~30°C. The heat resistance was 55°C for 60 minutes and 65°C for 5 minutes. Pathogens only exist in the wood material in the soil. When susceptible roots are exposed to materials that are invaded by pathogenic bacteria, they are penetrated by pathogenic bacteria and are infected by Abbe. The mechanical damage of the roots and the occurrence of lots of water occur. The prevention and treatment of grape root rot: New vineyards should pay attention to soil history. To test whether the roots of the previous crop have germs. If any pathogens are found, soil disinfection is required. The agent can be used methyl bromide and carbon disulfide, applied depth of about 60 cm. The use of zymogens can reduce the hazard. Fruit juice drinks is a beverage made of fruit juice products obtained by physical methods such as pressing, centrifugation and extraction. Fruit juice retains most of the nutrients in the fruit, such as vitamins, minerals, sugar and pectin in dietary fiber. Often drinking fruit juice can help digestion, moisten the intestines and supplement the lack of nutrients in the diet. Juice Drinks,Honey Tea,Honey Citron Tea,Goji Berry Juice Xi'an Gawen Biotechnology Co., Ltd , https://www.seoagolyn.com
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Grape root rot symptoms and prevention