Vitis vinifera root disease generally occurs in the neck and root neck up 50 cm, the victim grape vines gradually weakened, yellow leaves, can cause serious death. Measures against grapevine root cancer: First, improve the soil. After measuring the pH value of the soil, change the pH of the soil according to local conditions to create an environment that is not conducive to the survival of the bacteria. The second is seedling disinfection. When introducing grape seedlings, strict quarantine should be conducted to prevent the introduction of diseased seedlings. Seedlings should be disinfected before colonization. The third is to minimize the wound. In the onset of the disease, people and livestock are prevented from mechanically damaging the grape plants, and the underground pests are eliminated, and the insect damage is reduced to prevent the invasion of the bacteria from the wound. The fourth is to spray 3-5 Baume of lime sulfur before the spring vine sprouts. To spray all the grape plants, stone pillars, iron wire, and ground, the diseased plots will spray more drugs on the old grapes. Fifth, for infected plants, the tumor blocks are first trimmed away, and then the wounds are smeared with lime sulfur residue or lime milk. Sixth, strengthen field management. Control the amount of nitrogen fertilizer application, re-apply phosphorus and potassium fertilizers, supplement trace elements, and reasonably load, and gradually increase tree vigor and improve plant resilience.
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