1. Symptoms: the disease mostly occurs in the growing period, mainly affecting the root and stem of the plant. After the disease, the epidermis of the rhizome of the plant will appear brown water spots, with white hyphae, and finally twined into a white silk like hypha layer. When the disease is serious, the stem base of the plant will rot and necrosis, and the branches and leaves will wither, eventually leading to the death of the plant.
2. Prevention and control method: it is necessary to destroy the diseased plant immediately. In the early stage of the disease, 50% carbendazim 600-800 times solution or 25% Kuixing 300-400 times solution can be used to irrigate the base of the diseased plant for treatment.
1. Symptoms: this disease is caused by poor drainage and too high humidity in rainy season. It mainly damages petioles, leaves and pedicels. After the disease, the plants grow gray brown or gray white spots, most of which are round or nearly round.
2. Prevention and treatment: the disease can be treated by spraying 70% tolbutine 600-800 times solution or 80% Fumei anthrax 600 times solution. Spray once a week, 3-4 times in a row.
