1. Symptoms: at the early stage of the disease, the leaves of dripping Guanyin will become yellow without dripping. In the later stage, the stem will be dried and shriveled, and white whiskers will appear on the surface and root of the soil.
2. Prevention and treatment: after the onset of the disease, 50% carbendazim 1000 times solution or 50% tobramycin 500-800 times solution can be used to spray the disease. Focus on the middle and lower parts of the plants and the ground. Spray once every 10 days, 2-3 times in a row can cure.
1. Symptoms: mainly harmful to the leaves and flowers of plants. When the disease occurs, there will be small water spots on the leaves. In the later stage, the disease spots gradually expanded and fused, forming large brown spots. When the air humidity is high, there will be gray black mold layer on the lesion.
2. Prevention and control methods: dead leaves and diseased leaves shall be removed in time and buried intensively. At the early stage of the disease, the plants can be sprayed with nongliling or puhaiyin.
1. Symptoms: mainly harmful to petiole and back of leaves. The adults of the scale insects will absorb the sap of the leaves, which will lead to the appearance of leaf spots and early abscission.
2. Prevention and control method: when the insect damage area is small, brush it with a brush, clean the diseased leaves and burn them. When a large area occurs, the plants should be sprayed with 40% Omethoate emulsifiable concentrate 1000 times solution and other medicaments.
