1. White silk disease: generally, the disease occurs at the base of the stem. The infected part will turn brown and rot. the outer cortex begins to fall off and white hyphae will be produced on the surface. In the later stage, sclerotia will grow.
2. Anthrax: it is mainly harmful to the leaves. At the beginning of the disease, there will be light green spots on the leaves, and then gradually expand into gray brown near round spots. Generally, the infection is the most serious in summer and autumn.
3. Leaf spot disease: it usually occurs in the leaf part. At the beginning, brown spots appear, and then the disease part becomes thinner.
4. Soot disease: at the beginning of the disease, there will be dark brown mould spots on the leaves, which will gradually expand into black soot like mould layer.
The main pests are red spider and leaf roller moth, which are mainly harmful to the tip and tender leaves. They will suck the juice inside and bite the diseased parts, causing damage to the growth.
1. Disease: it is necessary to remove the disease plants in time, then destroy them in a centralized way, and strengthen daily management. At the beginning of the disease, it is necessary to disinfect the soil, or spray Bordeaux solution, pomegranate sulfur mixture, etc.
2. Insect damage: in winter, the dead branches and leaves should be removed in time, which can reduce the source of infection, and it needs to be treated by spraying medicine in time.
