Brown spotBrown spot disease can cause great harm to leaves. Usually, round brown spots will appear on the leaves. The pathogen can be spread through rainwater, and the residual pathogens attach to the leaves and cause the disease. To prevent the occurrence of this disease, you can increase the spacing between plants. Good ventilation can effectively prevent the occurrence of this disease. During the disease period, water and fertilize less, and spray certain medicines appropriately for prevention and control. Botrytis cinereaGray mold usually occurs in the middle growth stage and can cause damage to the stems and leaves of the plant. The pathogen of this cake will remain in the soil, and every spring it will fall into the air and attack the plants. When encountering this disease, you can treat it by applying more fertilizers and watering frequently, which can improve the plant's disease resistance. With a certain amount of medicine, the damage caused by the disease can be reduced in a short time. Seedling rotIt can cause lesions in the roots and stems of plant seedlings. It starts as spots of different shapes, then turns black, rots, and the plant dies. Diseased parts of the plant will produce white threads that may even penetrate the leaves. This disease is spread through water. The survival rate of the pathogen is higher in the low-lying areas of farmland, which is an important problem that causes plant disease. Usually the diseased plants can be removed and watered appropriately to avoid water accumulation. Spraying with drugs at the same time can effectively control this disease. |
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