1、 Symptom performance

Black spots on okra leaves are a common disease, which usually occurs from the rhizome and spreads to the leaves from bottom to top. The diseased leaves have water stains. If the environmental humidity is relatively high, the diseased spots will spread quickly. The diseased part will soften and grow a white mold layer. The roots and stems will fall down after being infected, and the stems and leaves will wither and die in serious cases

2、 Cause of disease

The cause of okra disease is usually bacteria or fungi. After overwintering in the soil, its spores begin to reproduce under the appropriate environment, and sputter onto the plant through irrigation, resulting in disease. It is common in rainy season. In addition, it is also related to planting density and soil drainage capacity. Too high planting density and poor soil drainage will increase the probability of disease

3、 Treatment method

After the diseased plants are found, they need to be concentrated and burned to avoid the spread of the disease. In addition, the plant should be sprayed with fungicides such as carbendazim to eliminate the remaining bacteria to avoid disease recurrence. Ensure environmental ventilation, reduce air humidity, and inhibit the growth and reproduction of bacteria

4、 How to prevent

In view of this disease, we should first prevent and treat it from the source. The soil must be free of germs. It is usually necessary to rotate crops. Drugs can be sprayed before planting. Secondly, pay attention to the planting density to prevent them from blocking each other and affecting the internal ventilation and lighting. In addition, pay attention to the environment and don't let the climate be too humid, which is also a key factor causing diseases