Control methods of Cucumber bacterial Corner spot in Summer

Cucumber is a vegetable that people like to eat in summer, and this vegetable can be eaten almost all year round. At the same time, cucumber is also the most vegetables planted by farmers in the field. Generally, cucumber vines can be seen in rural areas. However, cucumber is also a vegetable with more diseases and insect pests, especially in summer. The disease is more serious, which makes many farmers confused. Then the following handsome will tell you how to prevent and treat cucumber bacterial angular spot disease!

I. Conditions of disease

1. The pathogen of this disease likes to attach to the seeds of cucumbers. This pathogen will not move, but overwinter in the residues of diseased plants, and then wake up to invade cucumbers in the next year. Moreover, its life span is very long, generally it can live for two years. Its main transmission mode is rain transmission and irrigation water transmission. After being absorbed by plants or directly entering the plants from stomata or wounds, it can carry out secondary transmission. After a rain it can infect again and again.

2, planting cucumber in the greenhouse, the air humidity inside is generally relatively large, it is easy to cause purulent bacteria, pus is easy to infect other parts and plants, at the same time cucumber resistance will decline, if we do not pay attention to this disease, it is easy to repeatedly spread and infection.

3, the best temperature of the disease is between 24-28 degrees, the highest can reach 39 degrees, low to 4 degrees, this pathogen is not resistant to high temperature, if the temperature is as high as 50 degrees, it will die within ten minutes, the best humidity is about 80%, the incidence of water on the leaves is high, so it seems that this disease belongs to a high temperature and high humidity disease.

II. Control methods

1. Because the temperature in summer can often be maintained at more than 30 degrees, it is the high incidence period of cucumber bacterial angular spot disease. This disease mainly harms leaves and rhizomes. The symptoms of this disease are very similar to those of cucumber downy mildew. Therefore, it will bring certain difficulties when selecting control measures. When judging, we must carefully observe whether it is downy mildew or angular spot disease. Otherwise, spraying the wrong medicine with the wrong method will definitely cause death and economic losses. You should take measures as soon as possible.

2. Try to choose seedlings with strong disease resistance when selecting seedlings, which can be done when selecting seeds.

3. When collecting seeds, we should choose healthy and disease-free varieties, so that the cultivated seeds will be excellent.

4. Before sowing, seeds need to be sterilized in a 70-degree incubator for three days, then soaked in warm water of 50 degrees, and finally they can be taken out and dried for sowing.

5. The seriously ill field should be rotated for more than 2 years. The diseased leaves and diseased plants should be cleaned up in time during its growth period to avoid secondary infection. The cleaned ones should be buried deeply or burned.

The above is the summer cucumber bacterial angular spot disease control method, we have not learned it? At ordinary times, we should observe more, try to take corresponding measures in time at the early stage of the disease, and strengthen prevention and control management at ordinary times, so as to avoid infection.