Control methods of Cucumber bacterial Corner spot in the latest Summer

Cucumber is a kind of vegetable that people like to eat in summer, and this kind of vegetable can be eaten almost all the year round. At the same time, cucumber is also the most vegetables that farmers grow in the fields. Cucumber vines can generally be seen in rural areas. But cucumber is also a kind of vegetable with many diseases and insect pests, especially in summer, which makes many farmers look confused. Then Shuai Shuai will tell you how to prevent and cure the bacterial corner spot of cucumber.

I. conditions for onset of the disease

1. The pathogen of this disease likes to attach to the seeds of cucumber. The pathogen does not move, but overwinters in the residue of the diseased plant, and then wakes up the next year to invade the cucumber, and its life span is very long. It can generally live as long as two years, and its main mode of transmission is Rain Water transmission and irrigation water transmission. After the water is absorbed by the plant, it enters the inside of the plant directly from the stomata or the wound of the plant and then gets sick, it can be transmitted again and again, and it can be infected again and again after a rain.

2. When cucumbers are planted in the greenhouse, the air humidity is generally high, which is easy to cause bacteria to fester, and the pus is easy to infect other parts and plants, and at the same time, the resistance of cucumbers will decline. if people do not pay attention to this disease, it is easy to spread and infect repeatedly.

3. The best temperature for the disease is between 24 and 28 degrees, up to 39 degrees and as low as 4 degrees. This bacteria is not resistant to high temperature. If the temperature is as high as 50 degrees, it will die within 10 minutes. The best humidity is about 80%. If there is much water on the leaves, the incidence is high, so it seems that this disease is a disease of high temperature and high humidity.

II. Prevention and control methods

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

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

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

4. Before sowing, the seeds need to be sterilized in a 70-degree incubator for three days, and then soaked in 50-degree warm water before they can be fished out to dry and sow.

5. The seriously diseased fields should be rotated for more than 2 years, and the diseased leaves and plants should be cleaned in time during the growing period to avoid secondary infection, and the cleaned fields should be buried or burned directly.

The above is the prevention and control methods of cucumber bacterial corner spot in summer, have you learned it? At ordinary times, we should make more observation, try to take corresponding measures in the early stage of the disease, and strengthen prevention and management in peacetime, so as to avoid getting sick.