Causes and prevention methods of summer pepper death

Pepper is one of the main varieties of vegetable farmers. However, with the increase of the number of years of pepper planting, the phenomenon of pepper death is more and more common, which has a very significant impact on the yield and quality of pepper. Especially in the summer, when the peppers are planted in the open air, it is easy to appear dead seedlings. What are the reasons for the summer pepper deaths? How to prevent it?

First, the reason for the death of pepper

1. Bad environmental conditions

1Climatic factors: continuous high temperature and drought, high light intensity or heavy rain suddenly turns fine.

2 Soil factors: low ground potential, high groundwater level, poor drainage, poor soil permeability, poor tillage, soil compaction; soil, thin soil, sticky plant, slow growth, malnutrition, weak growth, poor disease resistance

2. The variety is not properly selected. Plant large fruit, large leaf varieties or heat-resistant varieties.

3. Continuous cropping is serious. Peppers are planted every year in the same field or as a latent source of bacteria for melons and solanaceous crops.

4. The disease occurs. Infected by pathogens, the summer dead plants of peppers are mainly caused by the mixed occurrence of several diseases such as blight, disease, and viral diseases.

Second, the prevention and treatment of pepper dead seedlings

1, choose the variety

Choose a medium-late maturing variety that is heat-resistant, disease-resistant, and has a long growing period. In general, small fruit varieties are more resistant to heat-resistant and disease-resistant leaves than large-leaf varieties. Therefore, it is best to choose red pepper, pepper, or small pepper varieties in summer.

2, seed treatment

Soak the seeds in warm water at 55 °C for 15-20 minutes and then soak them in normal temperature water for 6-8 hours. After the seeds are full of water, drain the water and wrap it in a damp cloth for germination. After 80% of the seeds are white, the seeds can be effectively killed. Kill some germs.

3. Reasonable rotation

Avoid continuous cropping with melon and solanaceous Vegetables for 2-3 years with crops such as rice, cruciferae and legumes. If the previous work is not the best in the paddy field, it will be used for a month or so to kill the pathogens and 25-30 kg of lime per acre when it is used. This will have a certain effect on reducing disease and preventing dead seedlings.

4. Strengthen field management

Implementing sorghum planting, reasonable planting, rational use of water, timely draining, cultivating and loosening the soil to prevent excessive humidity. On the basis of applying the base fertilizer, the application of phosphorus and potassium fertilizer should be applied to increase the disease resistance of the plant.

5, 畦 cover grass

After the flowering of the pepper, evenly spread the straw of 2-5 cm on the surface to cool down and moisturize, prevent the rainwater from scouring, improve the physical and chemical properties of the soil, improve the aeration of the soil, promote the activity of the microorganisms, increase the soil nutrients, and promote the root growth of the pepper plants to make the plants robust and reduce death.

6, reasonable watering

Vigorously promote drip irrigation, sprinkler irrigation and seepage irrigation to reduce soil and air humidity, so that the soil is in a dry state to enhance the resistance of pepper roots; if the weather is hot, if the water is flooded with pepper, the soil moisture saturation is poor, the pepper roots are suffocated, the death is increased, and the plant aging pathogens pass. Spreading water spreads the plant's susceptibility.

7. Chemical control

In the high temperature and high humidity season, timely use of drugs for prevention and treatment with 50% metalaxyl manganese zinc wettable powder 700 times liquid or 50% nail cream copper wettable powder 700 times liquid and other anti-epidemic diseases; with 25% methyl thiophanate wettable powder 1000 Anti-blight disease such as double liquid; spray 200-300 times liquid 5% bacteria poison or clear oligosaccharide to prevent viral diseases, spray the above pesticides about 7 days, spray 3-4 times, and pay attention to rotation Pharmacy.

The above is the reason for the death of summer peppers and the prevention and treatment methods. The death of peppers causes the reduction of pepper production, but the result is that the peppers are not harvested, which will bring huge economic losses to the farmers. Therefore, farmers who grow pepper must pay attention to it, prevent it in time, avoid the death of pepper, and cause unnecessary losses.

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