What Causes Pepper Plant Death? Detailed Prevention and Control Methods
When growing colored peppers, preventing pepper plant death has become a key part of greenhouse management, especially since in recent years the phenomenon of pepper plant death has become increasingly serious, which is extremely detrimental to the development of the colored pepper industry. So what causes pepper plant death? Let's take a look together.
I. Causes of Plant Death
1. Increase in soil pathogens
The main causes of colored pepper plant death are Phytophthora root rot, root rot, Fusarium wilt, stem base rot, etc. Continuous cropping causes the pathogens in the soil to increase continuously, so after planting, the seedlings are infected by pathogens and develop diseases.
2. Incomplete decomposition of farmyard manure
When chicken manure is suitable for use as farmyard manure, applying it without complete decomposition will cause root tip burn and lead to pathogen infection of the root system. At this point, when the wilted colored pepper seedlings are pulled out, there will be very few roots, no new roots, and the fibrous roots will be brown.
3. Flood irrigation
Many farmers believe that yield depends on fertilizer rather than water, so they have always used the traditional cultivation method of flood irrigation. The root system of colored peppers is not well developed and likes moisture but fears waterlogging. When roots grow in standing water for more than 24 hours, they will die from lack of oxygen, so root rotting in colored peppers often occurs after flood irrigation. In addition, if the difference between the water temperature and the soil temperature is too large, avoid root damage caused by drastic soil temperature changes during watering. Also, when watering, pay attention to the spread of pathogens with water. Sometimes diseased plants can also easily cause large-scale disease outbreaks in the greenhouse.
II. Prevention and Control Methods
1. Deep plowing of the soil
First, before planting, plow the soil deeply to 25-30 cm, then according to the soil's fertilizer requirements, rationally apply decomposed organic fertilizer to increase the soil's organic matter content, improve permeability, and provide a suitable environment for root growth. In addition, promptly disinfect the greenhouse soil, which can reduce the base number of pathogens in the soil and reduce the probability of disease occurrence.
2. Applying microbial fertilizer in the planting holes
Particular attention should be paid to soil treatment in the planting holes. Microbial fertilizer can be applied in the planting holes, which can supplement the number of beneficial bacteria in the soil, and the active substances produced during their growth have an obvious inhibitory effect on pathogenic bacteria. These active substances can also produce metabolites that stimulate rooting. This can both promote rooting and strengthen the plant's disease resistance.
3. Drug prevention
After planting, you can use root or flush application of Jikangjun 968 seedling-stage flush fertilizer. This is the key period for prevention and control. At this time, the stems are thin and weak, and pathogens can easily infect them. At this time, according to the different conditions in the greenhouse, chemicals can be used to spray the stems first and then drench the roots of the plants.
4. Drug treatment
When diseased plants are found, drugs can be used to drench the roots of all plants in the greenhouse for early prevention. For severe cases, promptly pull them out and take them out of the field, treat the diseased holes, and then replant seedlings.
The above is an introduction to the causes of colored pepper plant death and prevention and control methods. We hope it can help you. To learn more related knowledge, please follow us.