Causes of death of colored pepper and its control methods

The prevention of dead plants in colored pepper has become the focus of greenhouse management, especially in recent years, the phenomenon of colored pepper is becoming more and more serious, which is extremely disadvantageous to the development of colored pepper industry. So what is the cause of the death of colored peppers? Come and have a look with the editor.

First, the cause of the death of the tree

1. The increase of soil pathogens.

The main reasons for the death of colored pepper are Phytophthora root rot, root rot, Fusarium wilt, stem rot and so on. Continuous cropping makes the pathogens in the soil increasing, so the seedlings are infected by pathogens after planting.

2. Farm manure is not mature completely.

When it is suitable for chicken manure to be used as farm manure, it will be applied without complete maturity, which will cause shoot roots and bacteria to infect the roots. When the wilted seedlings of colored peppers are pulled out, there will be few roots, no new roots, and brown capillary roots.

3. Flood irrigation

Because the yield of many farmers lies in fertilizer rather than water, it has always been the way of flood irrigation in traditional cultivation methods. The root system of colored pepper is underdeveloped, like wet and afraid of waterlogging, when the root system grows in stagnant water for more than 24 hours, the root system will die of hypoxia, so the root retting of colored pepper occurs from time to time after flood irrigation. In addition, if the difference between the water temperature and the ground temperature is too large, to avoid drastic changes in ground temperature caused by watering and root damage, in addition, watering should also pay attention to the spread of bacteria with the water, sometimes sick plants, it is also easy to cause a large area of disease in the greenhouse.

II. Prevention and control methods

1. Dig deep into the soil

First of all, before planting, the soil should be turned 25-30 cm deep, and then according to the amount of fertilizer required by the soil, the mature organic fertilizer should be applied reasonably to increase the content of organic matter in the soil, improve the permeability and improve the suitable environment for root growth. In addition, the soil in the greenhouse should be disinfected in time, which can reduce the number of pathogens in the soil and reduce the probability of disease.

2. Bacterial fertilizer is applied at acupoints.

Special attention should be paid to the soil treatment in the planting hole. Bacterial fertilizer can be applied in the planting hole, which can supplement the number of beneficial bacteria in the soil, and the active substances produced in the process of body growth can obviously inhibit the pathogenic bacteria. These active substances can also produce metabolites that stimulate rooting. This can not only promote the root, but also enhance the plant disease resistance.

3. Drug prevention

After planting, we can apply fertilizer at the seedling stage with root or anti-bacterial 968, which is the key period of control, when the stem is thin and weak, and the pathogen is very easy to infect. At this time, the plant can be sprayed first and then irrigated with chemicals according to the different conditions in the greenhouse.

4. Drug treatment

When diseased plants are found, drugs can be used to irrigate the roots of the plants in the whole shed to prevent them in advance. If the disease is serious, they can be pulled out and taken out of the field in time, and the seedlings can be replenished after the treatment of the disease points.

The above is the introduction of the causes and control methods of colored pepper, hope to help you, want to know more related knowledge, please pay attention to us.