The causes and preventive measures of the latest seedling death of hot pepper

Dead pepper seedling is a new type promoted during pepper seedling cultivation, which seriously affects the planting benefit of pepper and brings huge economic losses to farmers. So what is the reason for the death of pepper seedlings? How to prevent it? Let's get to know it.

Cause of seedling death of hot pepper

1. Bacterial infection

Pathogen infection is the main cause of pepper seedling death, and the disease is mainly caused by pathogen infection. In the seedling stage and early planting stage, there are mainly quenching disease, blight disease and blight, which may cause pepper seedling death.

2. Continuous cropping and continuous cropping

Continuous cropping and continuous cropping will lead to the improper accumulation of bacteria in the soil, the base number will increase, and the bacteria will invade from the wound at the root or stem base and spread under suitable conditions, resulting in a large area of dead seedlings.

3. Seed or seedling carrying bacteria

The infection of seeds or seedlings is the main way of long-distance transmission of the disease, and it is also the primary infection source of the disease in new vegetable fields. The disinfection of seeds and seedlings during sowing provides favorable conditions for the spread of the disease.

4. The way of raising seedlings is not right.

It has been proved by practice that the incidence of seedling in nutrient substrate is lighter than that in nutrient soil, the disease is more serious in the land with unfermented mature organic fertilizer, and the disease in flat bed planting is more serious than that in ridging planting.

5. Irrational irrigation

Unreasonable irrigation methods also create favorable conditions for the development of diseases, in which the disease is obviously more serious in the fields with flood irrigation or irrigation times, and almost no or less in the fields with drip irrigation under plastic film.

6. Improper fertilization

Excessive application of nitrogen fertilizer, insufficient application of phosphorus, potassium and trace elements, and application of immature farm manure or organic fertilizer will rot the root system, cause serious disease and lead to dead seedlings.

Precautionary measures

1. Rational rotation

Rotation is carried out according to the specific situation to reduce the number of pathogens in the soil.

2. Disinfection of seeds or seedlings

Select the qualified seeds and disinfect the seeds before sowing or planting to kill the germs attached to the seeds and ensure the healthy growth of the seedlings.

3. Soil disinfection

Conditions can be used to disinfect the soil, the commonly used agents are copper sulfate, thiram, etc., and you can also choose transplanting Ling, chlorpromazine and other agents to disinfect the planting hole.

4. Strengthen the management

Increase the application of organic fertilizer, phosphorus and potassium fertilizer and trace element fertilizer to enhance plant disease resistance; appropriate amount of watering to prevent flood irrigation; timely ploughing and loosening soil to increase soil permeability.

5. Chemical control

Purek water agent can be used to irrigate roots at seedling stage, which can effectively prevent Pulike water agent; after planting slow seedlings, carbendazim can be used to irrigate roots, which has a better control effect on blight and quenching disease; spraying amicida suspending agent and enoxime EC before the outbreak of the disease has a better prevention and control effect. In the high temperature and rainy season in summer, copper sulfate was sprinkled before watering, and then watered to prevent pepper blight and stem rot. Shile could be used to irrigate roots before and at the initial stage of root rot, and the diseased plants could be pulled out in time in the middle of growth.

The above is the introduction of the causes of pepper seedling death and preventive measures, hope to help you, want to know more related knowledge, please pay attention to us.