What is the method used for soil borne diseases of chili peppers?

Soil-borne diseases of peppers are diseases caused by pathogens living in the soil and attacking crops from the roots or stems of crops when conditions are suitable. Common soil-borne diseases include: cataplexy, blight, blight, root rot, blight, verticillium wilt, sclerotinia sclerotinia sclerotinia disease, bacterial wilt, root-knot nematode disease, etc.

The ultimate goal of the prevention and control of soil-borne diseases of pepper is to make the soil free of soil-borne pathogens, or to control the number of pathogenic bacteria within the range of not causing disease or mild disease. This control effect can be achieved by replacing the diseased soil or reducing the number of pathogenic bacteria in the soil. Replacing diseased soil with disease-free new soil is the best way to prevent and control soil-borne diseases, but the workload of replacing soil is too large, and it is not realistic to change soil every year, so it is only suitable for small area seedbeds.

There are many ways to reduce the number of pathogens in the soil, such as crop rotation, soil disinfection, and improving the soil microbial environment.

Continuous cropping is the main factor in the formation of soil-borne diseases in greenhouses. On the one hand, after continuous cropping, the soil fertility consumption is too large, which affects the healthy growth of crops and reduces the disease resistance of crops. On the other hand, because the same crop is planted for many years, the pathogenic bacteria of this crop can multiply in the soil for many years, gradually accumulate, and eventually form diseased soil. Therefore, crop rotation is the most economical and effective measure to prevent and control soil-borne diseases.

Reasonable crop rotation, especially water-drought crop rotation, can achieve twice the result with half the effort in preventing the occurrence of soil-borne diseases. It is forbidden to rotate vegetables of the same family during crop rotation, for example, tomato is forbidden to be cropped with pepper, eggplant and potato, and cucumber is forbidden to be rotated with zucchini, loofah and bitter gourd.

In addition to controlling soil-borne diseases by reducing the number of pathogenic bacteria in the soil, it is also possible to reduce the incidence of disease by improving the disease resistance of plants. Therefore, we can choose disease-resistant varieties or implement grafting technology to prevent diseases. The black-seeded pumpkin has a high resistance to melon wilt, and black-seeded pumpkin can be used as a rootstock to graft cucumber, which can control cucumber wilt.

The use of biological fertilizer can be used to increase the application of decomposed organic fertilizer to strengthen field management, improve soil structure, restore soil biological activity, thereby reducing the impact of soil pathogens and achieving the purpose of disease prevention.

1. Soil inlay treatment: During the fallow period of the shed in August, chop 100 kg of rice, wheat straw dry stalk + slaked lime or 15 kg of urea, add an appropriate amount of Trim microbial agent to plough and make furrows, fill with water, and then cover with plastic film, and close the greenhouse at the same time, and treat it for about 20 days.

2. Selection of disease-resistant varieties: The selection of disease-resistant or disease-resistant varieties can greatly reduce the harm of soil-borne diseases.

3. Crop rotation: It is the most economical and effective measure to prevent and control disease-borne diseases, and the rotation between crops, especially the early rotation of water, can receive twice the result with half the effort to prevent the occurrence of soil-borne diseases. Different diseases need different years of crop rotation, and the time of crop rotation must be mastered to be effective

What do you need to know about the prevention and control of pepper seed diseases? Soak seeds in warm soup: Soak pepper seeds in hot water at 60 degrees Celsius with 3 times the amount of water for the seeds.

First, pour the seeds slowly, stirring as you pour, and soak for 12 to 24 hours when the temperature drops to 25 30. This method allows for the control of seed-borne diseases.

Soak seeds in warm soup: Soak pepper seeds in hot water at 60 degrees Celsius with 3 times the amount of water for the seeds. First, pour the seeds slowly, stirring as you pour, and soak for 12 to 24 hours when the temperature drops to 25 30. This method allows for the control of seed-borne diseases.

Zinc sulfate soaking: Soak seeds with zinc sulfate solution at 20-25 for 12 hours. This method can inhibit capsicum virus disease.

Copper sulfate soaking: first soak the pepper seeds in water for 10 12 minutes, then soak them in 1% copper sulfate solution for 5 minutes, and then take them out and wash them with water. This method prevents bell pepper anthracnose and bacterial keratopathy.

Nursery management focuses on regulating temperature-controlled water to facilitate slow and robust seedling growth. The suitable temperature for seedling growth is 22-25 degrees, and when the rice roots are 12 degrees and the rice leaves are 15 degrees, the growth will be stopped. If the seedling temperature is too low, often below 10 degrees, it will cause albino seedlings and bacterial wilt.

However, if the seedling temperature is too high, within 30 for a long time, it will cause adverse effects such as overgrowth, thin seedling height, small dry weight, low fullness, and poor root development. Rice seedlings at 0:00-7:

00 grows the fastest, so it is necessary to ensure that the temperature of the seedbed is in the range of 15-28, which is conducive to promoting the growth of seedlings. At the same time, it is also necessary to pay attention to the temperature difference between day and night is not too large, and the water content of potato production is controlled for dry seedling.

Before sowing, the seeds need to be dried, selected with salt water, and then soaked in l% quicklime to prevent the seeds from carrying bacteria. Until the bed surface of the seedbed exceeds 10cm, ensure that the bed * is flat and finely broken, the bed width is generally, the base fertilizer of the seedbed is generally high-quality organic fertilizer fertilization * soil, mixed with the seedbed *, and the temperature is 5 when the seedlings are sown. The amount of conventional seedlings is generally l759 square meters, the amount of seedlings used for plastic film perforation is 2509 square meters, and the amount of seedlings used for nutrient bowl seedlings is 709 trays.

Irrigate the field in advance to facilitate the growth of weed seeds. Then, the growing weeds are removed by a mechanical rake. After removing weeds in the field, transplant the seedlings after the temperature exceeds 12 degrees.

The planting density of transplanted seedlings must be reasonable, shallow, straight, uniform, stable and sufficient, which is conducive to the growth of seedlings.

First of all, we should choose high-quality varieties, timely watering and fertilization, and also need to spray some pesticides in time, remove diseases in a timely manner, do a good job of drainage and ventilation, keep the light sufficient, control the temperature, the temperature should be controlled at about 20, and you can also choose to use some pesticides and fungicides.

If you want to carry out virus control on the seeds of peppers, you should first choose the correct insecticides and herbicides, and pay attention to setting a reasonable humidity and temperature inside the greenhouse for peppers, and you should also water and fertilize regularly to maintain the permeability and activity of the soil.

To control pepper seeds, you need to get the pesticides and herbicides right first. You should also pay attention to setting the appropriate humidity and temperature in the greenhouse where you grow peppers. You also water and fertilize regularly to keep the soil alive. Breathable and active.

At this time, we should choose the right insecticides and herbicides according to the pintong species, pay attention to the temperature and humidity of the early planting, the temperature should be controlled between 18 degrees and 23 degrees, and the humidity should be grasped between 60% and 70%, and it should be watered and fertilized in time.

Summary. 1. Pepper cotton rot: spray 400 times of 72% Pulik water solution at the beginning of the disease, spray 2-3 liters per square meter, or spray 450 times of 15% Primamine water solution, spray 3 liters per square meter.

2. Alternaria melacea melanoma: spray 1000 times of 50% iprodione wettable powder at the early stage of the disease.

1. Spicy crack-resistant pepper cotton rot: at the beginning of the disease, spray 400 times of 72% Pulik water solution, spray 2-3 liters per square meter, or spray 450 times of 15% oxamine water agent per acre, spray 3 liters per square meter. 2. Alternaria melanosis mellitus:

At the beginning of the disease, spray 1000 times of 50% iprodione wettable powder.

What medicine is used for chili rotten.

It seems to be a lack of calcium.

It can be sprayed with 4000 times of 72 agricultural streptomycin or 500 times of 50 dt fungicide, 1 time in 7 days, 2-3 times in a row.

Hello, if you are deficient in calcium, you can supplement a certain amount of calcium fertilizer.

Do you still use other medicines?

Do you still use streptomycin.

Just use streptomycin.

Is it okay to add calcium fertilizer.

Hello, you can add calcium fertilizer.

Is it OK to use it with other fungicides?

Sugar alcohol calcium, boiled calcium, and calcium nitrate can be sprayed together.

It is also sprayed once every 7 days, sprayed 2-3 times.

In the future, it is necessary to pay attention to calcium fertilizer supplementation in advance.

<> pepper seedlings are prone to cataplexy, blight, virus disease, wilt and other diseases, and the prevention and control should be strengthened. In the early stage of cataplexy and blight, dixone 1000 times liquid spray was used to prevent and control it; Prevent and control viral diseases with enemy killing or Uranus 3000 times liquid spray; To prevent and control Fusarium wilt, irrigate the roots with 50% thiophanate-methyl wettable powder 500 times, and the above agents need to be continuously controlled twice, sprayed once every 7-10 days.

At the budding stage, the lower part of the young stem appears as water-stained spots, then the sick man turns brown, gradually shrinks into a solid shape, and finally collapses suddenly. When it is high temperature and humidity, there are many white cotton-like molds near the sick temple. The disease progressed rapidly, and at first a few small seedlings were seen to become ill, and after a few days, it spread rapidly, eventually causing the pepper seedlings to fall suddenly.

The rhizome of the seedling was injured at the affected site, and oval dark brown spots appeared on the lower part of the stem of the diseased seedling. and loss of water; Early mothers that turn black-brown wilt during the day and recover at night, but as the signs expand, they circle around the stem, the affected parts shrink and wither, and eventually the plant dies. Light brown spider web-like fungi often occur in the affected area.

But it is not conspicuous. The leaves turn light green, then yellow, and eventually wither. The disease occurs after the cork of the seedlings, which do not fall down even if they die, so the peppers wilt.

The seedbed should be made on a disease-free plot with high terrain, windy, sunny, easy drainage, loose soil, fertile, and no vegetables for more than three years. The farm manure used to prepare the nutrient soil must be fully mature. Pour water at the bottom of the seedling, and generally do not need to add water before separating the seedlings.

When the saliva is too dry and you need to drink water, you can gently pour it out with a watering can on a sunny morning. It is necessary to keep the seedbed film clean, increase light, increase ground temperature, and promote root development and strong growth of shoots. Prevent early seedlings, seedlings, lack of seedlings, and lack of seedlings.

Reduce the exhaust humidity in time, strengthen the seedlings, promote the seedlings to be strong and strong, and enhance the ability to resist diseases. The pathogen is hyphae or sclerotia, wintering in the soil and organic matter, strong decay, can survive in the soil for 2 3 years, has a wide range of parasitism, and the bed-like soil with bacteria is the main cause of seedling damage.

The minimum temperature of pathogen development is 13, the highest is 42, and the highest is 24, and the temperature is most likely to occur at 15-21, and the disease is severe at 18-20. The pathogen overwinters in the soil with oospores or hyphae, and when the conditions are suitable in the second year, the oospores germinate, and directly invade and parasitize with swimming bud tubes, producing rotten seedlings, and the pathogen is highly corrosive and can survive in the soil and organic fertilizer for a long time. Spread through rainwater, compost, farm tools, etc.**, and not sterilizing or disinfecting the seedbed soil is the root cause of the disease.

Adopt rapid seedling raising or soilless seedling raising method, strengthen seedbed management, and see that the seedlings are released in a timely and appropriate manner. Avoid low temperature and high humidity conditions, and do not water on rainy days.

First of all, there is the possibility of wilting, there will be a series of pest and disease disasters, and there is a high probability of the death of the whole plant, which is also because of the emergence of underground pests, at this time we must pay attention to do a good job of insecticide, so that the pepper can grow better.

Viral diseases, wilts, these diseases are common pests and diseases, and we should touch some pesticides to prevent pests and diseases, so that it will be fine.

Pepper cataplexy: The common symptoms of cataplexy at the seedling stage are rotten seeds, dead seedlings and cataplexy. Rotten seeds are infected by pathogens before the seeds germinate or have just germinated after sowing, resulting in rot and death.

Insect pests have planthoppers, lepidopteran larvae, harm, do a good job of prevention, use thiamethoxam pymetrozine, diseases have gray mold, blight, virus disease, use related agents for prevention and control, such as pythium, enoylmorpholine, etc., do a good job of targeted prevention and control, greenhouse pepper diseases mainly include virus diseases, blight, gray mold, etc., such as virus diseases.

1 There are three main types of symptomatic pepper virus disease, one is the mosaic type, which mostly occurs at the seedling stage and before the first flowering and young fruits, and the leaves on the top of the plant are obvious yellow-green flowers and leaves, and some of the leaves are shrunken and obviously brown-green mottled; The second is the necrotic type, the base of the top leaf of the diseased plant or along the main vein becomes brown and necrotic, and some young flower stalks become brown and necrotic, causing leaf drop, flower drop, fruit drop, and the top forms a light rod; The third is the stripe type, which mainly occurs on the fruit in the later stage, mostly from the tip of the fruit to the upper half of the brown stripe, depressed, and the fruit turns yellow, and the masses are collectively called "yellow tips".

2 Pathogenesis conditions pepper virus disease is mainly aphid and contact transmission, seeds can also be transmitted with poison, high temperature, drought, heavy stubble continuous cropping disease is serious, generally sharp pepper than garden pepper disease lighter.

3 Prevention and control methods.

##41;The seeds were disinfected and soaked in 10% trisodium phosphate solution for 30 minutes, washed and germinated for sowing.

##41;After the whole shed is disinfected and the stubble is harvested, 300 times of the liquid is cleared with 5% bacteria before and after planting; Add aphid treatment agent mixed spraying to eliminate residual germs and aphids.

##41;The prevention and control of mosaic virus disease at the seedling stage can be prevented by amino-oligosaccharides and carbendazim.

Thanks for the review.