What does the fruit of chili anthracnose look like and how to prevent it?

Pepper fruit infected with anthrax will have brown water-soaked lesions on the fruit at the early stage of the disease, and the lesions will expand and sink with the development of the disease, and some small black particles in the shape of concentric rings will be produced on the lesions, and the fruit will rot in the case of high humidity, and the lesions on the fruit will be perforated or cracked in the case of dry air.

Seed prevention: The use of varieties with strong resistance to anthracnose, such as Zhongnong No. 5 and Xia Qing No. 2, can effectively reduce the occurrence of diseases.

Soil prevention: pepper is not suitable for heavy cropping, and long-term heavy cropping will lead to the accumulation and increase of various underground pests and diseases in the soil, including anthracnose bacteria, year by year, which is easy to lead to the frequent occurrence of diseases. For pepper planting areas, it is recommended to carry out 2-3 years of rotation planting with gramineous field crops or non-melon and non-nightshade crops to reduce the number and damage of anthracnose bacteria in the field.

In the early stage of fruit disease, there are moist, yellow-brown oval or irregular lesions, the lesions are depressed, the edges are brown, **gray-white, with the aggravation of the lesions, there are raised concentric rings on the surface, which are mostly integrated by small dots, sometimes black, sometimes orange-red for seed disinfection, timely cleaning of the countryside, reducing the initial infection and re-infection of the field fungus source, strengthening cultivation management, scientific management of fertilizer and water, reasonable dense planting, and enhancing plant disease resistance.

Seed prevention should be done well. Seed prevention can be divided into two parts. First, the use of varieties with strong anthracnose resistance, such as Zhongnong No. 5 and Xia Qing No. 2, can effectively reduce the occurrence of diseases; 2. Whether it is live broadcast or seedling, seeds should be disinfected and sterilized in advance before sowing, and can be soaked in warm water at about 52 degrees for half an hour, or 50% amobamu 500-600 times or glacial acetic acid 100-150 times soaked in 30-

The pepper anthracnose fruits are as follows:

Prevention and control methods (1) select disease-free fruits to retain seeds or seeds for disinfection.

2) Implement crop rotation.

Crop rotation with melons, beans, onions and garlic vegetables, and the application of marine phosphorus and potassium fertilizer to promote the healthy growth of plants and improve disease resistance.

3) Strengthen field management.

Timely cultivation, top dressing, watering, insect treatment, removal of diseased plants, diseased fruits, and deep burial, do a good job in field drainage.

Pepper anthracnose, mostly occurs in high humidity environment, there are black spots anthracnose, black anthracnose and red anthracnose, mainly for the damage to the fruit, usually produce ring-shaped lesions, it is easier to distinguish, it is recommended comprehensive prevention and control, control the temperature and humidity, enhance the growth of pepper, the early stage of the disease with oxim strobin, tebuconazole, or difenoconazole, frost manganese zinc spray prevention, interval of about ten days once, even two to three times.

Hello, pepper anthracnose, the onset of pepper fruit there are concave marks, black-brown marks. It can be prevented and treated with prochloraz or difenoconazole or pyraclostrobin or amimiaoshu and other drug sprays.

When anthrax is severe, it is personally recommended to spray prochloraz + difenoconazole + potassium dihydrogen phosphate together for prevention and control, once every 5-7 days, 2 times in a row.

Pepper anthracnose, commonly known as ring pattern disease and wheel spot disease, is a disease that occurs on peppers caused by the infection of Spinospora and Rotespora longus. Its prevention and control can be carried out from reasonable crop rotation, seed disinfection, strengthening management, spraying control, etc.

1. Reasonable crop rotation. Implement crop rotation with melons and beans and vegetables for more than 2 years.

2. Seed disinfection. The seeds are first soaked in water for 6 12 hours, then soaked in 1 copper sulfate solution for 5 minutes, washed with water after being removed, and then mixed with a small amount of slaked lime powder or plant ash to promote germination. You can also blanch seeds with hot water, soak them at 55 for 30 minutes, cool them with cold water and dry them for sowing.

3. Strengthen management. High ridge mulching is used for cultivation to avoid flood irrigation and timely drainage when there is stagnant water; Reasonable ventilation to avoid high temperature and humidity; Appropriate application of phosphorus and potassium fertilizer to improve plant disease resistance; Remove diseased fruits, leaves and stumps in time to reduce the source of bacteria.

4. Spraying prevention and control. At the initial stage of the disease, you can choose to use 500 times of 65 dycozeb wettable powder, or 400 times of 70 mancozeb wettable powder, or 1200 times of 25 azoxystrobin suspension, or 400 times of 40 polysulfur suspension, or 600 times of 75 chlorothalonil wettable powder. Spray 1 time every 7 10 days, 2 3 times in a row.

Pepper Anthracnose Symptoms:

It mainly damages near-ripe pepper fruits. The infected fruit first appears moist, brown oval or irregularly shaped lesions, slightly concave, with slightly raised concentric ring patterns, and obvious ring-shaped orange-red dots appear on the surface of the spots, and then turn into black dots. When the humidity is high, it overflows with pale pink granular viscosity, which is the conidia of the pathogen.

When drying, the diseased part shrinks and thins into a paper-like shape and is easy to break. Leaf infection mostly occurs on the old leaves, the lesions are initially water-stained, and the brown irregular shape after enlargement, the lesions are gray-white, and also produce small black grain spots arranged in a wheel-like manner, and the diseased leaves are easy to dry up and fall off when they are severe. The stems and stems are infected, with brown lesions with irregular short strips and depressions, and the epidermis is prone to cracking when dry.

Summary. 1. Harmful symptoms of pepper anthracnose After the occurrence of pepper anthracnose, it will cause a large number of fallen leaves and rotten fruits, usually reducing the yield by 20%-30%, which seriously affects the economic benefits of vegetable farmers. Pepper anthracnose mainly infects fruits, but can also damage leaves, stems, and stalks.

1. Harmful symptoms of pepper anthracnose After the origin of pepper anthracnose, the base celery will cause a large number of fallen leaves and rotten fruits, which usually reduces the yield by 20%-30%, which seriously affects the economic benefits of vegetable farmers. Pepper anthracnose mainly infects fruits, but can also damage leaves, stems and fruit stalks.

1. Harmful symptoms of pepper anthracnose After the origin of pepper anthracnose, the base celery will cause a large number of fallen leaves and rotten fruits, which usually reduces the yield by 20%-30%, which seriously affects the economic benefits of vegetable farmers. Pepper anthracnose mainly infects fruits, but can also damage leaves, stems and fruit stalks.

It is recommended to use rice chloramine for spray control.

Symptoms of pepper anthracnose: Pepper anthracnose mainly affects the fruits and leaves that are close to maturity.

After the fruit is infected, moist, brown oval or irregularly shaped lesions first appear, and the diseased part will be slightly sunken, and the spots will appear obvious ring-shaped orange-red small spots, and then turn into black dots, which are the conidia disc of the pathogen. When the weather is humid, it overflows with a pale pink grainy sticky substance, which is the conidia of the pathogen.

When the weather is dry, the diseased part shrinks and thins into a paper-like shape and is easy to break. After the leaf is infected, the lesion is punctate pale green at the initial stage, and then expands to brown and nearly round, and the surrounding yellow-green lesion is about 1 mm in diameter. In the later stage, the lesions are often ruptured in the middle, and the diseased leaves fall early.

After rain or when wet, pink conidia or black dots often appear on the lesions.

Prevention and control: remove diseased leaves and fruits at the early stage of the disease, and then spray, should be mastered before and after the rain spraying, and can take a combination of root irrigation and spraying. You can also use 4 agricultural resistance 120 melons, vegetables and tobacco special type 100 times liquid soaking for 12 hours, remove the cool and semi-dry and sow directly.

Infection cycle and epidemic law

The pathogen can also overwinter with conidia and mycelium attached to the seeds with the residual tissues of the diseased sclerotia. The sclerotia produced by the conidia in the residual tissues of diseased plants in the field when the environmental conditions are suitable, are transmitted to the host plant through rainwater splashing or air current, and invade from the host wound, causing the initial infection.

After the invasion, disease spots appear after latent breeding, and new generation conidia are produced in the affected area, which are spread by wind and rain or insects and other media, and re-infect multiple times to aggravate the damage.

The main peak incidence of pepper anthracnose in Shanghai and the middle and lower reaches of the Yangtze River in China is from May to September. The incidence is severe in the year when there is high temperature and rain during the annual plum rain and high temperature and thundershowers in summer; The disease was severe in the low-lying and poorly drained plots; Fields that are overly densely planted, poorly ventilated, improperly fertilized or partially applied with nitrogen fertilizer are severely affected.

Pepper anthracnose is mainly used to damage near-ripe pepper fruits, infected fruits. Anthrax is a common disease on peppers, especially in the high temperature season, the fruit is burned, and it is very easy to be complicated by anthrax, so that the fruit completely loses its commercial value. Spicy (sweet) pepper anthracnose mainly harms fruits and leaves, and can also infect stems, and the control methods are as follows

1. Agricultural prevention and control.

1. Choose excellent varieties.

2. Disinfection breeding. Soak seeds in 100 times liquid with 4% pesticide resistance 120 melons, vegetables and tobacco special type for 12 hours, remove them and sow them directly after they are cooled and semi-dry. It can also be pre-soaked with cold water for 1-2 hours, then soaked in 55 warm water for 10 minutes or soaked in 50 warm water for 30 minutes, rinsed with water after removal, and sown after cooling.

3. Reasonable crop rotation. Implement 2-3 years of crop rotation and stubble with wheat, corn and other grasses, and avoid continuous cropping with melons and vegetables. And the terrain is high and dry, the drainage and irrigation are convenient, and the ventilation is good.

4. Strengthen cultivation management. Before planting, the soil should be deeply turned, and more high-quality decomposed organic fertilizer should be applied, and phosphorus and potassium fertilizers should be increased to improve the disease resistance of plants. According to the characteristics of the variety, water and fertilizer conditions, reasonable dense planting, avoid over-dense planting, the use of high furrow cultivation, plastic film mulching, to promote the growth of pepper roots.

The shed should be ventilated and dehumidified in time to avoid high temperature and high humidity; Drain water in time after rain to prevent water accumulation on the ground and protect the root system. If the mulch film is not covered, more cultivation and less watering should be done in the early stage of growth to increase the ground temperature and enhance the resistance of the plant. In summer, it is hot and dry, and it is suitable for watering in the evening to reduce the ground temperature.

Harvest in a timely manner, and remove diseased leaves, fruits and residues in time.

2. Chemical control.

In the early stage of the disease, the diseased leaves and fruits should be removed, and then sprayed, which should be sprayed before and after the rain, and the root irrigation and spraying can be combined. It can be sprayed with 600 times of 75% chlorothalonil wettable powder, or 1500-2500 times of 50% Shibaogong wettable powder, or 1000-1200 times of coronaviruse dry granules, or 1000 times of easy water dispersible granules, or 50% mixed sulfur suspension 500 times, or 50% carbendazim wettable powder 500 times, or 70% mancozeb wettable powder 500 times.

Chili pepper is a more common vegetable variety in daily life, often used for seasoning, can make the dish more fresh and spicy, make people eat more appetite, now more and more people are planting chili, so in the process of planting chili, what diseases are prone to occur? How to prevent and control pepper anthracnose? Let's find out!

Chili pepper is a more common vegetable variety in daily life, often used for seasoning, can make the dish more fresh and spicy, make people eat more appetite, now more and more people are planting chili, so in the process of planting chili, what diseases are prone to occur? How to prevent and control pepper anthracnose? Let's find out!

1. What are the diseases on chili peppers?

1. Viral diseases.

After the occurrence of the disease, dark green spots will appear on the leaves, the flowers and leaves will not shrink, forming linear leaves, slow growth, smaller fruits, and severe dwarfing.

Moreover, in the later stage, the diseased leaves turn yellow, and the phenomenon of defoliation will appear.

2. Epidemic diseases. Seedlings will be infected from the base of the stem, the diseased part will appear water-stained soft rot, the lesion is dark green, the diseased part will appear lodging, after the root system is infected, there will be brown lesions, resulting in the death of plant wilt, in a humid environment, there will also be a white mold layer, the fruit is infected, the lesions are water-stained dark green soft rot spots, the humidity is large, and there will be sparse white mold.

3. Anthrax.

Anthrax mainly harms fruits, leaves and fruit stems, after the fruit is infected, there are water-stained yellow-brown long round spots, brown edges, **gray-brown, in a humid environment, the surface of the lesions overflows red sticky, and the leaves are infected with green water-soaked spots.

4. Botrytis cinerea.

The seedlings become diseased, the cotyledons rot, and the seedlings fold and die.

Irregular water-soaked lesions appeared on the stems, and white soft rot appeared on the diseased fruits.

5. Brown spot disease.

The disease damages the leaves, with round brown lesions, and in severe cases, the diseased leaves turn yellow and fall off, and there is a layer of black mold in the center of the lesions when wet.

2. How to prevent and control anthracnose in pepper?

1. Choose disease-resistant varieties.

Planting peppers can choose varieties with strong disease resistance, which is very helpful to improve pepper anthracnose.

2. Reasonable crop rotation.

The implementation of 2-3 years of guess state talk about crop rotation, the best in the front crop is melon vegetables, bean vegetables, and the terrain is high and dry, convenient drainage and irrigation, good ventilation.

3. Strengthen cultivation management.

Before planting, deep ploughing of the land, more high-quality rotting farmhouse fertilizer, phosphate fertilizer and potassium fertilizer, can improve the disease resistance of plants, and carry out regular drainage, timely harvesting, and timely removal of diseased fruits.

4. Pharmaceutical prevention and control.

After the onset of the disease, you can use 75 chlorothalonil wettable powder 600 times liquid or 50 Shibaogong wettable powder 1500 2500 times liquid for prevention and control, spraying spike touch every 7-10 days, the effect is very good.

The above is all the introduction of pepper diseases and prevention methods, such as traces of fruit farmers want to grow high-yield peppers, must master the scientific disease prevention and control methods, I hope the above content will help you.