What are the symptoms of chili anthracnose? How to prevent and control pepper anthracnose?

Yellowish-brown lesions appear and may be irregular in shape, sometimes oblong, with reddish-brown edges and grayish-brown in the middle. Be sure to spray pesticides in a timely manner, and remove viruses in a timely manner.

There may be some irregular spots, which will cause the plant to wilt and cause the plant to die, so it is necessary to remove weeds on time and spray the drug on time.

Pepper anthracnose is a common pepper disease, which often causes peppers to cry out for leaf loss and fruit rot.

Today, let's talk about what are the symptoms of chili anthracnose and how to prevent and treat chili anthracnose.

1. The causes of pepper anthracnose.

Poor drainage and high planting density in case of rain can lead to the occurrence of pepper anthracnose.

If the plant is deficient in fertilizer and nutrients, the plant disease resistance is weak, and the number of pathogens in the field is large or the seeds carry bacteria, which is also conducive to the disease.

Extensive management, due to leaf spot disease, many fallen leaves, and fruit exposure under the scorching sun, can induce pepper anthracnose.

2. Symptoms of anthracnose in Chili Pepper Rock.

1.The leaves are infected, initially fading green water-soaked spots, gradually turning brown, pale gray in the middle, and small black spots on the lesions.

The fruit stalk is damaged, and there are brown sunken spots.

2.When the stems and fruit stalks are infected, irregular brown lesions may appear, slightly sunken, and easy to crack when dry.

3.The fruit is damaged, and begins to produce water-stained yellowish-brown nearly round or irregular lesions, followed by slightly concave, **gray-brown, with raised concentric ring patterns and dense small black spots on the wheel patterns.

3. How to prevent and treat pepper anthracnose.

1.Chemical control can be treated with anthrax with benzopyraclostrobin, pyroxystrobin, prochloraz, pyrazoledesen, oxime strobin tebuconazole and other agents, pay attention to the rotation of drugs.

Or during the onset period, spray 1 time after harvesting a batch of pepper fruits, focusing on the lower leaves and the back of the leaves.

2.Seeds can be disinfected by soaking seeds in 1% copper sulfate solution for 30 minutes or 50% carbendazim wettable powder 500 times for 1 hour.

3.Strengthen field management, reasonable dense planting, maintain good ventilation and light transmission conditions, can reduce field humidity, avoid rough bends when cultivating and weeding, and avoid damage to plant roots.

Balanced application of nitrogen, phosphorus, potassium fertilizer, appropriate amount of calcium, boron and other trace elements, avoid the application of non-rotting organic fertilizer.

A small number of diseased fruits and leaves can be removed and buried or burned.

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.

Symptoms of pepper anthracnose.

This disease mainly affects near-ripe pepper fruits, and the affected fruits first appear moist, brown oval lesions, slightly concave, and obvious ring-shaped orange-red dots appear on the spots, and then turn into black dots, which are the conidia disc of the pathogen. When the weather is wet, it will overflow with pale pink granular viscosity, which belongs to the conidia mass of the germ. Leaf infections mostly occur on mature leaves, which can produce near-round brown lesions, but also produce small black spots arranged in a wheel-like pattern, and if the disease is severe, it can also cause defoliation.

The stems and stems of peppers are infected, and brown lesions with irregular short strips of depression appear, and the epidermis is prone to cracking when dry.

Causes of pepper anthracnose.

When we visited the field, we found that the local heavy crop planting has a high pathogen base, and the disease is more likely to expand and spread. The scattered diseased leaves and fruits are difficult to clean up in time, and even new stubble may cause disease outbreaks and epidemics. In addition, farmers apply nitrogen fertilizer, poor drainage, poor ventilation and light transmission, which will accelerate the epidemic of diseases, and the use of drugs is not timely, ignoring the protection and maintenance of pepper roots in the early stage, and unreasonable fertilization and medication, which are all factors that cause the outbreak of pepper anthracnose.

Comprehensive control measures for pepper anthracnose.

1) Reasonable crop rotation: we can consider at least 3 years of crop rotation with non-melon crops, and for areas with conditions, it is also necessary to implement water-drought rotation, which can effectively reduce the occurrence of pepper anthracnose.

2) Clean the field in time: After the pepper is harvested, we must clean up the diseased leaves, old leaves and plant residues out of the field in time, and concentrate on deep burial or incineration, which can effectively reduce the occurrence of anthrax in the second year.

3) Reasonable irrigation: in the flowering and fruiting period of pepper, we should irrigate reasonably according to the moisture, and in the later stage of pepper growth, we should also avoid flood irrigation, and try to implement drip irrigation and sprinkler irrigation in areas with conditions, which can effectively reduce the occurrence of anthracnose in pepper.

4) Pharmaceutical prevention and control: In the early stage of the disease, you can consider spraying 600-800 times of 70% thiophanate-methyl wettable powder, 500-600 times of 80% mancozeb wettable powder, 800-1000 times of 75% chlorothalonil wettable powder, and 800-1000 times of 56% azoxystrobin chlorothalonil, with an interval of 7-10 days, and a total of 2-3 times of textile is required.

Black anthracnose mostly occurs on the fruits and leaves of peppers, especially mature fruits and old leaves. The lesions on the fruit are brown and water-stained, and after enlargement, they are concentric rings with irregular shape and slight bulge. The numerous black grains that grow on the lesions are the conidia of the pathogen.

There are moist discoloration circles around the periphery of the lesion. Diseased fruits are hung on branches after drying. The lesions on the leaves are irregularly shaped, with brown margins and gray middles.

Red anthrax occurs mostly on young and ripe fruits. The lesions are yellowish-brown and watery, pitted. The lesions are densely populated with vermilion dots, arranged in concentric rings, and the entire surface of the lesions overflows with a reddish sticky substance when wet.

This bacterium will affect the yield of peppers, which will lead to the rotting of peppers, and this pathogen requires the use of pesticides**, which has a very large impact on peppers, and this pathogen will affect the growth of peppers.

In addition to peppers, the disease also infects eggplants and tomatoes. It mainly harms fruits, especially those near maturity, and also infects leaves and stems.

It is easy to cause the pepper to rot, and there will be a lot of changes, the leaves will also turn yellow, and there will be a lot of spots on the surface of the pepper.

In the process of pepper cultivation, plant disease-resistant varieties are preferred to reduce the harm of anthracnose to peppers. Generally, pepper varieties are more resistant to disease. Choose sterile seeds, or use chemically treated seeds.

Captive seeds are harvested from disease-free fruits. Seeds suspected of carrying bacteria should be soaked in warm water at 55 °C for 10 to 15 minutes, or in a solution of 70% mancozeb or 50% carbendazim for two hours, at 1000 mg per kilogram of water. Strengthen on-site management.

Scientific and reasonable dense planting, avoid continuous cropping, crop rotation, appropriate increase of phosphorus and potassium fertilizer, cultivate strong seedlings, and improve disease resistance.

Prevent water accumulation in the field and pay attention to changes in moisture. To pick fruits in time, Anthracnose is a weak parasitic bacterium, in the process of ripening and aging, the damaged fruit is the most susceptible to disease, timely picking can avoid disease. Regularly remove diseases and weeds from rural areas to reduce diseases.

Zanthoxylum anthracnose is an important disease in China after fruit bearing. It mainly harms ripe fruits, old leaves, and stems. When the leaf is damaged, the leaf margin lesion is brown, rounded, or irregularly shaped, with a light gray center.

When the fruit is damaged, brown water-soaked lesions can be seen, which are round or irregularly shaped, and the plaques are concave, which can cause a large amount of fruit rot and a large yield in severe cases. The cause of this disease is continuous planting, or planting of nightshade vegetables in the same place for many years, high planting density, poor field permeability, poor field drainage and irrigation, high temperature and humidity due to untimely ventilation of greenhouses, insufficient basal fertilizer and local application of nitrogen fertilizer are the causes of this epidemic. When the pathogenic bacteria are latent in the field, only when the conditions for the occurrence of the disease are met, the symptoms of the disease will be infected, and anthracnose is no exception.

The optimum temperature for pepper anthracnose is 27 degrees Celsius with a relative humidity of about 95%.

It can be seen that high temperature and high humidity are the main conditions for the onset of the disease. Overwintering bacteria produce conidia, which invade directly from crop wounds and epidermis through wind, rain, air currents, and insects. A:

In the prevention and control of anthracnose of Zanthoxylum, people generally only pay attention to chemical prevention and control, and always ignore agricultural prevention and control. Agricultural prevention and control is good at daily drips and daily management. If agricultural prevention and control is done well, the diseases will be greatly reduced, the use of chemical pesticides will be less and less, and the residue of pesticide in pepper will be less and less, which is very beneficial to people's health.

The house program can choose excellent varieties, disease resistant, and then the seeds can be disinfected, so that it can also resist some, and can also reduce the occurrence of this disease through reasonable crop rotation, and can also be sprayed by strengthening cultivation management, chemical control can be sprayed, 75% chlorothalonil wettable powder, 600 times liquid or 50% Shibaogong wettable powder, 1500 to 2500 times the solution, or the crown fungus clear dry granules, 1000 to 1200 times the liquid and so on.

or 50% mixed sulfur suspension, 500 times liquid, 50% carbendazim visual powder, 500 times liquid, 70% mancozeb wettable powder, 500 times liquid or 40% carb suspension 500 times liquid.

You can use nitrogen fertilizer, or spray pesticides, understand the causes of the formation of diseases, formulate prevention and control plans, pay attention to the speed of germ reproduction, choose excellent varieties, or disinfect seeds, and have cultivation methods.

Spray pesticides in time, choose peppers with excellent varieties for planting, pay attention to the outside temperature, water in time, and pay attention to the intensity of the sun.

Use pesticides and herbicides, water and fertilize in time, ensure soil fertility, pay attention to ventilation problems, and be sure to pay attention to the right planting temperature.

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 prevention and 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 cool 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 added 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 humidityDrain 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 plants. 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, remove the diseased leaves and fruits, and then spray, should be mastered before the rain and after the rain, and can take a combination of root irrigation and spraying. 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 coronavirus, or 1000 times of easy to retain water dispersible granules, or 500 times of 50% mixed sulfur suspension, or 50% carbendazim wettable powder 500 times, or 70% mancozeb wettable powder 500 times.