What are the common pests and diseases when growing chili peppers? How can it be prevented?

What are the common pests and diseases when growing chili peppers? How can it be prevented? It takes a long time for peppers to be planted in the garden for several months, during which many diseases will occur, and the main diseases encountered in pepper cultivation and the prevention and control methods are now shared with you.

Dump disease and blight: pepper seedlings are prone to fall disease and blight due to high air humidity and other reasons, and the control effect is obvious with pyric (downy mildew hydrochloride) or chlormycolin. Viral Diseases:

Peppers cultivated in summer and autumn are highly susceptible to viral diseases due to high temperatures and low soil moisture content, so soaking seeds in 10% trisodium phosphate solution for 10 minutes can prevent viral diseases. High temperature and drought induce the occurrence and spread of viral diseases, and high temperature and rain often have the epidemic of viral diseases. If the diseased plants are found, they should be set aside outside the park and treated alternately with drugs such as hydrochloric acid-maringua, bacterium poison clearing, and photosynthetic virus.

Root rot and wilt: After the pepper is planted, it is very easy to produce root rot and wilt due to soil-borne pathogens. Prevent root irrigation with methyl tobuzin, dimetallin and other agents.

Blight: Blight is a common disease in pepper cultivation, and the diseased parts generally occur from the stems or branches. The drug is 64% alum, DuPont colo, etc., once every 7 days, twice in a row.

Physiological diseases: Pepper flower drop, fruit drop, and leaf drop (three drops) are very easy to occur in pepper production, and have a great impact on yield. The main cause of flower drop is the effect of low temperature on pollination and the elongation of pollen tubes, and the drought of soil and air can also cause flower drop.

High temperature, drought and high temperature rain and waterlogging make the root absorption capacity weak, which is easy to cause fruit drop and leaf drop. Prevent and keep the soil moisture not too large or too small, and keep the pepper temperature 25-30 degrees during the day and 12-16 degrees at night. Botrytis cinerea:

It is a common disease in the production of peppers, and it is used with Pythium, Sukelin or Kaiser. Clean up the sick body before administering medicine. In production, it is necessary to prevent excessive humidity and high planting density.

When planting peppers, the common pests and diseases during pepper planting are mainly cotton bollworm, aphids and beet armyworm. The main methods of prevention and control are spraying drugs, during the planting of peppers, the proportion of pesticides is adjusted, and the right time is selected to spray, so that the harm of pests and diseases can be minimized.

Wilt, powdery mildew, virus disease, blight, Verticillium wilt, these are the most common, we must use targeted pesticides, but also pay attention to the use of organic fertilizer, ensure the composition of organic fertilizer, do not let the nutrients too single.

Anthracnose, root rot, blight, powdery mildew, blight, silk. It is necessary to understand the law of disease, and at the same time, it is necessary to prevent and control it in advance, spray chemicals in advance, and choose varieties with strong disease resistance for planting.

Symptoms: Roots, stems, leaves, and fruits can be damaged. The seedlings are infected and the base of the stem is water-soaked and rots, and they die quickly.

Adult plants are also mostly infested from the base of the stem, and the lesions are water-soaked and dark green, and then become brown and slightly concave, and the cortex under the epidermis becomes dark brown. Any part of the stem can be infected, the lesions often spread around the stem, and the upper tissues wilt and die rapidly. The leaves are paper-thin, light brown, cracked and detached; When the humidity is high, the surface of the lesion is white.

The stem pathogen can enter the fruit through the fruit stalk, forming dark green, water-soaked lesions, white on the top, and the diseased fruit turns brown and shrunk after soft rot and hangs on the branches.

Control methods: select disease-resistant varieties; Implement crop rotation; Pepper is rotated with cruciferous, leguminous or onion and garlic vegetables for more than 3 years; Strengthen management. Use disease-free soil to raise seedlings, cultivate high ridges, cover with plastic film, prevent water accumulation in the field, and remove weeds and diseased plants in time; Chemical control.

In the early stage of the disease, you can choose to use Fengqia Genbao 10g+ partner to irrigate the roots.

Control method: seed treatment. Pre-soak with cold water for 1 2 hours, then soak in 55 warm water for 10 minutes, and then put it in cold water to cool and then germinate and sow seeds.

The seeds can also be soaked in cold water for 10 12 hours, then soaked in 1% copper sulfate for 5 minutes, or soaked in 500 times of 50% carbendazim wettable powder for 1 hour, and then neutralized the acidity with plant ash or a small amount of lime after fishing, and then sowed. Strengthen field management. Reasonable dense planting, formula fertilization, timely ventilation of the shed, avoid high temperature and high humidity, pay attention to drainage, timely remove diseased leaves, fruits and residues, and implement 2 3 years rotation with non-homogeneous vegetables.

At the beginning, the base of the seedling stem appeared water-soaked lesions, soon developed upward, and turned yellow-brown, the young stem shrunk after the diseased part lost water, or became linear, causing the seedling cataplexy, the cotyledons at the time of lodging have not yet withered, and the furrow surface of cataplexy disease develops rapidly from point to piece, often causing dead seedlings. Control measures: choose disease-resistant varieties.

You can choose five-leaf eggplant, seven-leaf eggplant, purple round eggplant, bulb red, purple eggplant and bamboo silk, etc.; Seedbed soil treatment: when sowing, the seedbed is watered once permeable, 9-10 grams of 40% pentachloronitrobenzene per square meter, 40 kg of fine dry soil is added, and 1 3 is taken to lay the bottom, and 2 3 is sown to cover the seeds; Pesticide control: the temperature and humidity of the nursery shed and room are easy to develop when the temperature and humidity are suitable, until the true leaves grow and the young stems are plugged.

You can choose to use Fengqia root confirmation water spray.

Blight, powdery mildew, gray mold, downy mildew, sclerotinia sclerotiorum, umbilical rot, aphids, thrips, etc.; Regular sterilization, regular disinfection, good protection and pest control, use special tools and potions.

The first point is that black insects will appear when planting, which is very terrible, and must be paid attention to, the second point will appear white pests and diseases, which is very terrible, and the third point will also appear that the black hole is all rotten, and the fourth point should be protected accordingly, and some corresponding drugs can be sprayed for soil renovation.

Common diseases of eating pepper are blight, blight, powdery mildew, etc., and powdery mildew can be sprayed with more than 1000 times of the solution. Aphids are controlled with 40% fenvalerate.

Chili peppers like warm temperatures, water and fertilizer, but high temperature is easy to get sick, too much water is easy to shih seedlings, fertilizer is easy to burn roots, so there are different management requirements at different stages of the whole growth period. Symptoms of pepper blight are brown to brown spots on the base of the stem and branches of the pepper. If the relative humidity in the field is high, the affected area indicates the appearance of white mildew and round spots on the leaves.

To tell the truth, there are quite a lot of pepper pests and diseases, there are dozens of kinds, even the common diseases are virus diseases, blight, cataplexy, root rot, blight, anthracnose, downy mildew and other more than 20 kinds, common insect pests are tobacco worms, tobacco worms, aphids, spotted submarine flies and other ten pepper virus diseases This is caused by cucumber leaf virus and tobacco leaf virus infection, by some aphids attached to the pepper leaf surface to carry the transmission, serious conditions will lead to leaf necrosis, leaf drop, fruit drop, this virus transmission rate is high, the harm is relatively large.

The main pests and diseases of <> pepper are: cataplexy, blight, virus disease, Verticillium wilt, blight, anthracnose, soft rot, sclerotinia sclerotinia disease, gray mold, cotton blight, scab and bacterial wilt and other 12 kinds of impregnated diseases, 3 kinds of physiological diseases such as roots, umbilical rot and solar burn, drug control: we can use 25% methyl frost liquid wettable powder and fine soil to mix well, sow in the nutrient soil or spray 72% Prixene water solution 400 times after seedlings emerge, or 15% chlormycolin water solution 700 times, spray 2-3 times, once every 7-10 days.

For powdery mildew, powdery mildew is difficult to detect, so prevention is the main focus. Benzofluoramide or prochlorazine EC is usually used for spraying, and it is sprayed once every 10 days or so. When spraying, spray all plants thoroughly, especially the underside of pepper leaves.

After pepper infection with viral disease, yellow-green mosaic spots and dwarf plants were seen on the leaves. Subsequent onset of the disease can affect flowering and fruiting, and even if it bears fruit, the fruit will be uneven and difficult to enlarge. Brown necrotic streaks and dead spots can be seen on the surface of the newly born stems, leaves, and fruits.

The main pests and diseases of pepper are soft rot, blight, bacterial wilt, virus disease, do a good job of protection, to prevent crop rotation, you can use neophytomycin for sterilization, the field can not be too wet, rainy days to drain in time.

There are many common diseases of peppers, such as: powdery mildew, virus disease, leaf spot, wilt, spot blight, anthracnose, blight, sclerotinia sclerotinia and so on will occur during the growth of peppers. Choosing seeds of varieties with strong disease prevention ability can greatly reduce the occurrence of diseases.

The demand for water and fertilizer for the growth of pepper is still relatively large, but not too much water and fertilizer can not be given at one time, but according to the growth of pepper reasonable fertilization, in addition to the commonly used nitrogen, phosphorus and potassium fertilizer, but also to increase the application of organic fertilizer, microbial agents, etc., which can improve the soil structure, improve the soil fertilizer retention capacity, and enhance the stress resistance of crops. When pepper produces disease, it must be actively prevented, this time the first thing is to remove the diseased plant and destroy, and at the same time spray the agent in time, you can use a variety of agents in rotation, do not only use a single agent, easy to produce resistance. According to different diseases, different agents should be selected for spraying.

As one of the essential vegetables on the table, chili peppers are in high demand every year. Therefore, peppers are planted in many areas, although peppers have a strong ability to adapt to the environment, but they will also encounter some pests and diseases in the process of planting, including pepper scabs, virus diseases and blight diseases. Each pest has its own unique control methods, which should be carried out differently for different situations, and the most important of them is to make a variety of medicines.

The most common and common disease of chili peppers throughout the growth period is scab disease. At the time of onset, the leaves of the pepper will appear green patches, and if not controlled, the area will gradually expand and turn brown. The control method is to rotate with non-Solanaceae vegetables when planting, and turn the soil deep to eliminate latent germs, and you can also use drugs to spray to kill germs.

Pepper charcoal maggot disease usually has water-stained lesions in the early stage, and in severe cases, black spots will appear, and when dry, it is especially easy to crack peppers. The control method is usually to select varieties with high disease resistance, and soaking the seeds in warm water before planting can effectively avoid pepper charcoal maggot disease to a certain extent. <>

There is also a very strange disease of chili pepper is chili cataplexy, when the chili pepper is sick, there will be lesions on the neck, and then it will turn yellow and dented, at this time, if you touch the leaves of the chili pepper with your hand, it will fall off on the ground. The prevention and control method is to choose a well-ventilated place for planting when planting, and must be pulled out in time for those who have become ill, and sprayed with drugs for prevention and control. In addition, peppers also have pepper bacterial leaf spot, which mainly damages the leaves of peppers.

When planting peppers, a high ridge planting method should be adopted to drain the stagnant water in time after rain, so that it can be effectively controlled. <>

Peppers, which are loved by many people, have so many pests and diseases in the process of planting. Therefore, in the process of planting, we must do a good job of protection in advance, and we must do a good job of cleaning up in time after the onset of the disease, so as to ensure the yield and quality of peppers.

Aphids will appear, and this pest will affect the yield of peppers very much, causing root rot in peppers, whiteflies, tea yellow mites, and tobacco worms, all of which can be seen when growing peppers. You can use pesticides to control it, or it can be controlled through proper management, pay attention to the requirements of control, and understand the planting skills when planting peppers.

Bladder wilt, pepper blight, powdery mildew, insect infestation, tobacco insects, these are the main insect problems. Usually, when planting, you must sprinkle some insect repellent and insecticides, and you should also pay attention to the disease prevention and control of peppers.

Aphids, cotton bollworms, taboos, cotton bollworms, tea yellow mites, Spodoptera litura,whitefly; Spraying pesticides, cleaning up bad leaves, spraying sprays, spraying chemicals, spraying insect repellents.

Spodoptera exigua, Spodoptera litura, fruit flies, whiteflies, peach aphids, thrips, these are relatively common pests that can be controlled by pesticides.

Chili pepper is a common vegetable on our table, but it also has many diseases.

So, what are the pests and diseases of pepper? What are the symptoms and control methods of pepper diseases and pests? Let's find out together.

What are the pests and diseases of pepper and symptoms 1, bacterial wilt There are many diseases of pepper, such as bacterial wilt is one of them, when the disease occurs, the top leaves of the plant will wither during the day, cloudy days and sooner or later will recover, 2-3 days later, the leaves are green, but the stem is dry and wilted, and pepper is most likely to produce this disease in a hot and humid environment.

2. Pepper blight pepper is also prone to pepper blight, when the disease occurs, the stem base of the plant is dark green water-soaked soft rot or cataplexy, and the leaves may also be infected, with round or nearly round, yellow-green edges, dark brown lesions, if the fruit is infected, it will rot and wither.

3. Powdery mildew is also a disease produced by peppers, when the disease occurs, small yellow spots will appear on the front of the pepper leaves, and then it will gradually spread into green-yellow mottled edges, and the back of the leaves will have powdery substances, and when it is serious, the leaves of the pepper will all turn yellow and fall off.

4. There are many insect pests of peppers, such as tobacco insects, whiteflies and tea yellow mites, etc., these pests will absorb the juice of peppers and eat the leaves, resulting in the leaves of peppers withering and falling off, thickening and twisting and other undesirable phenomena.

Pepper pest control method 1, agricultural measures to select disease-resistant varieties and 2 3 years have not been planted with Solanaceae crops; Deep ploughing of frozen soil before winter, ploughing and raking in spring, cleaning the field for weeds, hidden dangers of diseases and insects; Seed treatment, cultivation of strong seedlings, full application of well-rotted organic fertilizer, formula use of chemical fertilizer; Implement ridge formation, intercropping, plastic film mulching, reasonable dense planting, planting in large and small rows, cultivating and weeding, and harvesting at the appropriate time.

2. Chemical measures for virus diseases: early prevention of aphids, spraying 500 times of 20% virus A wettable powder or 1000 times of plant disease emulsion, or zinc sulfate plus potassium permanganate plus potassium dihydrogen phosphate plus urea, once every 7 10 days, and 2 3 times depending on the condition.

Anthrax: Spray 500 times of 50% mixed sulfur suspension or 600 800 times of 70% thiophanate-methyl wettable powder, or 1400 1500 times of 50% benmonyl wettable powder, or 80% anthrax Fumei wettable powder 800 times at the beginning of the disease, once for 7 10 days, 2 3 times in a row.

Blight: spray and irrigate the roots with 50% methyl copper wettable powder 800 times or 70% ethylphosphomanganese zinc wettable powder 500 times, or 600 800 times of Galik water agent, and sprinkle more than 96% copper sulfate 3 kg mu before watering in the high temperature rainy season, and then water.

Underground insects: When preparing the land, 90% trichlorfon crystals should be mixed with soil or fried corn grits, wheat bran and green cabbage leaves should be sprinkled on the surface to trap and kill.