Garlic is a vegetable with many pests and diseases, do you know what are the common pests and diseas

Blight, ash leaf blight, aphids, scale insects, garlic maggots, these are all very common diseases.

Diseases, leaf blight, bacterial soft rot, garlic sclerotinia sclerotinia disease, phytophthora root rot and blight are common diseases in the process of garlic planting.

The more common one is actually this rotten root disease, as well as this blight and this leaf blight, no matter which kind of disease, it will affect the growth and harvest of garlic, and will also directly affect this economic value.

What are the main pests and diseases of garlic? How to prevent it? Garlic is an overwintering crop, and the common diseases mainly include gray mold, leaf blight, purple spot and yellow spot of garlic sprouts. The main insect pests are aphids, root maggots, allium thrips, etc.

The main pest control measures are briefly introduced as follows:

1.Purple spot disease: spray 70% mancozeb wettable powder at the initial stage of the disease; or 75% chlorothalonil wettable powder 500 times liquid, or 64% alum wettable powder 400 500 times liquid. Once every 7 10 days, spray 2 times in a row.

2.Leaf blight: After the onset of the disease, spray 500 600 times of 50% tobuzin wettable powder, or 500 times of 75% chlorothalonil wettable powder, or 1000 times of 50% dry wettable powder for prevention and control. Spray once every 7 days, 2 3 times in a row.

3.Botrytis cinerea: After the central diseased plant is found in the field, it should be removed or treated in time with 1500 times of 50% Sukrin wettable powder, or 1000 times of 50% promethane wettable powder.

4.Root maggot (garlic maggot): After the occurrence of garlic field, inject 4000 times of pyrethrin solution or avermectin solution into the root soil; Adults can also be trapped, the proportion is 6 parts of sugar, 3 parts of vinegar, 1 part of liquor, 1 part of 90% trichlorfon powder, mix evenly in a pot, put it in the field, and wait for a sunny day to trap it.

5.Allium thrips: When found, it was sprayed with a mixture of 40% dimethoate emulsion and 80% dichlorvos emulsion 1500 times.

6.Aphids: pesticide control, imidacloprid, four seasons red, etc., pay attention to different pesticides to be sprayed in rotation. Physical control, use a yellow organic oil plate to trap aphids in the field, or use silver-gray plastic film to cut into strips of cloth about 20 cm wide, and put them in the garlic field to reject aphids.

The dosage and precautions of the medicine must be used with reference to the corresponding instructions.

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There are four main types of garlic diseases: fungal diseases, bacterial diseases, viruses and nematodes. Fungal diseases mainly include leaf blight, leaf spot, rust, gray mold, white rot, and sclerotinia sclerotinia. Bacterial diseases include bacterial soft rot, viral diseases such as garlic mosaic disease and garlic nematode disease caused by nematode infection.

Garlic insect pests mainly include garlic maggots, thrips, aphids, leaf miners, grubs and coffee bean elephants.

Introduction: In today's society, farmers pay more and more attention to the cultivation of crops, not only need to fertilize and apply pesticides, but also need to pay attention to watering. In order to maintain a good tasting taste of the crops.

Farmers need to take care of it, but it is normal for crops to have pests and diseases, because when growing, it is inevitable to encounter pests and diseases, as well as improper fertilization. SoGarlic planting pest control is very importantWhat are the common pests and diseases in garlic planting? Here, I hope to help you solve the problem.

Leaf blight is a fungal type of disease that is mainly present on diseased remains. Generally, it occurs in the case of heavy rain, and the disease is caused by excessive fertilizer application, and the diseased plant needs to be treated at this time. The fungus mainly infects the leaves and flower stalks of garlic, starting from the tip of the leaf and gradually spreading downward.

This change is manifested by the appearance of white round spots on the leaves, which will further expand after the merger. The anchor spreads all the leaves of the plant, and eventually causes the leaves and stems to turn yellow until they die and break off from the roots. If the garlic is diseased, the farmer should take protective measures in time to avoid affecting other plants.

Botrytis is also a fungal type of disease, which mainly harms garlic leaves, mostly occurs in the middle of the garlic growth period, and the lesions are water-stained and white in color. In the case of severe disease, it is not conducive to the normal harvest of garlic, and the appropriate pesticide is irrigated for garlic treatment. At the same time, farmers also need to go to the field often to observe the growth of garlic to avoid fungal diseases such as gray mold**, which is not only difficult to treat, but also affects other plants.

If such a situation occurs, it is advisable to be prompt**.

In order to prevent the occurrence of this type of disease, farmers need to apply pesticides during the growth of plants, because the disease mainly affects garlic through infection in the soil, and it is necessary to strengthen the management of the field and the rational use of the land. Timely drainage during rains is beneficial to the growth of crops.

Garlic leaf blight, garlic root rot, garlic rust, garlic thrips, garlic maggots, garlic spotted loon flies and so on. These are very harmful to garlic and can also reduce the yield of garlic.

Leaf blight, root rot, rust, thrips, garlic maggots, purple spot, gray mold, yellow spot, etc., should also learn more professional knowledge about the management of garlic.

Common ones are allium thrips, grubs, root maggots, leaf miner ropes, etc., so you can use some organic fertilizer at this time, and be sure to water it in time.

Prevention is the main way to prevent garlic rust. First of all, when garlic is planted, the soil needs to be disinfected, and soil disinfection can be combined with deep ploughing. It should be noted that for plots that have had previous outbreaks of garlic rust, the dosage of some killing drugs such as carbendazim can be appropriately increased when suddenly killed.

When sowing garlic, try to choose seeds with no lesions on the surface and a complete and smooth skin. Secondly, when planting in the field, especially in early spring, if there are continuous rainy days, it is necessary to use drugs in advance for prevention, control the concentration of preventive drugs, and avoid excessive drug concentration to cause pesticide damage to garlic. For overwintering garlic, special attention should be paid to watering in a timely manner after turning green, and at the same time the amount of watering should be controlled.

In particular, flood irrigation should not be carried out in the field.

1.Garlic leaf blight causes harm to garlic leaves and flower stalks, the leaf lesions are water-stained at the initial stage, the leaf color gradually decreases, and the leaf surface appears gray-white slightly concave round spots. The lesions enlarge and turn grayish-yellow to grayish-brown, with dense black-brown mold on the surface.

When the peduncle is severe, the growth of the plant is weak, and the dwarf yellow of the aboveground part shrinks or even dies early.

2.Garlic root rot is mainly harmful to rhizomes, and the storage period is harmful to bulbs. Cause the plant to be dwarfed and the leaves to turn yellow; The root system is yellow and rotten, the garlic head is small, and in severe cases, the whole plant dies.

3.Garlic rust is mainly harmful to leaves and false stems, the disease part is oval green spot at the beginning, and then a round or oval slightly convex summer spore pile appears under the epidermis, when the disease is severe, the disease spot causes the whole leaf to wither, and the plant dies in advance. Prevention and control methods:

In spring and autumn, especially in the event of continuous rain for 2 to 3 days, it is necessary to check for rust in time.

1. Epidemic, the color of the lesion area is white or yellow, showing water-soaked spots, the surrounding part is light green, and the humidity and temperature will accelerate the spread. As the temperature and humidity increase, the affected area extends to the entire leaf. 2. Rust, rust mostly occurs in continuous rainy weather, lesions generally occur on garlic leaves and false stems, at the beginning there will be brownish-green spot shape, slowly turn into round powdery rust spots.

Summary. Common garlic diseases and control methodsThe main diseases are garlic leaf blight, bacterial soft rot, garlic sclerotinia disease, Phytophthora root rot, blight, etc.

Common garlic diseases and control methodsThe main diseases are garlic leaf blight, bacterial soft rot, garlic sclerotinia disease, Phytophthora root rot, blight, etc.

Leaf blight is mainly harmful to garlic leaves, and the disease begins at the tip of the leaf or other parts of the leaf. At first, it is a small white dot with flowers, and then expands to an irregular or oval gray-white or gray-brown lesion, and black mold grows on it, and in severe cases, all the diseased leaves die, and many small black grains are scattered on it. When the damage is serious, the whole plant does not sprout.

Prevention and control methods: difenoconazole, benzobromide nitrile, tebuconazole and other first-class fungicides can be used in the early stage of the disease, and at the same time, they can be used together with protective agents such as dysenlian and pyraclostrobin to treat and prevent diseases at the same time.

After garlic is infected, it first occurs from the leaf margin or midrib, and forms yellowish-white stripes along the leaf margin or midrib, which can run through the entire leaf. When the humidity is high, the diseased part is yellow-brown and soft rot. Generally, the foot leaves first develop the disease, and then gradually expand to the upper leaves, causing the whole plant to wither or die.

At the onset of the disease, it can be sprayed and prevented by diazole, copper ammonia, and Bacillus subtilis.

At the onset of the disease, the leaves not only appear yellow stripes, but also twisted, cracked, and wrinkled; The leaf tips are dry and shriveled, the root system is poorly developed, and it is yellowish-brown in color. In general, garlic is relatively short and thin, and in severe cases, it will reduce the yield in a large area. Big summary!

In April, we must pay close attention to the prevention and control of the five major diseases of garlic! Generally, plots with poor management, insufficient fertilizer and water, and a high number of aphids are more likely to develop garlic virus disease. If there is a high temperature and drought during this period and there is no rain for a long time, it is likely that the virus disease will break out soon.

For garlic virus disease, Ningnanmycin, oligosaccharides, catenin and diffuser can be used for prevention and control. After harvesting, you must remember to clean up the diseased plants in time, and burn them intensively or bury them deeply.

When the disease occurs, the leaves turn green and yellow, become soft, and rot longitudinally along the veins starting from the tip of the leaf. The roots will rot and have a foul smell. The whole plant is short and grows slowly.

Garlic root rot usually occurs in a high temperature and humidity environment, and special attention should be paid to high temperatures. If the temperature is 25-30 degrees, coupled with the recent rainfall, it is easy to cause root rot. Once the disease environment is suitable, the spread of garlic root rot is very fast, and garlic growers must do a good job of prevention and control in time to avoid a significant decline in garlic yield in the later stage.

It is suitable for garlic root rot, methamethal-m, oxamycin, ningnanmycin, etc. It can be used with a diffuser to control it. Severely diseased plants and dead plants must be pulled out of the field in time to prevent the spread of the disease.

As the disease progresses, the lesions gradually spread to the lower part of the leaves, eventually causing a large number of leaves to dry up or rot. When the humidity is high, a white, gray, or dark brown layer of mold will also appear on the lesions. In severe cases, the entire plant will die.

Seriously affects the yield and quality of garlic. These diseases of garlic are seriously harmful to the leaves, and only one drug can effectively solve the causes of garlic tips There are many reasons for the dry tips of garlic, including physiological reasons and pathological reasons. Physiological reasons, mainly nutrient deficiencies, timely watering and topdressing, will soon be relieved.

The pathological causes are mainly caused by the following diseases: garlic root rot: garlic root rot is a disease that often occurs in the mother stage of garlic rot, which mainly harms the roots of garlic and causes root rot.

Due to the lack of water and nutrients, the above-ground leaves grow slowly, and the leaf tips dry outIn severe cases, it causes the entire leaf to dry out.

Garlic leaf blight is one of the most common diseases in the growing season of garlic, especially in spring, with low temperature, frequent rainfall and high humidity in the field, which mainly damages leaves and flower stalks. After leaf infection, white spots appear on the leaf first, mostly starting from the tip of the leaf. After enlargement, the lesion is irregularly shaped and grayish-white.

When wet, black mold appears on the lesions, turning from grayish-white to grayish-brown. The lesions spread from the tip of the leaf from top to bottom, and in severe cases, the whole leaf died. Garlic leaf blightGarlic wilt:

Garlic wilt is the most common disease in garlic production and can occur all year round. Mainly harms leaves. In the early stages of the disease, grayish-white to pale yellow patches are produced in the middle or tip of the leaves.

Under high humidity conditions, the spots spread rapidly, and soon half or the entire leaf wilts or rots, and sparse gray-white mold is produced on the spots.

There are many diseases of garlic, and the hazards of garlic are: garlic leaf blight, bacterial molluscemia, garlic sclerotinia disease, blight, mildew, etc. Therefore, garlic diseases should be distinguished as soon as possible and prevented and controlled correctly.

The main diseases of garlic are purple spot, leaf blight, rust, mosaic disease, bacterial soft rot, etc.

Prevention and control technology: 1) Selected garlic species: as far as possible, detoxified garlic, disease-resistant garlic, disease-free and robust garlic species, selected garlic species before sowing, and 2 bags per mu with Tianda 2116 dipping seed special type, mixed with kilograms of water, evenly sprayed with garlic seeds.

2) Rotation planting: It is necessary to choose loam or sandy loam land with flat terrain, convenient drainage and irrigation, rich soil organic matter, strong water and fertilizer retention ability to plant garlic, and avoid continuous cropping or heavy stubble with lily crops such as onion and garlic. Insist on alternating planting of garlic with wheat, corn and other gramineous crops to reduce the occurrence of diseases.

3) Clean the field: After the garlic is harvested, remove the diseased leaves, stems and other residues and films in the field in time, and turn the soil more than 25 cm deep to eliminate the residual bacteria in the soil. Before sowing garlic, it is necessary to turn the soil deeply, dry it for more than 15 days, reduce the number of soil residual pathogen groups, and increase the application of organic fertilizer, potassium fertilizer and micro fertilizer to improve the nutritional level of garlic, promote the health of seedlings, and improve disease resistance.

4) Mulching reduces soil moisture evaporation, increases ground temperature, reduces the number of irrigation and the chance of germ transmission.

5) Strengthen soil fertilizer and water management. During the growth period of garlic, pay attention to timely and timely irrigation, top dressing and cultivating loose soil to keep the soil moist, increase soil temperature, and maintain robust growth. And in the seedling stage, the motherhood stage, the garlic sprout elongation period and the bulb expansion stage, different types of Tianda 2116 should be sprayed in time to promote root development, improve the disease resistance of plants and the ability to adapt to various harsh environments.