What are the pests and diseases of grapes? How can it be prevented?

White rot, anthracnose, brown spot and other diseases and pests are the most common pests and diseases of grapes, and the occurrence of pests and diseases should be prevented through various methods such as physical and chemical intervention and agricultural control.

Grapes are a highly profitable cash crop for growers, but they are prone to pests and diseases during their growth. Downy mildew, white rot, anthracnose and brown spot are the most susceptible to pests and diseases during growth, which can damage the leaves of the grapes and cause the fruit to rot and affect the quality and yield of the grapes. After discovering pests and diseases, it is necessary to use drugs in time**, but relevant prevention and control work should also be done in advance.

To prevent the occurrence of grape pests and diseases, we should do a good job in the inspection of seedlings, especially when introducing new grape varieties, the introduction of seedlings and cuttings and other propagation materials should be inspected as necessary, and materials with pathogens and pests should be found to be treated in a timely and effective manner to avoid it from being introduced into new planting areas and avoid causing a large area of pathogens and pest infections, so as to prevent and control the occurrence of a variety of pests and diseases, which is conducive to the normal growth of grapes.

Through a variety of biological methods such as insect treatment, fungus treatment, and insect treatment with bacteria, it is also possible to prevent and control the emergence of grape diseases and insect pests. The method of biological control is safe for grapes and humans and animals, does not pollute the environment, does not harm natural enemies, and is conducive to the long-term control of pests and diseases. At present, the biopesticides widely used in the market have a good disease prevention effect when applied to the root nodules after excision, which can prevent grapes from being infected by these pathogenic bacteria or reduce its incidence.

Through physical means can also achieve the control of grape pests and diseases, the use of fruit tree pathogenic pests to the temperature spectrum and sound and other specific response and tolerance ability to kill or distinguish harmful organisms, now the market advocates non-toxic seedlings, it is recommended to use heat treatment method to remove the virus, so that grape planting after the occurrence of few pests and diseases. Agricultural control is also an effective way to prevent the occurrence of pests and diseases in grapes, it is to keep the field clean, timely clean up the debris and diseased fruits that are harmed by pests and diseases, and concentrate on deep burial or consumption, reduce pathogens and prevent the spread of pathogens and pests.

For example, white rot, anthracnose, powdery mildew, brown spot, black pox, etc., must be burned in the prevention and control of fallen leaves or diseased branches, and then timely remediation, weeding, and fertilizer.

There will be scab, powdery mildew, rust, wilt and sheath blight. When we encounter this situation, we can solve this problem by turning the soil, spraying insecticides, spraying pesticides, spraying nutrient solution and watering plants.

Downy mildew, black pox, white rot, anthracnose, brown spot can choose chemical control, you can also choose physical control, you can use insects to treat insects, you can also spray some drugs.

Summary. Control of grape two-star leafhopper.

It is also known as floating dust, grape leafhopper, etc. It mainly injures the leaves by sucking leaf sap. The adult body is about a millimeter long, light yellow, and has two large round black spots on the small shield on the chest, hence the name.

2-3 generations occur per year, and adults overwinter under clods, in crevices in stones, in fallen leaves or weeds. Before the grape germination, it is a pest of weeds; After germination, sucking the juice on the back of the leaf, small white spots appear on the leaf, and in severe cases, the leaf is pale, and gradually withered, early fall, or curl the leaf to the opposite side. In addition, its excretion on leaves and fruits often causes mold blooms.

The first step in the control of this pest is to sweep the leaves and weeds and burn them to eliminate the overwintering adults; The second is to spray contact agent during the adult insect infestation, and it is best to spray the agent every morning and evening when the temperature is low and the adult fork is not very active.

What are the main pests of grapes and their control?

The prevention and control of grape two-star leafhopper is also known as floating dust, early age segment, grape leafhopper, etc. It mainly takes Lu Yu to suck leaf sap as the harmful leaf. The adult body is about a millimeter long, light yellow, and has two large round black spots on the small shield on the chest, hence the name.

2-3 generations occur per year, and adults overwinter under clods, in crevices in stones, in fallen leaves or weeds. Before the grape germination, it is a pest of weeds; After germination, sucking the juice on the back of the leaf, small white spots appear on the leaf, and in severe cases, the leaf is pale, and gradually withered, early fall, or curl the leaf to the opposite side. In addition, its excretion on leaves and fruits often causes mold blooms.

The first step in the control of this pest is to sweep the leaves and weeds and burn them to eliminate the overwintering adults; The second is to spray contact agent during the adult insect infestation, and it is best to spray the agent every morning and evening when the temperature is low and the adult fork is not very active.

The prevention and control of grape ten-star leaf cape is also known as goldenrod insect, grape leaf qing, etc. It mainly feeds on leaves. The adult is oval, yellowish-brown, with a body width and a length of about 12 mm, and there are 5 near-circular black spots of different sizes on each elytra, with a total of 10 wings, hence the name.

One generation occurs a year, overwintering in the soil at the base of the vine root stem with eggs. It hatches in mid to late May of the following year, and the larvae are mostly active in the morning and evening, causing damage to young leaf shoots; pupation in mid to late June; August is the peak season of feathering and harm. There are many holes in the damaged leaves, and in severe cases, the mesophyll is eaten up, leaving only some membranes and veins.

The larvae often concentrate on predation at the beginning of hatching, and then gradually disperse; Adults are mostly on the dorsal part of the leaves, and when touched, they will secrete a foul-smelling yellow liquid, or they will freeze their death on the ground. The control of this pest is first to form Zheng jujube after autumn, clean the soil, and eliminate overwintering eggs; The second is to make full use of its own weaknesses to hunt or kill, such as removing insect leaves during the concentrated damage period of larvae, vibrating and killing in the early morning of the adult stage, or spraying contact spike killers.

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1.Grape black pox.

It mainly harms the leaves, fruits, petioles, stems, cobs, tendrils and inflorescences of grapes, especially the young part is the most damaged, and it is susceptible to damage in the early stage of growth, and the disease is serious when it is rainy and wet in spring and summer.

2.Grape anthracnose.

This disease mainly harms the fruit, and the cob can also be damaged, which is a disease in the late stage of grape growth. Grapes are most affected when the berries are close to ripe in the late stage of berry coloring, so it is called late rot.

3.Grape white rot.

The disease mainly harms old and mature tissues, and is a disease that should occur in the late growth stage. The ears are the most affected, and sometimes the new shoots and leaves are also affected.

4.Grape downy mildew.

It mainly harms the leaves, but also harms the young and tender parts of new shoots, flower buds and young fruits, and the disease should be affected in the later stage of grape growth, which generally begins in June and July, and reaches the peak of disease in September.

5.Grape powdery mildew.

The pathogen mainly invades the green parts such as leaves, new shoots, and fruit ears, and the old and mature organs do not get sick. The leaves begin to produce pinkish-white ash on the surface, and when the disease is severe, the whole leaf is covered with white powder, which makes the leaves curl and wither and fall off.

6.Grape brown spot disease.

It is mainly affected in the middle and lower leaves, and the lesions are divided into large and small brown spots. 1. The lesions of large brown spot disease are round or amorphous, the middle of the lesions is brown or black-brown, and there is a yellow-green halo on the periphery, with a diameter of about 4-8 mm.

Every vegetable and fruit will have light or heavy insect infestations during the growth process, so it is important to learn to prevent them in advance to produce large fruits. How can we really control grape pests and diseases? In the process of grape growth, plant quarantine must be carried out, and the prevention and control of raw silver, physical, chemical and agricultural control must be carried out at the same time.

At the same time, in this process, we must not focus on prevention, we must do a good job in prevention and control measures before and after harvest, and we must not only pay attention to chemical control and ignore the prevention and control of agricultural measures. <>

In the process of introducing grapes, it is necessary to quarantine seedlings, cuttings and other propagation materials, and once they are found to contain viruses and pests, they must be treated and destroyed in time to avoid the spread of these pests to other areas. The process of biological control includes three aspects, and the biological control is very safe for the fruit trees themselves and the builders, and will not pollute the environment, and will not harm all kinds of beneficial organisms. When using physical control, it is mainly through various ways to avoid and kill harmful organisms, and heat treatment is usually used as an effective method to detoxify non-toxic seedlings.

At present, the most important means of agricultural control is chemical control, that is, the use of quantitative pesticides to kill pests and diseases. Of course, this is also an indispensable part of the whole comprehensive prevention and control. Although its effect is fast and very good, it is very convenient, but it also has certain disadvantages, that is, it will pollute the environment, and it will also leave some poison on the seedlings and so on.

In addition, it is necessary to keep the field clean for a long time, clean up the residual branches and leaves that may appear in the pests and diseases in time, and destroy the diseased fruits in a centralized manner, so as to reduce the generation of pathogens. <>

Throughout the viticulture, the use of organic fertilizers and chemical nitrogen fertilizers should be minimized, which will also ensure that the vines can grow more robustly, and at the same time, the damage caused by grape pests and diseases can be reduced by improving ventilation and light transmission conditions.

First of all, when planting, we must choose the soil is more fertile and broad land, and we must use farmhouse fertilizer when fertilizing the old, do not use the fertilizer bought outside, but also often water the plants, but also to prevent the occurrence of pests and diseases, and also often observe the growth of grapes.

It can be used to turn the soil, spray insecticides, spray pesticides, spray nutrient solution and frequent watering to prevent and treat grape diseases and pests. When we spray the Sendan god insect agent, we must pay attention to the quantity problem, do not spray too many times, and also often observe the growth of grapes, if there are pests and diseases, we must spray the powder in time.

It can be prevented from the aspects of plant nuclear rock quarantine, biological control, physical control, chemical jujube prevention and control, agricultural control, and disease resistance breeding. In the process of control, it is necessary to choose the appropriate method according to grape diseases and pests.

Common diseases of grapes are anthracnose, white rot, downy mildew, completely remove diseased branches, diseased ears and diseased leaves, buried deep or burned, in order to reduce the source of bacteria, timely topping, pruning, drainage and weeding, increase the application of phosphorus and potassium fertilizer, it is strictly forbidden to apply nitrogen fertilizer before flowering of the plant, spraying should begin at the beginning of the disease, if it is found that there is a gall mite harm, you can use avermectin EC, tetradizime suspension.

Common diseases in viticulture.

1. Grape anthracnose rubber chain:Generally, the disease begins to occur in June in summer, and the disease is at its peak in July and August, and the disease becomes more and more aggravated when it matures at the ripening time, and during the large number of ripening fruits in August, the disease enters the peak period of the disease during the sultry thunderstorm.

2. Grape white rot:White rot often occurs in the high temperature and rainy season, and the peak period after the rain, in the north, from June to the fruit harvest, it can affect the growth of the fruit, and the disease occurs after the storm, and the disease occurs after the storm, and the disease is easy to occur if the drainage is poor, the ventilation is not smooth, the weeds are overgrown, and the nitrogen fertilizer is applied partially.

3. Grape downy mildew:In the low temperature and rainy season, the disease is easy to occur, the orchard is not well ventilated, the field is waterlogged, and the partial application of nitrogen fertilizer is conducive to the development of the disease, the disease will generally occur in June in the north, and the peak period is August and September, and in the south of the Yangtze River, it is mainly in the rainy season and mid to late August.

The main pest of cultivated grapes.

There are many pests on grapes, there are two ways of pesting and sucking, chewing pests were serious in the past, but at present, stinging and sucking pests are serious and frequent.

Grape pest control.

1. Disease prevention and controlCompletely remove diseased branches, diseased ears and diseased leaves, bury or burn deeply, in order to reduce the source of Liang Kuisun fungus, timely topping, pruning, drainage and weeding, increase the application of phosphorus and potassium fertilizer, it is strictly forbidden to apply nitrogen fertilizer before flowering, increase the application of phosphorus and potassium fertilizer, and spray should be started at the beginning of the disease, with the best control effect of Bordeaux liquid.

2. Pest control:Before the germination of grapes, use 3 to 5 Baumé stone sulfur mixture, which can kill the gall mites lurking in the buds, and in the case of gall mite damage, you can use avermectin EC, tetramitezine suspension, etc., if the gall mites are very serious, you can spray pyridoxin EC, pyridoxamine wettable powder, thiobenone EC and other agents.

<> grape is a very popular fruit that is cultivated in various places and has a wide variety of varieties. What are the common pests and diseases in the growth of grapes?

Common diseases and insect pests of grapes include downy mildew, powdery mildew, black pox disease, two-star leaf chan, anthracnose, rot disease, spot disease, black rot, vine cutting disease, grain blight, scarab, thrips, ten-star ladyboard leaf beetle, spotted wax cicada, green blind bug, grape joint-missing gall mite, grape tiger longhorn talk about the source, etc.