Grape brushes dry what to do. Why do grape leaves dry? Stains on the leaves of grapes

Video: Diseases and pests of grapes. Fighting them. Grapes 2016

Disease and pest infestation in the vineyard often causes serious damage to the vine. If the leaves dry on the grapes, the shoots wither and die off, this becomes a heavy loss for the grower. It is twice as big a misfortune when the brushes suffer, the berries dry up and a significant part of the harvest is lost. Moreover, the drying process can begin both immediately after setting the berries, and already during their ripening, be accompanied by symptoms inherent in cultural diseases, and proceed for no apparent reason.

Video: Grape berry. Sunburn. Grapes 2015

Why do berries dry on grapes? There are many reasons for the loss of bunches. Most often, growers identify diseases caused by pathogenic fungi.

Downy mildew is in the first place in terms of harmfulness, affecting not only the ridges and clusters of grapes, but also the green mass, new and perennial shoots. The fungus, penetrating into the tissues of the plant, prevents the flow of food and moisture. Infected parts of the vines, including brushes and ripening berries, dry out and die.




- this is not the only problem that threatens the loss of the harvest. There are other diseases of grape berries, photos with the effect of which on the vine clearly prove the degree of danger and the need to combat them. Insect pests can cause serious damage to the crop, there is a risk of loss of berries and in case of insufficient vineyard care.

Dry-haired grapes

Called by the fungus Eutypa lata the disease of the vine is widespread in all wine-growing regions, where winters cannot be called mild, and is especially damaging in seasons with high rainfall.

Video: Grapes Sunburn on Berries

Since the pathogenic fungus is able to penetrate the tissues of not only grapes, but also many other horticultural and fruit crops, this complicates the fight against the manifestations of the disease and its spread. The disease affects not only shoots and berries, changes in the wood caused by the fungus are clearly visible in the photo of the grape disease. The disease especially strongly affects adult grape bushes, aged from 8 years, and the symptoms of dry-handedness become apparent when the plant at the beginning of summer gives an increase of 20-25 cm in length.

Shoots and leaves are stunted, oh, the size and color are different from healthy ones. The leaves dry on the grapes, and then necrosis affects the affected shoots. The set berries dry up or stop growing, and remain small until the end of the growing season.

Spotted anthracnose grape

One of the reasons why grapes dry out may be anthracnose. The peak of infection with this serious disease occurs during wet periods, and the pest is active not only in warm weather, but in the range of 2-30 ° C.

Manifestations of anthracnose are often mistaken for mechanical damage to berries and shoots caused by hail. But the weather has nothing to do with it.

Rounded necrotic spots with a brown-black border are the zones of penetration of harmful fungi. Such spots can merge, the dried-up affected tissues inside them are destroyed, and the young leaves drying on the grapes seem to be burnt.

To grow a vineyard on your plot is, perhaps, many gardeners dream about. But you will need to work hard, since this plant must be treated in a timely manner from various infections and pests. Nevertheless, brown spots on the bunches of grapes are not uncommon, even taking into account the timely replenishment. Why grape berries rot and dry, and how to prevent it - this is what you need to understand before starting your vineyard.

Main reasons

If dark spots appear on the grapes, then the key factor that caused this result is not always the same. For example, if your vineyard has been affected by infectious diseases, the pathogens may be fungi, viruses or pests. Much also depends on the characteristics of your care.

Frequent mistakes can become, if not the key cause of an illness, then at least contribute to it. We must not forget about the possible mechanical damage to the branches and foliage of the plant, as well as about the climatic conditions in your particular region. All this as a whole can cause the development of certain ailments. If dots or specks appear on the berries, it's time to figure out what exactly you are dealing with this time.

Infectious diseases

When pathogenic microorganisms get on the foliage or grapes, the disease begins to develop rapidly. Soon you will notice how small spots on the fruits increase in diameter, and the berries become lethargic, turn black and dry out. Interestingly, there can be several ways to infect shrubs. Spores are not necessarily transferred from a diseased plant to a healthy plant.

Sometimes fungi and other harmful microorganisms get on grapes with the help of animals, human clothing or water. If the green fruits of the grapes turn black, be sure to consider the most common ailments of an infectious nature:

  • mildew or downy mildew. These microorganisms can easily overwinter on plant debris, and with the onset of spring, their spores are carried by the wind. This disease primarily causes serious harm to the grapes. They soon begin to darken, and the foliage curls and can dry out;
  • anthracnose. With the development of this disease, absolutely all parts of the bush wither and dry out. Initially, the foliage and shoots of the plant are covered with brown spots with a dark border. If the stem of the bush has suffered from anthracnose, it is recommended to cut and burn all the affected areas as soon as possible. If this is not done, the plant will lose up to 70% of its foliage;
  • black spot. If the grapes turn black soon after the rain, it is obvious that this ailment was the cause. In the future, it will spread to foliage and shoots. You can correct the situation with Bordeaux liquid. Shrubs are sprayed with it.

Knowing what to do if dark spots appear on the grapes, and the leaves change color or dry out, you can save your plants from death.

Non-communicable diseases

Let's say the grapes began to turn black and dry. The cause is not always an infectious disease. Sometimes it turns out to be the mistakes you made in caring for the plants. For example, excessively bending the ridges of a shrub will help them dry out. The lack of moisture affects the grapes not in the best way. That is why watering the plant during the growing season is mandatory.

The unfavorable factors also include heavy soils. If yellowish spots appear on the leaves of the grapes, it is quite possible that this is non-infectious chlorosis. You will be able to eliminate the problem if you apply mineral fertilizers to the soil in a timely manner.

Grape cure

When the reasons for the drying up of the vineyards have been clearly identified by you, it's time to start treating the disease. The optimality of a particular method will depend on the disease itself. For example, if your shrubs have been infected with mildew, they must be uprooted and then burned without fail. Otherwise, the disease will spread to healthy grape bushes.

Let's say your vineyard has suffered from black spot. In this situation, it is much easier and cheaper to start prophylactic treatment of the plant in a timely manner. For this, special fungicides are used, with which the grapes are sprayed at least twice a season. So that black spot does not become your problem anymore, it is worth adhering to the key recommendation: unnecessary or damaged shoots of the plant are immediately removed, and the cut sites are treated with a special tool.

Anthracnose is difficult to get rid of, so prevention is the best solution for you.

It is recommended to spray the bushes twice during the growing season (before the beginning of the flowering phase and in the process of fruit ripening). Do not forget that the treatment will be effective if you apply medicine after rains. When it is time to harvest, it is better to postpone the spraying of the bushes. But if the problem has not been completely eliminated, it is recommended to continue treatment in the autumn period.

Prophylaxis

Blackened bunches of grapes are far from the most desirable result for any grower. However, if an infectious disease already affects the entire shrub, it is difficult to cure it. Therefore, experts, as a rule, recommend timely preventive treatment. For this, special preparations or Bordeaux liquid are used.

Monitor the condition of your vineyard from the beginning of the growing season. Examine the bunches and foliage of the plant regularly for blackheads, spots, or dried parts. If you devote enough time to this, then you will not need to look for ways to treat infectious or non-infectious ailments. Save the grapes from rot, and you can enjoy their taste.

Video "Diseases of grapes and the fight against them"

In this video, you will learn about grape diseases and how to treat them.

Disease and pest infestation in the vineyard often causes serious damage to the vine. If the leaves dry on the grapes, the shoots wither and die off, this becomes a heavy loss for the grower. It is twice as big a misfortune when the brushes suffer, the berries dry up and a significant part of the harvest is lost. Moreover, the drying process can begin both immediately after setting the berries, and already during their ripening, be accompanied by symptoms inherent in cultural diseases, and proceed for no apparent reason.

Why do berries dry on grapes? There are many reasons for the loss of bunches. Most often, growers identify diseases caused by pathogenic fungi.

Downy mildew is in the first place in terms of harmfulness, affecting not only the ridges and clusters of grapes, but also the green mass, new and perennial shoots. The fungus, penetrating into the tissues of the plant, prevents the flow of food and moisture. Infected parts of the vines, including brushes and ripening berries, dry out and die.

Mildew is not the only crop loss problem. There are other diseases of grape berries, photos with the effect of which on the vine clearly prove the degree of danger and the need to combat them. Insect pests can cause serious damage to the crop, there is a risk of loss of berries and in case of insufficient vineyard care.

Dry-haired grapes

Called by the fungus Eutypa lata the disease of the vine is widespread in all wine-growing regions, where winters cannot be called mild, and is especially damaging in seasons with high rainfall.

Since the pathogenic fungus is able to penetrate the tissues of not only grapes, but also many other horticultural and fruit crops, this complicates the fight against the manifestations of the disease and its spread. The disease affects not only shoots and berries, changes in the wood caused by the fungus are clearly visible in the photo of the grape disease. The disease especially strongly affects adult grape bushes, aged from 8 years, and the symptoms of dry-handedness become apparent when the plant at the beginning of summer gives an increase of 20-25 cm in length.

Shoots and leaves are stunted, oh, the size and color are different from healthy ones. The leaves dry on the grapes, and then necrosis affects the affected shoots. The set berries dry up or stop growing, and remain small until the end of the growing season.

Spotted anthracnose grape

One of the reasons why grapes dry out may be anthracnose. The peak of infection with this serious disease occurs during wet periods, and the pest is active not only in warm weather, but in the range of 2-30 ° C.

Manifestations of anthracnose are often mistaken for mechanical damage to berries and shoots caused by hail. But the weather has nothing to do with it.

Rounded necrotic spots with a brown-black border are the zones of penetration of harmful fungi. Such spots can merge, the dried-up affected tissues inside them are destroyed, and the young leaves drying on the grapes seem to be burnt.

The disease infects all aboveground green plant organs, including the brushes. The grape disease, in the photo, presents the greatest danger to berries before flowering, when the entire brush is affected, as well as before the harvest ripens. As the disease develops, spots characteristic of the disease form on the ovaries and ridges, after the growth of which the brush withers all or partly.

Verticillary wilting of the vine

Verticillosis, namely the causative agent of this disease, the pathogenic fungus Verticillium dahliae, penetrates the roots through the soil and, multiplying, disrupts the supply of moisture to the shoots and clusters of grapes. The disease of grape berries, as in the photo, more often and more strongly affects young plants, and its external manifestations can become visually noticeable only a year or two after infection.

The vineyard suffers the strongest damage when the bushes are under high stress. This is more often observed with a lack of moisture, elevated air temperature and the beginning of ripening of berries. First, leaves that look like burnt dry on the grapes, then it is the turn of shoots and bunches. The clusters located in the lower tiers of the affected shoots dry, individual berries on the grapes dry, mummify and remain in this form on the bunches.

Buffalo leafhoppers, which increasingly attack vineyards, can inflict no less harm than pathogenic fungi.

An insect that feeds on plant juices, on the shoots and ridges, makes characteristic ring-shaped lesions, up to a centimeter long, as a result of which the grapes, which are not receiving enough nutrition, dry up, the shoots wither and die off.

The pest gives one generation per season. In the stage, leafhoppers larvae live and feed on grassy plants under vine bushes, and then adult insects climb the vine and begin their harmful activity.

The spread of the pest is facilitated by the abundance of vegetation near the grape bushes. A measure of the fight against a dangerous insect is a two-fold treatment of plants with benzophosphate. Such spraying should be carried out in June, and, in addition, removing weeds and planting beds with onions and garlic near the vineyard, which repels leafhoppers, will be a good prevention.


Bending of the ridges during berry ripening

An explanation of why berries dry on grapes can be the ripening bunches themselves, under whose weight the bunches bend, the supply of moisture and nutrients is disturbed and the fruits wither.

The risk of loss of yield for this reason is greatest for varieties and hybrids that form heavy large clusters.

You can avoid breaking the ridges and shoots bearing brushes if you grow a bush based on an arch or a gazebo. The brushes hanging down are not constrained and develop well, and the branches experience an even load and do not bend.

Drying grape ridges

If no apparent reasons, for example, symptoms of diseases of grape berries, as in the photo, are identified, and the brushes are not poured, and the berries are mummified, perhaps we should talk about drying out of the ridges.

This phenomenon, first noticed a little more than a century ago, has not yet been sufficiently studied, it has only been found out that a kind of paralysis, leading to a slowdown or arrest of the development of bunches, is associated with metabolic disorders and is of a local nature. The disease is not infectious in nature, is not transmitted to other plants and may be associated with a violation of moisture penetration through the vessels of the ridge to ripening berries. Indeed, it is during dry periods that paralysis, leading to the drying out of grape berries, manifests itself most often.

Symptoms preceding drying, in the form of brown dark spots at the branches of the ridge, become noticeable during the ripening period, when the berries accumulate from 7 to 12% sugar.

The tissues under the spots are affected to the depth of several layers of cells, and the lack of moisture aggravates the picture and necrosis covers all new areas. If the spot on the ridge loops back, the flow of moisture to the brush located below stops, and the isolated grapes dry out, wrinkle and lose their taste and marketability.

Drying of grape ridges is dangerous not only with loss of yield, but also with the fact that mold and disease-causing fungi often settle on the affected areas, causing secondary infection of the culture.

A direct relationship between the frequency of drying of the ridges, the region of growth and the grape variety was not revealed. But empirically, it was possible to determine that self-rooted bushes are less likely to be affected by this disease of grape berries, as in the photo, than grafted plants, especially on vigorous rootstocks.

Treatment of paralyzed bushes with fungicides or other plant protection products is ineffective. In some cases, when the grapes dry out, spraying the plantings with a 0.75% solution of magnesium chloride or 3% magnesium sulfate helps. Prophylaxis begins about a month before the onset of the probable onset of paralysis, and then two more sprays are carried out with an interval of 10 days.

As an effective prevention, when the berries begin to take on color and gain juice, the bunches and the surrounding area are treated with a 5% solution of magnesium sulfate.

However, the main means of combating the drying out of grape ridges, gardeners consider adherence to the rules of agricultural technology. Only with proper shaping and pruning of the vine, using balanced fertilizing, including magnesium and a moderate amount of nitrogen, as well as with sufficient watering of the vineyard in combination with chemical treatment, can we talk about eliminating paralysis of the ridges and saving the crop.

When growing grapes at home, they are often faced with sudden wilting of bunches at different stages of berry development. In order to prevent the development of such a problem on the bushes, it is necessary to consider the main causes of the occurrence and possible ways to solve them.

Why do bunches of grapes wither and what to do at the same time?

There can be many reasons for the wilting of bunches of grapes, but most often there are five main ones that require detailed consideration for a timely decision to save the harvest.

Lack of moisture

Although grapes tolerate a lack of watering, sometimes excessive drought caused by a lack of rainfall can cause the clusters to dry out.
The plant, constantly experiencing a lack of moisture, reacts with a decrease in yield, a decrease in the density of berries, their wilting and drying out. The harvest during this period of time is under threat, since it is not possible to immediately notice the problem. Usually, on one bunch, all the grapes do not dry out, this happens gradually, grape after grape.

It is not necessary to water the grapes only if there is heavy rainfall at least 2 times a month. When the air temperature is stably high, and precipitation is absent or is a weak short-term rain, then watering is carried out independently.

Did you know? To make 1 liter of wine, you need about 600 grapes.

If the grapes begin to wilt from lack of moisture, they should be watered immediately. Watering is recommended with water at room temperature, under a bush, in the amount of 20-30 liters at a time. Watering is best done in the morning or evening, so that the moisture nourishes the roots well before the heat. As a rule, after such a procedure, the wilting process is suspended.

Sunburn

One of the most common reasons for the wilting of bunches is the influence of the sun on the plant. Summer scorching sun rays sometimes have a detrimental effect on some bunches that are not covered with leaves. The burn manifests itself in different ways: heavily burnt grapes acquire a brown hue, the taste and aroma resembles fermented berries, if the sunburn is light, then the berries wither slightly without changing color, but the taste is greatly spoiled.

To save the crop from sunburn, artificial shading is created. So that the grapes do not suffer from a lack of sunlight, it is necessary to shade the plant only at lunchtime, when the sun's rays are most scorching.

Harvest overload

If there are many brushes on the plant, they are removed in a timely manner, otherwise, during active growth and ripening, some bunches may not have enough nutrients for ripening, so the plant will independently regulate the amount of harvest, destroying most of the berries. The berries on an overloaded bush begin to wither and crumble sharply, without ever starting to ripen.

Usually, crop overload is possible on young bushes, when not yet sufficiently thick branches have formed on the plant and the root system is poorly developed, such problems are not observed in adult specimens. To avoid overloading, it is better to remove excess clusters yourself. On a young bush (up to 4 years old), only 5-6 formed clusters should be left, the rest should be removed.

Fungal diseases

Diseases of a fungal nature of origin that can cause drying of bunches of grapes include mildew and powdery mildew.

Mildew infects all grapevine bushes on the plantation in a short time. The disease can be identified by light yellow oily spots of small size on the leaves of the plant.
If you do not start to deal with the problem in time, the fungi will spread to the vines, brushes and berries. Mildew spores are activated in spring, when the air temperature warms up to + 10 ° C. The plant is damaged especially quickly in warm and humid weather.

Spots initially appear on green grapes and cause them to dry out. If the fungus develops on ripe grapes, the berries dry out and fall off. Mildew treatment must be carried out with a mixture of copper sulfate and lime liquid. The concentration of copper sulfate depends on the degree of development of the bush: before the buds open, it should be sprayed with a solution of 3%, the entire remaining period of time - with a 1% solution.

Did you know? The oldest vineyard is located in the city of Maribor, Slovenia, which is more than 400 years old.

The solution must be prepared as follows: dissolve 100 or 300 g of the product in 5 liters of boiling water. For lime mortar, quicklime (75 g) and water (10 l) are used. The two obtained funds should be mixed, filtered and sprayed on the bush, well irrigating the affected elements.

Spraying is carried out in calm, dry and warm weather. You can repeat the procedure 2-3 times with an interval of 10 days to achieve the maximum effect. Among the effective drugs in the fight against mildew are "Cuprozan" and "Cuproxat", which are used according to the instructions on the package.

Oidium infects the ground part of the plant, covering the crowns, leaves and berries with a white coating, which turns brown over time, so the disease is often confused with sunburn. Mass damage to berries occurs in high humidity and warm weather conditions.

At this time, the grapes may begin to wilt or burst sharply. Sulfur is used in the treatment of the plant, which gives a good result. To prepare the product, buy sulfur powder (100 g), which is mixed with 10 liters of water.

Suitable weather conditions for spraying are dry and warm, the air temperature is not less than + 20 ° С. Spraying is carried out every 10 days until the bushes are completely cured.

Important! With the resulting solution, the treatment is carried out only in the morning or in the evening, during the period of the lowest solar activity, since parts of the plant can be severely burned.

To cure a severely affected plant, drugs such as "Topaz" and "Fundazol" are used, according to the instructions on the package.

Pests

Sometimes, the cause of wilting and shedding of grapes from the bush is the defeat of the plant by pests. Common pests that cause a similar plant reaction include spider mites, underground phylloxera, and wasps.

The spider mite first infects the deciduous part of the plant, causing the leaves to curl, wilt, and dry out. Almost simultaneously, after rolling the leaves with their drying, the berries wither.

At this time, the damage to the bush is already strong enough and it will not be possible to save the crop, therefore, further measures are aimed at saving the plant from death. In order to prevent the death of the crop, the processing is carried out, having discovered the first signs of the vital activity of the spider mite - the appearance of a thin cobweb on different parts of the plant and tucking the ends of the leaf outward.

Underground phylloxera settles on the root system of the plant, sucking out the sap and nutrients of the plant. Outgrowths form on the damaged roots, which interferes with the normal development and nutrition of the plant. The growth of grapes stops, the shoots wither, the leaves fall, the berries wither and crumble. After the roots die off, the plant dries up completely.

It is very difficult to determine that the plant has affected phylloxera, since the insect lives at a depth of 0.5 m. The main danger of underground phylloxera is that it can spread to the roots of nearby bushes, and there are no drugs for treating the plant.

There are only means that allow you to destroy the phylloxer, along with the bush, therefore they are used immediately, as soon as they notice the defeat of at least one bush, so that the pest does not have time to infect the neighboring ones. For the extermination of the insect, volatile flammable carbon disulfide is used at a concentration of 300 cm³ / m².

Wasps are a common grape pest that damages berries. After breaking the integrity of the skins on grapes, they begin to wilt and dry, thereby reducing the quality and quantity of the harvest. Wasps do not eat the berry completely, but damaging one, they go to the other.
Mass damage to the crop by wasps is possible when a wasp nest is placed near a bush. The solution to the problem is aimed at destroying the wasp nest in the dark, when the wasp begins a dormant period. At this time, it is considered effective to spray the nest with toxic substances - "Dichlorvos", "Raptor", according to the instructions.

Important! The treatment of the nest with poison should be carried out in protective clothing, it is imperative that the face is covered with a net to protect it from massive bites, since the wasps will most likely try to protect the home from attack.

After 20 minutes, it is recommended to burn the nest. If the defeat of grapes by wasps occurs in the absence of a wasp nest near the bush, measures are taken to protect the berries by putting purchased bags on the bunches. Specialty cloth bags are available at shops that specialize in horticultural supplies.

Preventive measures

It is easier to prevent the grapes from drying out than to take measures to eliminate the problems that have arisen.

General preventive measures include:

  • disembarking at a suitable site(with good soil aeration) in compliance with planting recommendations;
  • landing resistant to common diseases and pests of varieties;
  • adherence to schedule preventive spraying against diseases and pests;
  • regular pruning excess shoots, removal of weak or damaged parts that reduce the immunity of the plant;
  • regular fertilization that allow you to saturate the plant with the necessary substances that stimulate the normal growth and development of all parts of the bush;
  • watering grapes during severe drought;
  • saving stepsons in the area where the brushes are located to protect the crop from the scorching sun;
  • timely harvest, destruction of plant debris fallen from the bush.

Thus, bunches of grapes can wilt for various reasons, which require careful study in order to make the right decision to eliminate them. To make it easier to resolve the situation that has arisen, you can use the helpful recommendations in the article.

When the vine is healthy and yields a good harvest, the heart rejoices, but it happens when the plants, for no reason at all, begin to dry out, starting with the leaves and ending with the fruits. Here comes confusion, because often, especially novice gardeners, have never encountered such problems, and do not know what to do in these cases, and it’s a pity to grapes - so much work was spent on growing it. So why do grape leaves dry? This question remains relevant for many winegrowers.

The grape leaf dries up for many reasons that gardeners need to learn to recognize in order to identify the problem that has befallen their beloved vineyard in time and begin to eliminate it in a timely manner. If time is lost, it may not be possible to heal the plants.

Grapes - leaves dry, what could be the reasons:

  • insufficient moisture;
  • all kinds of diseases and pests;
  • damage to the root system;
  • lack of trace elements in the soil;
  • wrong choice of variety;
  • violation of the conditions for growing crops;
  • fad.

Lack of moisture

Although grape plants prefer hot weather, moisture for them is a prerequisite for normal growth and fruiting. If you do not water the vineyard in a timely manner, then, first, the leaves of the grapes will begin to dry, then the fruits will wither, the root system will get sick. As a result, the entire plant may die. It is very easy to eliminate this cause - regularly and on time to water the plants in specially prepared irrigation grooves, and so that moisture does not stagnate, more often loosen the ground around the bush without touching the roots. If the space around the plants is mulched, then the liquid will not evaporate from the soil surface for a long time.

Fungal diseases and pests

Numerous diseases cause symptoms such as drying out of the leaves of the grape plant. The main ailment causing drying is chlorosis, which has several types.

Verticilliasis also causes grape leaves to dry out. The disease first affects the roots of the bushes, as a result of which the process of plant nutrition is disrupted. Because of this, mineral substances cease to flow into the plant itself and the leaves dry up, first at the edges, and then completely, later completely disappear. The scary thing is that this disease manifests itself only in the second or third year after infection.

With a disease of grapes with a spotted mosaic, first yellow streaks appear on the leaves, then spots, and in the end the leaves dry out and fall off.

Grapes, why do the leaves dry? The cause may be mildew and oidium, the most famous plagues of the grape culture. It is very sad that not only adult plants but also grape seedlings suffer from them.

Gray rot on grapes can also cause dry leaves. It spreads in humid and warm weather, affects, first the leaves, then the fruits, and then the whole plant as a whole.

A disease such as cercosporosis provokes drying of the leaves, which is dangerous not only for the leaves, but also for the berries. It appears on the underside of the leaves as an olive bloom, after the appearance of which the leaves begin to dry out and fall off.

Infectious rubella, which occurs in extreme heat, can cause changes in the leaf blade, which first changes color to red, then the structure of the leaves changes - they become thicker, at the same time, their fragility increases due to lack of potassium.

The main ailment causing drying is chlorosis.

Alternaria also manifests itself in hot and dry weather. Grape leaves begin to dry at the edges, as if there is a lack of potassium, then they become covered with yellow spots and, over time, fall off completely.

Escoriosis or black spot is accompanied by drying of leaves and shoots, the appearance of black spots on them, drying out and dying off of the brushes. The disease is very dangerous, as it affects the entire plant as a whole.

Pests

Vineyard raids by spider mites can cause the leaves to dry out. This pest is so small that it is very difficult to see it with the naked eye. A sign of plant damage by a pest is a cobweb formed at the junction of the leaf with the shoot. If the mite is noticed in time, it will still be possible to prevent the death of the plant.

Root damage

If the grape leaf dries, then the possible reason is damage to the root system, which can occur due to improper loosening of the soil, or unsuccessful shelter of the vine for the winter. Rodents can also damage the roots - mice, moles and arthropods.

Lack of micronutrients

The content of trace elements such as nitrogen, potassium and phosphorus in the soil is very important for the grape crop. A lack of them can cause problems, as a result of which the leaves of plants dry out. First of all, this concerns nitrogen. It is very simple to remedy the situation - abundant application of fertilizers containing nitrogen. The stores sell a huge number of different nitrogen-based fertilizers. One of the most popular is urea. You can use ammonium sulfate, ammonium nitrate, an aqueous solution of sodium nitrate for dressing. From organic matter, cow and horse manure, as well as chicken manure diluted with water, are perfect. The lack of potassium manifests itself as dry edges of the leaves, which, subsequently, completely dry out and fall off. In addition to nitrogen, it is also necessary to remember about feeding grapes and other microelements that plants need for good growth. It is important to ensure that there is no oversaturation with minerals, which is also extremely harmful to the grape culture.

Wrong choice of variety

If the region has a cold climate, and crop varieties are chosen that do not tolerate cold weather, then they are most vulnerable to the incidence of various diseases, as a result of which the leaves may dry out. The correct choice of grape variety will minimize the risk of morbidity and ensure the normal functioning of the grape plants.

Violation of growing conditions

Grapes, dried up leaves? A lack of sunlight and heat, a lack of moisture, and soil unsuitable for the crop variety can cause such symptoms. Plants should be planted in such places so that they are as comfortable as possible - there is enough light, mineral components. It is worth protecting the vine from frost, covering it for the winter, protecting it from cold winds. It is necessary to process grapes from diseases and pests in a timely manner, and carry out pruning of plants, monitor the condition of the soil under the grape bushes, and conduct watering and feeding on time.

Foul

Due to the fact that diseases can be transmitted from one plant to another, massive infections can occur. If it is not possible to heal a diseased grape bush, then it is better to destroy it in order to avoid disease of other plants.

What to do if grape leaves dry

It is necessary to inspect the vineyard more often for morbidity and pest infestation. By the appearance of plants, any disease can be detected at an early stage. If the leaves begin to dry, then the disease has gone too far.

For plants to function properly and be healthy, you need to provide them with decent care. In the summer, in the heat, abundant and regular watering is necessary. It is necessary to ensure that the water is absorbed exactly at the root, and does not flow away in different directions.

If there are signs of a lack of trace elements in the soil, then you should immediately apply the appropriate fertilizers containing the minerals necessary for the plants.

Timely treatment with preparations for fungal diseases will help prevent damage to the vineyard by such dangerous diseases as mildew and powdery mildew, and many others. Now there are many available drugs that will reliably protect your vineyard from various misfortunes. If the plant is already sick, and all its green parts have been damaged, then, in order to avoid contamination of the rest of the grape bushes, it is worth digging up and burning it, and replacing it with a new variety, resistant to diseases and pests. Many insecticides will help you against spider mites.

To avoid chlorosis, it is necessary to monitor the acidity of the soil, and timely apply the necessary fertilizers.