The main diseases of black and red currants. Features of autumn currant processing

04.04.2019 Boilers

Redcurrant is a very resistant shrub to heat and cold, drought and waterlogging. Diseases of red currant, this is its weak point. And if you do not pay due attention to the plant, it will disappear.

Viral diseases of red currant

Like all fruit trees and shrubs, red currants are susceptible to diseases, viral and fungal. There are several viral diseases that pose the greatest danger to the bush.

Reversion or terry. More often they are affected by blackcurrant bushes, but the disease is transmitted by a kidney tick or garden tools from a diseased plant.

This disease can develop for several years on the same plant. And the longer you ignore it, the more neighboring fruit and berry crops will be infected. In the process of incubation, the virus modifies the plant beyond recognition. Consequences - complete infertility of the shrub.

You can identify the virus by the following features:

  • During flowering, the flowers do not smell at all;
  • Petals of inflorescences change color to greenish-cyanotic. Take on unnaturally elongated shapes;
  • The petals become "terry", the inflorescences stop growing, the berries do not have time to start, as the flowers crumble.

There is no chance of salvation for a sick bush. The infected plant must be disposed of from the site and burned. After such a red currant disease, currant bushes cannot be planted in this place for several more years.

- a deadly disease of the currant bush. You can find it by modifying the leaves of the berry. Along all the veins on the leaf plate, a pattern looms, which becomes brighter. Such an ailment leads to infertility and death of the shrub. The plant also needs to be removed from the garden and burned.

Fungal diseases of red currant

Flycatcher or anthracosis- most dangerous for red currant bushes. White and black have a greater resistance to disease. Often summer residents wonder what it could be, red spots on the leaves. It's red on the berry gall aphid. It is possible to determine the infection of red currant with anthracosis by the presence of red spots on the leaves.

At the beginning of infection, almost imperceptible brown dots appear. After that, convex red spots form on the currant leaves. They grow in size very quickly, disfiguring and deforming sheet plate.

Anthracose red currant

The leaves of the red currant, with red spots formed on them, wither and fall off ahead of time. The fruiting of the bush is sharply reduced.

- a very unpleasant disease of the berry. First of all, the lower part of the leaf plate is affected. Red growths form on it, resembling the shape of a glass.

The spores of the fungus mature in these growths. Spore maturation occurs throughout the summer, and by autumn the fungus is carried by winds to neighboring plants. If there is a thicket of sedge near the site, it is necessary to get rid of it as soon as possible. It is from this plant that rust enters the garden.

Sferoteka or powdery mildew- familiar to almost all gardeners, the disease is fruit berry plants. It affects not only the leaf plate, branches and berries, including. It is determined by such features. At first, the leaf is covered with a white bloom (as if sprinkled with flour). Further, this plaque changes color and turns into dark spots.

The plant slows down significantly in growth. Leaves curl and fall off. The berries do not ripen, they also crumble. Infected red currants, if left untreated, may not survive the winter. And if it survives until spring, then with spring warmth, powdery mildew will finally eat the surviving bush and begin to move to neighboring shrubs.

Septoria- the formation of white spots on the leaves. The disease infects redcurrant bushes extremely rarely. It can be identified by the presence of dark brown spots on the leaves. The spots increase over time and acquire a light, almost white hue. The border of the light spot remains brown.

Disease Control Methods

Measures to combat red leaves on red currants are as follows. Every ten days, the currant bush should be sprayed with fungicidal solutions. It can be copper sulfate or. Colloidal sulfur or Phthalan. It is very important to process the entire bush completely, because anthracosis affects both leaves and shoots to the very root.

For preventive purposes, even before the bud breaks, the bush and the soil around the root are treated with Nitrafen or copper sulphate. After the bush has faded, it must be sprayed three times, with an interval of two weeks. Bordeaux liquid is used for processing. Gardeners recommend processing red currants with Titan, Agrolekar, Title 390.

We must not forget about timely pruning autumn and spring. Also in autumn, the root earth must be loosened, all fallen leaves are removed. After all, it is in them that spores of the fungus hibernate.

Garden tools must be disinfected before work. Rinse it in a cool solution of potassium permanganate or pour boiling water over it.

You can fight goblet rust with agrochemicals - Agrolekar, PropiPlus, Chistoflor and Forecast. Or use the proven years folk remedies.

Agrodoctor helps to fight goblet rust

You need to prepare two containers. In one of them, crush and insist a glass of garlic in two liters of water. In the second glass of tobacco, but only in three liters of liquid. Place containers with garlic and tobacco for a couple of days in dark place for insistence.

After, when the water is saturated with aroma, mix everything and pour into a bucket. To them add half a pack of black ground pepper, 100 gr. liquid soap (so that the solution adheres well to the plant). Infuse for another three hours, and strain.

Such a burning mixture should be sprayed on the shrub before it begins to bloom. What has been strained (garlic and tobacco) should not be thrown away. It should be scattered under the red currant. Immediately after flowering, spray the bush with a decoction of onion husks.

To get rid of the sphere library, you need the usual baking soda(50 grams) dissolved in ten liters. water. Spray the bush with this mixture. You can dilute cow dung in water, three parts of liquid for 1 part of mullein. Allow to ferment for three days and dilute again in this ratio. Treat the bush with this slurry every week until complete recovery. Three percent solution iron sulphate suitable for processing a bush, every 10 days.

Purchased drugs for the treatment of sferoteka - Bactofit and Topaz. Thiovit Jet, Alirin-B and Fitosporin-M.

Septoria should be dealt with in the same way as with anthracosis. And the prevention of the disease is the same. Fungicides for processing - Chistoflor, Forecast, Workshop. As soon as the buds begin to bloom, the red currants are sprayed with copper sulphate, in a ratio of 10 liters. water 40 gr., and Bordeaux mixture.

Red currant pests

In addition to red currant diseases, plants are damaged by insects. The most common of them are leaf and shoot aphids, and gooseberry moths. kidney moth and golden currant. Pale-legged sawfly and spider mite. You can read more about currant pests.

Currant borer larvae hide in branches for the winter, so it will help to identify and remove them.

With ticks and aphids, you need to fight with the help of Karbofos and Fitover. He does not like pungent odors, so gardeners spray the bushes with a decoction of tobacco or wormwood.

So that the plant does not become infected with anything, it is necessary to carry out regular and timely prevention.

Throughout the summer season, it is necessary to inspect the plants in the garden in order to detect warning signs in time. Both black and red currants, whose diseases and pests can destroy the entire crop, require your attention and care.

Black currants (as well as red, white, pink) are subject to the same adversities as gooseberries, so pest and disease control for both crops is essentially the same.

What is sick currant?

The plant is able to "signal" that it needs your help, so most diseases can be guessed by changing the appearance of the bush.

Currant resistant to diseases and pests

To "insure" and protect plants from most diseases, purchase blackcurrant varieties that are resistant to diseases and pests:

  • Zoya;
  • Minsk;
  • Kipian;
  • Binar;
  • Katyusha;
  • Seaside champion;
  • Goliath;
  • Klussonovskaya;
  • Kupalinka;
  • Memory of Vavilov;
  • Titania;
  • Ceres;
  • Temptation and etc.

Sferotek (American powdery mildew)

The causative agent is fungi of the genus Spheroteca (Sphaerotheca). The first signs of currant infection with a sphere library are already noticeable in May: the leaves, stems of the bush, and subsequently the fruits are covered with a white coating (later the color turns brown). Then the berries shrink and lose their sweetness, diseased bushes do not have time to grow and die. contribute to the development of the disease high humidity air, dry, nitrogen-saturated soil.

Control measures

The affected parts of the plant must be immediately cut and burned, and the bushes themselves should be treated with a fungicide (Fundazol, Topaz, etc.). For the prevention of the sphere library in the fall, it is necessary to remove fallen leaves, thin out the bushes. Dusting with wood ash is also effective.

Septoria (white spot)

The causative agent is a fungus of the genus Septoria. As with other fungal diseases, most suitable conditions for the development of white spotting - high humidity, low light, dense plantings. Currant leaves appear brown spots(2-3 mm in diameter), which brighten in the center by mid-summer, and turn brown at the edges.

Control measures

Infected leaves and shoots must be removed, then treated with 1% Bordeaux liquid. For prevention, it is necessary to carry out annual pruning of bushes, dig aisles, and in the fall remove fallen leaves from the site.

Anthracnose

Another common fungal disease familiar to many gardeners. The first signs are small reddish spots (1 mm in diameter) on currant leaves, which later begin to darken, swell and expand.

Control measures

In early spring, treatment with 1% Bordeaux liquid will help (repeat after harvesting). Since the fungus overwinters in fallen leaves, in the fall it must be carefully raked out from under the bushes and burned.

Rust

Currants are attacked by 2 types of this disease: goblet (yellow-orange "warts" form on the underside of the leaf) and columnar (reddish small spots on the leaves are characteristic). After some time, the berries and foliage of the diseased bush fall off.

Control measures

When the leaves are just starting to bloom, the bushes are treated with a 1% solution. Bordeaux liquid(or other fungicides), then repeat the treatment during bud formation. The final spraying is carried out after flowering.

Reversion (terry)

A viral disease from which the plant cannot be cured. Signs of terry currant: changes appearance leaves - they lengthen and become pointed, later barren flowers of irregular shape grow.

Control measures

Sick bushes will have to be removed from the site; partial pruning of heavily affected shoots will not help. To prevent the emergence of this virus, carefully consider the choice of planting material. Since the terry virus is carried by insects ( kidney mite, aphids), treat the garden with pesticides in a timely manner.

striped mosaic

If the currant leaves began to turn yellow ahead of time, most likely a virus has appeared in the garden that causes a striped, or veined, mosaic. A characteristic feature - yellowness - spreads along the veins of the leaf, forming a mosaic pattern.

Control measures

Unfortunately, it is impossible to cure a currant affected by a striped mosaic, so diseased bushes must be dug up and burned, and the area where the virus has spread must be disinfected with a 1% solution of potassium permanganate.

Currant pests

Carriers of many diseases are insects, therefore, to protect the garden, it is necessary to carry out timely processing of currants from diseases and pests in spring and autumn. In this fight, all means are good, so we recommend using both natural and chemical preparations, most importantly, do not forget about precautions - work in protective clothing.

To make it convenient to figure out how to spray currants from diseases and pests, we suggest using our table:

Scheme of processing currants from diseases and pests
Time Procedure
Early spring, just after the snow melts
  • removal of fallen leaves, loosening of the soil between the rows and around the bushes;
  • dousing bush and soil hot water with potassium permanganate (for 1 bush 5 l of solution) (against aphids);
  • spraying with a 3% solution blue vitriol(300 g per 10 liters of water) or urea;
  • spraying with a 3% solution of copper sulfate, a 5% solution of iron sulfate, infusion of ash (100 g per 1 liter of water, leave for 3 days, strain, add 3 liters of water) (against)
Bud swelling period
  • sanitary pruning of bushes, careful cutting of stumps, burning of dry branches and leaves;
  • mulching the soil under the bushes with peat chips (layer 6 cm);
  • spraying with an 8-10% solution of lime (against kidney moth)
Before flowering bushes (budding period)
  • spraying with 3% Bordeaux liquid;
  • treatment with Novaktion (5 ml per 10 liters of water);
  • spraying with colloidal sulfur (100 g per 10 l of water) or garlic infusion (100 g of minced garlic per 10 l of water) (against kidney mite);
  • treatment with Iskra-M, Aktara, Insector, Kinmiks, Inta-Vir and others (against aphids);
  • spraying with Inta-C-M, Lepidocid, Fufanon-Nova, Bitoxibacillin (against moths)
At the end of flowering
  • spraying with Iskra (1 tablet per 10 liters of water);
  • loosening the soil around the bushes (against kidney moth)
After flowering
  • spraying with 1% Bordeaux liquid;
  • spraying with Karbofos (75 g per 10 l of water), per bush - 1-1.5 l of solution;
  • spraying with colloidal sulfur, Aliot or garlic infusion (100 g minced garlic per 10 liters of water) (against kidney mite)
After picking berries
  • spraying with a 1% solution of Bordeaux mixture
Late fall
  • cleaning and burning leaves;
  • loosening the soil around the bushes.

kidney moth

A small butterfly (wingspan 17 mm) yellow-brown. "Specializes" in red and white currants, black attacks less often. After wintering under the bark and at the base of the bush, the caterpillar comes out "to the light" and eats the contents of the currant buds. After flowering, the caterpillar becomes a butterfly and lays its eggs in berries, where the larvae continue to develop.

Control measures

For prevention, it is necessary to remove shoots with lagging bark “under the stump”, rake out fallen leaves from under the bushes and burn it away from the garden. During the swelling of the kidneys, the bushes can be treated with Iskra-M.

currant aphid

Curled leaves with reddish swollen spots and twisted young shoots are signs that the plant has been attacked by aphids. Colonies of this insect are easy to detect on the underside of the leaf, as well as on shoots where the pest hibernates.

Control measures

To destroy aphid eggs, the bushes are abundantly watered with hot water (before bud break) or treated with an insecticide (Fufanon, Decis, Aktara, Insector, Iskra, Inta-Ts-M, Inta-Vir, Kinmiks, etc.).

Ognevka

During flowering moth butterflies lay their eggs in currant inflorescences. Then the caterpillars begin to eat berries and leaves, braiding them with cobwebs. Each caterpillar is capable of destroying 10-15 berries.

Control measures

Before and after flowering, currant bushes are treated with insecticide solutions (Spark, Fufanon-Nova, Bitoxibacillin). For prevention, before flowering, the ground under the bush is mulched with peat or compost, and in late autumn the soil under the currant is loosened, the bushes are spudded.

kidney mite

If in the spring on a currant bush too large swollen buds are found, similar to small cabbage "heads", most likely a kidney mite lives in them. When the larva becomes crowded in the kidney, it goes into another, and thus damaging a large number of currant buds. The tick can carry the terry virus.

Control measures

In early May, during budding, "suspicious" buds must be plucked out. Before flowering, when ticks are most vulnerable, the bushes are sprayed with an insecticide (Tanrek, Fufanon-Nova, Decis, etc.).

Glassware

Spring treatment of currants from pests and diseases, for example, pruning, helps to identify damage to the bush with a glass case. The caterpillars of this pest live in currant shoots and leave wormholes behind. They feed inside shoots, making moves, because of which the branches stop growing, dry out and die.

Control measures

Every 2 weeks it is necessary to inspect the bushes and cut off (to the white core) the drying shoots in which the caterpillars settled. You can treat currants from a glass case with the same preparations as in the fight against a tick or kidney moth.

Protecting currants from pests and diseases is not too difficult and every gardener can do it. The main thing is to follow the basic agrotechnical rules, providing plants with timely care.

Spring for gardeners begins with a thorough inspection of the property. The primary task is to identify frozen parts of trees and shrubs, diseases and pests. Immediately after this follows active struggle With possible problems. Today on the site for you will learn how currant processing in spring from diseases and pests.

Gardener's work plan in spring:

1. Treatment with boiling water.
2. Spraying currants from diseases and pests.
3. Caring for currants in spring: tillage, pruning, fertilizer.

Pouring bush with boiling water in early spring

Not all gardeners consider this method to be truly effective. However, it has shown its effectiveness in many cases, especially in the fight against aphids. If last year you had to fight with the mentioned pest, do not pass by this common way to protect currants from the enemy.

When to process? It needs to be done in early spring without waiting for the snow to melt. You should not be afraid - boiling water will not bring any harm to the bush. But only on condition that the kidneys are still in a dormant state.


It is necessary to treat currants from pests with boiling water in early spring

Stages of work:

Tie up the bushes so that the shoots are more closely spaced.
Boil a large amount of water.
Pour a currant bush through a watering can.

The first treatment of the garden from pests and diseases

Pathogens and larvae of many insects calmly endure even the most severe frosts. If you do not protect the plant in time, you can completely lose the entire crop. To protect fruit crops, including valuable currants, experts advise treating the entire garden in early spring, before signs of diseases or pest settlements appear.


For the first treatment of currants in the spring, preparations "Skor" and "Karbofos" are suitable

Of the many ways to protect currants, there is one particularly effective one. Gardeners who use it wait for the first spring warmth and go to the garden, taking with them a remedy for garden diseases. "Skor" and a popular remedy for pests of fruit crops Karbofos

How many approaches does the primary processing of currants require? Option two:
One if last year the culture was not sick or was moderately affected.
Two (with a break of two weeks), if the currant was severely affected by diseases or pest attacks last year.
Primary processing is designed to protect currants from common problems: mites, aphids, powdery mildew. Then proceed to other activities to care for the garden.

Currant care after the first spraying

Before you start pickling currant bushes with chemical or folk remedies, you must perform the following steps:

1. Cut off all frostbitten, dry and obviously diseased branches or parts of them.
2. Loosen the ground near each currant bush, sprinkling with ash.
3. Dig deep between bushes.
4. Pour humus at the base of the bushes to ensure culture nutrients for the whole season.
5. Treat currants from diseases and pests.

To fight with different kind microorganisms, fungi and insects are directed to all of the above steps spring care. Getting rid of diseased branches, loosening, digging and fertilizing the earth, as well as direct spraying of bushes - all this helps the currant to strengthen itself in the fight against enemies.

Proper care for currants in early spring will contribute to a good resistance to pests and diseases

Inspection of currant bushes and re-treatment with drugs

When the first leaves appear on the currant and flower buds begin to swell, the time will come for an inspection. The unusual shape of the kidneys, swelling and spots on the leaves - all this is alarm signal for the gardener. It is necessary to immediately determine whether this is a sign of a disease or the introduction of insatiable pests into the plant's life system.


It is very important to carefully examine the currant bushes in the spring

Important! Inspection and processing of currants must be carried out before bud break. From the moment of flowering until late autumn, it is impossible to spray the bushes.

Treatment upon detection of the main pest - kidney mites

If, during a spring inspection of currants, you find swollen buds, most likely the main enemy of the culture, the bud mite, has settled in them. If measures are not taken in time, the affected buds will not bloom, as a result, the currant yield will suffer greatly not only in this, but also in subsequent years.


Mite in currant buds is easy to detect in early spring

What to do against this currant pest? best method treatment is considered spring solution colloidal sulfur(10 g/10 l) or a drug developed on its basis "Thiovit Jet". Some gardeners use "Chlorophos", Karbofos or "Furanon". Of course, spraying will not help to greatly increase this year's crop, but next spring the problem will be completely or partially solved.

Processing bushes from powdery mildew disease in spring

A sign of powdery mildew on currants in spring is a light gray bloom on the leaves. In addition, the shoots are deformed, the leaves become smaller and change the color and shape. Spores of an insidious fungus that causes crop loss overwinter on the plant or fallen leaves.


Powdery mildew disease on currants

How to save currants from this disease? Experienced gardeners trust in this case proven blue vitriol and drug Fundazol. The first is taken 100 g per bucket, and the second 15 ml. Be sure to water the ground around the bushes with the prepared solution at the same time as processing the plant in the spring.

Aphids on currants - pest control methods

The presence of aphids on currants can be determined by twisted shoots and leaves. If you look closely, reverse side leaflets you can find these small, but very vicious pests. Experienced gardeners know that ants are the main carriers of aphid larvae. They breed these pests, as they feed on their secretions. If there are aphids on the currant, you will see a lot of ants on it.


Currant pests - aphids

How to deal with these pests? For this case, many drugs are intended. Can be processed "Karbofos" if spraying in early spring did not help. This is one of the most popular drugs. Many gardeners are faithful to the old proven remedy - blue vitriol(100 g/10 l) or prepared on its basis Bordeaux mixture. There are other drugs: "Intavir", "Tanrek". Before the leaves appear, apply treatment "Furanon" or scald the bush with boiling water.

Processing currant bushes in spring with anthracnose

Many gardeners, unfortunately, are well acquainted with this disease. It is characterized by the formation of brown swellings on the leaves. In early spring, the disease is not detected so easily, which can lead to a delayed response. In view of this, it is especially important to carefully examine each twig and leaf on the bush.


Anthracnose disease on currants requires urgent treatment

What will help to cope with anthracnose in the spring? Great for fungal infections "Intavir". In the midst of spring, gardeners apply processing ash. Will also help inkstone or Bordeaux mixture. Processing is carried out in the evening - twice with a break of half an hour.

On the garden plot currant bushes from the moment buds open to the ripening of lacquer-scarlet clusters are threatened by hosts of pests and pathogens. Sometimes you wonder how much effort it takes to grow a healthy crop without loss. We have to choose: either consistently and persistently fight insect pests and pathogens, or immediately buy seedlings of disease-resistant varieties.

Treatment and prevention of red currant diseases

The gooseberry family, which includes red currants, has a lot in common, including diseases. Plants are most commonly affected by fungi viral infections. And to the question of treatment experienced gardeners recommend a strategic approach: treat not individual affected, but all other bushes on the site.

It is important for the gardener to recognize the signs of the disease in the initial stage, before it spreads.

Diseases cultivated plants probably exist for as long as the orchards themselves, or even longer, because even wild berry growers get sick.

Anthracosis

Caused by a fungus that causes plants to lose their leaves. In especially wet years, the disease can spread to all plantings.

A large number of dotted dark spots appear on the surface of the greenery, which grow to tubercles 2.5 mm in size. The lowest, shaded leaves are affected first. As the disease progresses, the tubercles rupture and the spores of the fungus come out. They are spread by rain and wind. Arthropods also play a significant role in pathogen transmission.

Ulcers form on the affected parts, the berries fall off. Red currants are defenseless against the causative agent of anthracosis. Even if there are only a few lesions, bushes can completely lose their leaf cover.

Even a few outbreaks of anthracosis can cause redcurrant leaf loss.

Plants affected by anthracosis lose their immunity, their frost resistance decreases. High risk of crop loss. There are no varieties immune to anthracosis. Relatively immune

  • Victoria,
  • dutch red,
  • Faya fertile,
  • Chulkovskaya,
  • Generous.

Treatment and prevention measures:

  1. A careful selection of seedlings is carried out.
  2. Before planting, the plants are immersed for 5 minutes in a 1% solution of copper sulfate, then washed with water.
  3. They are planted only in places where currants have not previously grown, avoiding proximity to trees and low-lying areas that contribute to the preservation and spread of the fungus.
  4. Remove and destroy fallen leaves.
  5. Digging up the ground under the bushes.
  6. In late autumn and spring, before the buds swell, the plants and the soil under them are sprayed with 1% solutions of copper preparations.
  7. In summer, currant plantings are treated at least 3–4 times with 1% Bordeaux liquid, first before budding, then immediately after flowering, then after 10 days. The last treatment is carried out after harvest.

Some guidelines advise the use of Nitrafen. But it is poorly decomposed, very toxic and accumulates in the soil. Now it is forbidden to use it in personal subsidiary plots.

When spraying plants, make sure that therapeutic and prophylactic solutions irrigate the bush abundantly, especially carefully treat the underside of the leaves.

Reversion (terry)

Some authors believe that the causative agent of reversion is a virus; according to other sources, the disease has a mycoplasmal nature. Blackcurrant is most susceptible to doubleness, red currant is affected sporadically. The disease is transmitted through infected planting material or through a kidney tick.

Reversion changes the appearance of the plant. From the five-lobed leaves become three-lobed, teeth appear along the edge, the venation coarsens. They shrink and lose their intense color. Terry appears most clearly on the flowers. Instead, purple scales form. There is a transformation of the whole plant. A large number of deformed shoots appear, the number of leaves increases.

Terryness leads to the rebirth of currant flowers

Sometimes the bush looks asymmetrical: the part affected by terry is thickened due to excessive foliage, and the other has a normal appearance.

Increased humidity aggravates the damage. In dry years, the disease may subside, only to reappear in rainy periods.

Given that the currant mite contributes to the spread of terry, it should be detected as early as possible and the affected plants should be carefully treated with a 1% solution of colloidal sulfur.

Good result give early treatments of bushes in the spring with a hot shower from a watering can and spraying with freshly prepared garlic infusion: 50–100 g of crushed garlic are poured with water (10 l), stirred and irrigated plants. The procedures are carried out after the currant has faded, and repeated after a week.

goblet rust

Most often, the disease affects currant bushes growing near wetlands. It is caused by a fungus that requires sedge at an intermediate stage of development. Yield losses of red currant due to goblet rust reach up to 70%. Rainy weather and dampness worsen the situation.

Neighborhood with sedge contributes to the spread of goblet rust on currants

On the underside of young leaves at the end of May, bright orange growths with small depressions appear. With the further spread of the disease, the damaged leaves and ovary fall off. The spores are carried to the sedge, and the next phase of the development of the fungus takes place on it. In early spring, they again find themselves on currants, and the cycle repeats.

The spread of goblet rust leads to the loss of a significant part of the crop

To eliminate the risk of infection of bushes, it is necessary to destroy the surrounding sedge and not plant gooseberry family plants in wetlands.

Currants are recommended to be treated during periods of greatest susceptibility to the fungus - from May 1 to June 15. To do this, the bushes are sprayed three times with a 1% solution of Bordeaux mixture. The first treatment is carried out in early May, and subsequent ones at intervals of 10-12 days. When using a 3% solution of Bordeaux liquid, spraying can be single.

The most resistant varieties of red currant to goblet rust:

  • gonduin,
  • Victoria,
  • Faya fertile,
  • Chulkovskaya.

columnar rust

A fungal disease that most affects currant plantings located near coniferous trees, intermediate hosts of the columnar rust pathogen.

It appears in the form yellow spots on the upper side of the leaves, from below they are covered with a fluffy red bloom like a pile. The disease flares up and spreads in damp, warm weather.

Columnar rust inhibits shoot growth and leads to early leaf fall, which weakens the bushes and reduces future yield.

Prevention measures are the same as for anthracosis. To combat the disease, fertilizing with preparations containing copper sulfate and zinc is used. Superphosphate and potassium nitrate have a beneficial effect during the swelling of the kidneys. ammonium nitrate giving is not recommended.

Currant variety Chulkovskaya shows relative resistance to columnar rust.

Columnar rust is caused by spores of pathogenic fungi.

Septoria (white spot)

The disease has a fungal nature, characterized by the appearance of small red-brown spots on the leaves. In the future, the lesions increase in size, take a rounded shape. Spots, brown on the periphery, have a white center. The disease is accompanied by complete fall of foliage. Infected shoots stop growing or grow weakly. The kidneys near the lesions dry out.

The first manifestations of the disease are noticeable from the end of May or the beginning of June. The manifestation falls on the second half of the summer. The loss of foliage adversely affects the adaptability of bushes for wintering, suppresses plants and reduces future yield.

White spot affects red currants relatively rarely - gooseberries and black currants are more likely to suffer. On the territory of Russia there are no varieties resistant to septoria.

Measures to combat the disease are the same as for anthracosis. This is the use of fungicides, you can also use a 3% solution of iron sulfate and carry out agrotechnical measures.

The resistance of plants to white spot increases significantly when mineral additives containing boron, manganese, and copper are introduced into the soil.

Currant septoria leads to leaf fall and suppresses plant immunity

Sferotek (American powdery mildew)

A disease of a fungal nature, common among all members of the gooseberry family, although red currant among them is the most resistant to powdery mildew. Predominantly young shoots, buds, leaves of plants suffer. At the beginning of the disease, the affected areas are covered with a white coating, which later turns brown. The leaves are deformed, the berries fall off. The immunity of plants is suppressed, by the onset of winter they are weakened. If the disease is running, the bushes may die.

Protective measures against the sphere library include the whole range of measures used for anthracosis. They also practice preventive spraying with a 3–5% solution of ferrous sulfate after autumn leaf fall and early spring before bud break to eradicate fungi. To this end, the bushes themselves and the soil under them are carefully cultivated.

Three sprayings with a 1% solution of colloidal sulfur are used, which begin before flowering, then repeat twice with a break of 10–12 days.

Many summer residents prefer folk ways fight against powdery mildew, using infusions of manure and water, mixed in a ratio of 1: 3. The solution is left for three days, after which it is decanted, diluted in a threefold volume and the bushes are plentifully irrigated.

Natural antagonists of fungi multiplied in the infusion bacteria - when spraying cover the plant, destroying the plaque. For the procedure, cloudy weather is chosen so that the sun does not dry the bush ahead of time and the treatment is effective.

The currant variety Faya fertile is most resistant to powdery mildew.

Sferothek affects more often young leaves

For the treatment and prevention of the spread of fungal diseases of berries, microbiological systemic fungicide Phytosporin, the principle of action of which is based on the suppression of pathogenic fungi and bacteria by the waste products of spore cultures that make up the drug.

However, the best treatment is prevention. To maintain plant immunity and prevent major currant diseases, you need:

  • Observe the norms of agricultural technology, maintaining the necessary distance between plantings for their best ventilation, growth and nutrition.
  • Provide illumination of plants due to a well-thought-out landing site and crown formation.
  • Pruning in time, getting rid of weak and damaged shoots, avoiding excessive thickening of the bushes.
  • Maintain the required level of plant nutrition by applying organic and mineral fertilizers.
  • Constantly weed out weeds, preventing the reproduction of pest larvae and fungal spores, while improving the nutrition of the roots.
  • Remove and destroy fallen leaves to prevent the spread of disease.
  • Systematically loosen the soil around the bushes. At the same time, soil larvae and pupae die, and plant roots receive more air.
  • Water the currants regularly and mulch the trunk circle.
  • Do not plant bushes in the shade of trees and in low-lying areas.
  • Preventively treat berry crops with fungicides and drugs that enhance plant immunity.
  • In time, replace old degenerated bushes with more resistant new varieties.

For prudent owners who are responsible for the choice of seedlings, they take care of the plants, increase their resistance to diseases, the bushes, as a rule, suffer less often, and the crop is stable and of high quality.

Red currant pest control

Gall aphid, weevil, currant narrow-bodied goldfish, spider mite, gooseberry sawfly, bud mite, glass box, currant gall midge, moth - this is far from full list insects that threaten planting berries.

It is necessary to use drugs in strict accordance with the instructions, observing protective measures.

Red currant pests - table

ViewSigns of defeatMethods of treatmentPrevention
Gall aphid (red gall aphid)Causes damage to young crown leaves. Blisters of a reddish-brown color, galls, appear on them. Their spread leads to the suppression of the growth of new shoots and the death of foliage.If deformed leaves are found, they are removed and destroyed. The bush is treated with insecticides or safer biological aphids:
  • Agravertin,
  • Biotlin,
  • Fitoverm.

Biotlin is also successfully used against Rosaceae aphids: flowering plants, cherries, cherries, plums. During the season, several treatments of plantings can be carried out with a break of 2 weeks, stopping spraying 10-12 days before harvesting.

Some plants contribute to the reproduction and spread of aphids. It is not necessary to plant lavender, mint, monarda and others from the family of lamb near currants and gooseberries, as they are a food environment for aphids when the currant leaves coarsen. Flying from plant to plant, gall aphids persist on the site and infect gooseberry crops.
Weevil
(gray bud weevil)
Not very picky in food, found on almost all berry bushes, stone fruit trees, pear and apple. It feeds on buds, young leaves and buds, significantly reducing the yield.Effective drugs against weevil:
  • Aktara,
  • Calypso,
  • Mospilan.
It is believed that tobacco dust and coniferous infusions repel bugs.
Zlatka currantA small beetle with a brilliant greenish-golden color. The larva of the borer makes moves in the core of the shoots. Affected stems dry out and die. Adult beetles emerge in June and feed on leaves. They lay their eggs on the bark of young shoots, and the hatched larvae gnaw through them and remain to winter. In summer, in warm weather, the flight of the beetle begins, and the cycle repeats.To combat the goldfish, regular sanitary pruning of shoots to healthy tissue is carried out not only in spring and autumn, but throughout the summer. During the mass departure of beetles, spraying with a 0.3% solution of karbofos is effective.-
spider miteIt mainly affects red currant bushes. It feeds on young leaves and berries. It is usually located on the underside of the leaf blade. Yellow and red spots appear on its surface. Small mites gradually entangle the leaves and bunches of currants with their cobwebs. Berries lose their presentation, their taste deteriorates.To fight spider mite using acaricides. The most common means:
  • BI-58,
  • Rogor-S,
  • Fufanon.

They are toxic, it is required to apply in sunny time with observance of protective measures.
It is noticed that watering the bushes with a jet of water has a beneficial effect on plants. Some of the ticks are washed off and, having lost access to food, die. It is recommended to manually collect the affected leaves and clusters.

Periodically pollinate the bushes with odorous products. Some gardeners plant nearby plants that repel ticks: tansy, chamomile, calendula.
Sawfly
gooseberry or currant
Sawfly larvae can eat through the entire leaf blade to the veins, this leads to a weakening of the bush and crushing of the berries.Control measures are reduced to checking the condition of the leaves. If holes are found on them, and in the later stages of leaves eaten to the veins, all diseased parts of the plants are removed and destroyed. From chemicals effective Aktellik.Frequent loosening of the soil, autumn digging and sheltering the space under the bushes with dense material or a high layer of mulch significantly reduces the number of pests.
It threatens representatives of the entire gooseberry family. Unnaturally enlarged rounded buds speak of the defeat of the plant. Of these, normal shoots and leaves will not develop, and a crop will not form. Instead, many mites spread, which weaken the plant and can lead to the death of the bush. They are carriers of pathogens of reversion.Ways to fight:
  • Identification and destruction of deformed kidneys.
  • The use of acaricides, since insecticides do not work on ticks. These are preparations: Nissoran and Envidor. Two treatments are carried out with an interval of 10 days, starting before the flowering of the currant, when the tick comes out of the kidney.
  • After harvesting, stronger, respectively, more toxic drugs are used: Accent, BI-58, Phosphamide.
The source of infection is often poor quality planting material and undisinfected tools after gardening.
GlasswareIf, during spring pruning of currants, a black dot was found on a branch in the region of the core, this glass case has chosen your bushes. Its larvae gnaw through passages in plants. Affected bushes cannot eat normally, weaken and risk dying.It is necessary to cut the shoot to healthy areas or completely if the damage is severe. All collected garbage after trimming is immediately burned. The mass flight of an adult glass case coincides in time with the flight of the borer, therefore, when spraying with a 0.3% emulsion of karbofos, both the borer and the glass case will be destroyed.-
Leaf, shoot and flower gall midgesThe larvae damage young currant tissues. After the invasion, ugly leaves remain, the stems cover ulcers and cracks, damaged buds are deformed, flowers fall off.To combat gall midge, the condition of the bushes is systematically checked. If signs of damage are found, the affected buds, buds, leaves are immediately removed, shoots are cut off and all collected plant residues are burned. In order to make it difficult for adults to fly, the root zone is dug up, mulched with peat or humus. Spraying of bushes with 0.3% karbofos is used before flowering, if necessary, after picking berries, the treatment is repeated.-
Currant mothThe flight begins at a time when buds form on the currant. She lays her eggs in them. The hatched larvae eat through the flowers, then crawl onto neighboring ovaries. So they, gluttonous and numerous, are able to destroy the entire crop.With a significant damage to the moth, the bushes are sprayed with insecticides such as Aktellik or Iskra. A good result is given by Fitoverm treatments against larvae.In addition to the fight against the use of insecticides and biological products, agrotechnical methods are used, based on knowledge of the development cycle of moths. Since the larvae pupate and in this state remain on the surface of the soil or shallow in the ground, they remove weeds around the plants and periodically loosen the soil around them. If you mulch the soil nonwoven fabric after loosening or simply spudding the plants to a height of up to ten centimeters, the flight of butterflies will be difficult. After the flowering of the currant, the bushes are unraveled, as the danger has passed.

Red currant pests - photo gallery

Variety Victoria is characterized by winter hardiness and high yield.

Faya fertile is an American mid-season variety. Winter hardiness is average. berries small size with thin delicate skin. Brush 6–10 cm long. The variety is relatively resistant to anthracosis, goblet rust, sferoteka;

Chulkovskaya - a variety of folk selection. Widespread throughout the area Russian Federation. Early ripe. Self fertile. Ripening is friendly. The berries are medium or small in size. Taste is normal. Transportability is good. Shows resistance to fungal diseases, but is affected by terry. Winter hardiness is average, flowers may suffer from spring return frosts. Drought tolerant.

On the territory of Russia, the varieties Chulkovskaya and Faya fertile are grown everywhere.