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Effective measures to combat gooseberry powdery mildew. How to deal with gooseberry powdery mildew

American powdery mildew, which infects gooseberry bushes, is a fungal disease.

It is capable of causing significant harm to this berry crop, as it affects all the main parts of the plant:

  • Fruit;
  • Leaves;
  • Young shoots.

Signs of powdery mildew on gooseberries

The main signs of the disease are quite simple to determine. On these parts, foci initially appear with a white, as if floured bloom. This is nothing more than a mycelium with spores, which in dry windy weather are carried not only by air masses, but also by insects, thereby infecting neighboring bushes. During the life of the fungus, the plaque present on the gooseberry coarsens, thickens and acquires a dark brown hue, reminiscent of felt. The diseased plant begins to weaken and die.

The appearance of powdery mildew is observed on gooseberries, usually after their flowering. During this period, the bush actively gives an increase in young shoots and forms the ovaries of its fruits. Traditionally, the disease spreads from the lower tiers of the plant, affecting young, tender shoots and berries. This spread is due to the conditions inside the bush itself, suitable for germination of pathogenic spores. It is the lower tiers that are closest to the ground, where the source of infection, located on last year's leaves and berries, winters successfully. After which the disease spreads higher and higher.

During the summer period, powdery mildew on the gooseberry has time to attack the shrub twice. The first defeat occurs in spring at the time of active growth of green shoots and the formation of ovaries. The second - with the onset of the second wave of growth of young shoots, when the harvest has already been harvested.

Mycelium feeds on the ill-fated powdery mildew through the young cover layers of the gooseberry. Exactly this vulnerability plants. This is what explains such a selectivity of the disease. Indeed, during this period of development, young shoots, ovaries and leaves do not have time to get rough. Interestingly, infection can appear on young leaf blades at 10 days of age. On berries, the fungus can successfully develop within 50 days from the moment of their formation and growth.

Reasons for the spread of powdery mildew on gooseberries

The mycelium of powdery mildew infecting gooseberry bushes loves high humidity and warm weather. So the optimal temperature range for the growth of mycelium is the range from 17 ° C to 28 ° C. The air humidity must be> 90%. When the ambient temperature rises to 30 ° C, the infection stops its development. And at 32 ° C and air humidity less than 30%, the mycelium begins to dry out and die off.

Interestingly, in different years Powdery mildew spreads on gooseberries in different ways. This is associated with certain weather conditions. So, for example, sharp outbreaks of plant diseases occur in years with favorable conditions for the fungus. In just a few days, a maximum of a week, all young growths and ovaries are affected. In years with hot and dry weather, disputes are in no hurry to germinate, and therefore summer residents manage to collect a good harvest of berries untouched by the infection.

In addition, the spread of American powdery mildew is influenced by such factors as:

  • Agrotechnics for growing gooseberries;
  • Shrub planting site;
  • Distance between plants;
  • And other factors.

It is known for certain that plants located in the lowlands of the garden plot are affected faster and more strongly than in higher places. There, the soil breathes poorly. There, fog constantly gathers at the surface, water stagnates. And these are the most favorable conditions for the development of mycelium.

In addition to this, outbreaks of the disease on fruit plants and their severe course can be provoked by the summer residents themselves. Excessive watering and the use of dark materials (peat, non-woven geotextiles, etc.) as mulch can be the very reason for the defeat of gooseberries by powdery mildew. From such agrotechnical methods, the humidity and air temperature of the shrub increases, which contributes to the active spread of the disease.

Another reason for the spread of the disease is insects, both leaf-eating and sucking. These include the gooseberry moth, the yellow gooseberry sawfly. Dried and eaten leaves on the shoots contribute to the active appearance of a young growth vulnerable to powdery mildew. By the way the appearance a large number young shoots can be provoked by excessive thinning and inept pruning of the bushes.

Prevention and control of powdery mildew on gooseberries

And now, dear readers, we have come to the most important thing of our article - to the fight and preventive measures against American powdery mildew on gooseberry bushes. Taken together, this is a series of protective measures that must be strictly followed if you want to see healthy shrubs and collect good harvests... These include the following:

  • Agrotechnical measures;
  • Usage chemicals;
  • Using natural remedies;
  • Preventive measures.

All agrotechnical measures are aimed at increasing the overall resistance of plants. And the main task for the gardener is to create favorable conditions for the early maturation of integumentary tissues. What do we have to do:

  • Try to plant shrubs in sunny and ventilated places;
  • Control the density of the plant crown;
  • Do not carry out heavy pruning;
  • Timely and competent feeding.

Excess nitrogen in the soil will promote strong and growth of young shoots. But the introduction of potash and phosphorus fertilizers will contribute to the rapid maturation of tissues. Which, undoubtedly, will have the best effect on the general resistance of gooseberries to powdery mildew.

The use of chemical control agents is aimed at destroying spores and mycelium. Autumn time and in spring, it is best to spray gooseberries with a solution of copper sulfate at the rate of 200 grams of the drug per 10 liter bucket of water.

Spray the soil under the bushes with a 7% carbamide solution in order to quickly decompose the fallen leaves and other plant residues.

In addition, in the fight against powdery mildew that has appeared on gooseberries, it is recommended to use drugs such as:

  • Topaz - dissolve one 2 ml ampoule per 10 liters of water;
  • Bordeaux mixture -100 grams per 10 liter bucket of water;
  • An aqueous solution of soda ash with laundry soap - 40 grams of soap and 50 grams of soda ash per 10 liters of water.

Natural remedies will also be equally effective in the fight against American powdery mildew.

As such means, infusions of rotted hay, mullein or hay dust are used.

Such infusions allow the cultivation of special bacteria that feed exclusively on powdery mildew. Prepare them as follows. For 1 kilogram of raw materials, take 3 liters of water. Insist all this for 3-4 days, filter and dilute the resulting extract with 10 liters of water. Spraying shrubs is best done in the evening after sunset. Carrying out such an event in the morning or afternoon hours will not give any effect, since beneficial bacteria they die in sunlight.

Besides, experienced summer residents in the struggle for the preservation of plants and fruits, a soap-ash solution is used, which is sprayed on the bushes. It is prepared at the rate of 400 grams wood ash and 50 grams of chopped laundry soap on a bucket of water.

And of course Special attention you need to pay preventive measures to combat gooseberry powdery mildew. It is very important here to remove and destroy damaged fruits and infected shoots in time. Digging up the soil near the trunks is very important.

Spraying of plants has proven to be a very effective prophylactic agent. in early spring hot (45 ... 50 ° C) water. A short-term exposure to high temperatures will not be able to cause any harm to the plant, but it is quite capable of destroying the mycelium of powdery mildew.

And remember. Only the timely implementation of all measures will allow you to get rid of the extremely harmful fungus.

Powdery mildew gooseberry: pathogen mushroom - Sphaerotheca mors-uvae Berk. Et Curt.

Class: Ascomycetes - Ascomycetes

Harmfulness of gooseberry powdery mildew pathogen

This disease is widespread. All aboveground organs of the plant, leaves, inflorescences, shoots, mostly young, berries are affected. The disease begins to manifest itself immediately after the leaves bloom and progresses throughout the growing season.

Symptoms of gooseberry powdery mildew

Starting in spring, the infected plant organs begin to become whitish. mealy bloom which is very easy to wash. Young affected leaves usually curl up, and the resulting ovary crumbles, the berries affected by the disease wrinkle and dry out quickly. Shoots become deformed, twisted, their growth slows down and eventually they die off. In summer, the bloom covering the berries and shoots takes on the appearance of a brownish film.

Biology of gooseberry powdery mildew

Mass infection of gooseberry bushes occurs precisely at the stage of conidial sporulation, the development of which takes a long time, forming many generations.

The marsupial stage in the development of the pathogen begins in summer period, the plaque becomes denser and becomes brownish in color. This brown bloom consists of mycelium and fruiting bodies. The mushroom hibernates on infected gooseberry shoots and berries.

Ascospores, in fruit bodies, ripen only in spring, after overwintering.

The release of ascospores from the fruit bodies and infection of the plant occurs in the spring in the first warm days and coincides in time with the opening of the leaves and the opening of the gooseberry buds.

The causative agent of the disease infects only young plant tissues: ten-day-old leaves, young shoots and recently formed berries. 12-15 days after infection, the first symptoms of the disease appear on the gooseberry bushes. The disease develops especially violently in thickened plantings deprived of care at a temperature of 20-30 o C.

Gooseberry powdery mildew photo



Control measures for gooseberry powdery mildew

Powdery mildew causes enormous damage to gooseberry plantations. With a very strong infection with powdery mildew, the yield decreases to significant indicators from 20 to 50%, the growth of the bush falls and young shoots die. As a result of the vigorous activity of the pathogen, the complete death of the bush may occur within two to three years.

Agrotechnical control measures

  • prevention of thickening of landings;
  • thinning thickened plantations;
  • destruction of weeds throughout the summer;
  • digging up the soil under the bushes;
  • making forfor-potash fertilizers;
  • avoid excessive application of nitrogen fertilizers;
  • it is necessary to grow healthy bushes.

Chemical control measures

Spraying of bushes is carried out either in the fall after the leaves have fallen, or in early spring (the consumption of the working fluid is 1500-2000 l / ha).

  • Topaz 100, c.e.- 0.3-0.4 l / ha, spraying is carried out during the growing season, the frequency rate is 4 times;
  • Horus 75, century- 0.5-0.7 l / ha - 3 spraying should be done during the growing season.

A gray-white bloom that appears on gooseberry berries is a sign of infection of the plant with a dangerous fungal viral infection - powdery mildew. An uninvited "guest" came to us from America. The disease is spreading rapidly throughout the culture. White color over time it becomes gray and even takes on a brown tint. Adaptation to harsh winters contributes to the vitality of viruses. They endure our frosts on damaged bushes, so that with the onset of spring, they will multiply again with spores that already fall on nearby growing plants. When you find the first signs of powdery mildew, you need to know what to do with fruit crops, what control measures to apply.

Dangerous fungus

The fact that the gooseberry berry is useful, a storehouse of vitamin "C" is known not only to humans. Powdery mildew also "knows" about it. Microscopic spores of the fungus are carried by the wind, along with birds and insects. They settle on bushes of raspberries, yoshta, currants. In the last decade of May, according to the characteristic white bloom- the initial stage of infection - the pest is detected on the green shoots. These are myceliums. Given the rapid reproduction, the fight against powdery mildew on gooseberries begins immediately after the onset of the first symptoms, until the fruits are formed.

Spring warm days with rains create comfortable conditions for the reproduction of spores. If the bush has been infected since last year, the spores were not destroyed and overwintered safely, then in the spring, most often, the spread of powdery mildew begins from the lower branches. Covered leaves, and then the fruits with a white bloom, after a while have an unattractive appearance of rust with a hard crust that is difficult to clean. The sheet plates are deformed, twisted, and stop developing. Young growth on the bushes dries up.

"Weaknesses" of powdery mildew

Like any pest, powdery mildew is "afraid" of chemistry. All preparations in liquid form are applied by spraying three times during the development period: in the spring, before the onset of active vegetation, when the first flowers appear, and another week and a half after the beginning of flowering. Moreover, for preventive purposes, neighboring plants should also be treated with chemicals.

The lesions are already in a critical phase - the fruits cannot be consumed, and the bush must be treated with aggressive chemistry

Attention! Correct irrigation of plants must be carried out with a sprayer with a sprayer wide range... In this case, the liquid is applied to the crown, to the ground in the root zone. Special attention is given to the seamy (shadow) side: under the branches, on the back of the leaves. The plant is conventionally divided into zones and irrigated in turn: "top", "sides" and bottom of the bush with the capture of soil around it.

  • Among the available and inexpensive funds-. It is dissolved in an amount of 100 g in 10 liters of water. Spray at the beginning of the growing season.
  • Not a bad result during the flowering period from treatment with sodium carbonate solution. For 10 liters of water, you will need 50 g of soda ash.
  • A good effect from the solution (0.2 kg of the drug and 10 liters of water at room temperature). It is applied before bud break.
  • It is possible to get rid of powdery mildew on gooseberries with the appearance of buds if their branches are sprayed with the composition. It is sold in specialty stores or prepared by yourself. Bordeaux mixture from powdery mildew on gooseberries is used 3%. For cooking, you need to take: copper sulfate (copper sulfate) - 0.3 kg, lime - 0.4 kg, water - 10 liters. First, vitriol dissolves in 1 liter of water. Then, after the salt is completely dissolved, another 5 liters of water is added. The resulting saline solution is gradually poured into the lime solution. Stirred well, filtered. You should get a Bordeaux mixture with a deep blue color.
  • Copper-containing preparations against powdery mildew on gooseberries: Gold, Ridomil Thanos, etc.
  • A proven remedy for powdery mildew on gooseberries is potassium permanganate (KMnO4). In a weak solution, prepared from 1.5 g of the drug per 10 liters of water, it is applied to the gooseberry twice: before flowering and again after 10 days. For the same purposes, the drug Topaz is used.
  • Crystals of permanganate salt (2 tablespoons) are diluted in water (10 l). The mixture is heated to 90 ° C. In hot formulations, the branches of the plant, like the soil under the bushes, are irrigated before bud formation for prophylaxis.
  • In the retail network, you can buy chemical-based preparations that kill the fungus (fungicides):, Skor, HOM, Abiga-Peak and others. When preparing the solution, you must strictly follow the instructions.
  • Fitosporin has a good effect. This is a complex effect on the fungal and bacterial environment of the drug, especially in the soil litter. It's all about. preserved live bacterium Bacillis subtilis, which does not die even at –20 or +40 ° С. Fruits and soil are treated both before planting the plant and during the fruiting period.

Physical and agronomic measures

Treatment copper sulfate- as a way to prevent powdery mildew

  • When the snow melts, all the foliage that hibernated under the bushes is burned together with the spores.
  • The gooseberries are regularly inspected. Pruned at the first appearance of infected branches. This should be done on the eve of winter and with the onset of spring. All trimmings are burned, or they need to be dug outside the boundaries of the garden.
  • In a critical situation, when none of the processing methods helps, one should act radically: uproot and burn the infected bush.
  • Most effective method get rid of the pest - plant varieties resistant to powdery mildew fruit crops: "Finnish", "Harlequin", "Houghton", "Kolobok", etc.

From the people's storerooms

Folk remedies in the fight have a sparing effect on the plant itself and on the future harvest.

Common household formulations, food additives, or medications in our home first aid kits will help get rid of the pest without resorting to drastic measures.

18.07.2017 2 136

Powdery mildew on gooseberries - control and prevention measures

Powdery mildew on gooseberries, the measures to combat which, cause a lot of trouble, are quite treatable. Biological preparations, folk remedies, incl. processing with ash, fermented milk whey, decoction of tansy or horsetail, onion peel, garlic infusion completely replace chemicals and give excellent positive effect, both in spring and summer, and in autumn ...

Content:

Powdery mildew on gooseberries - pictured

What is powdery mildew and what is its danger

The older the gooseberry bush, the tastier the fruit. But, with age, immunity weakens, and powdery mildew (spheroteka) does not miss the chance to infect gooseberry bushes. It is not difficult to determine the disease, the fungus looks like a whitish or yellowish coating on shoots, foliage and berries, which eventually turns into a rough crust with a characteristic dark shade.

Powdery mildew throws out spores twice a year - in spring and towards the end of summer, the fungus hibernates on the affected areas of the plant. Signs of infection appear already in late May - early June, that is, almost at the very beginning of the period of berry formation. Bushes, which have been chosen by the fungus, slow down, and then completely stop growing. Shoots and foliage are rapidly degrading, blackening and drying out, in turn, the future harvest literally by leaps and bounds loses its presentation and by the time of ripening becomes unsuitable for consumption.

Powdery mildew - folk methods of struggle

It is not easy to deal with powdery mildew, but with a competent approach to the issue, it loses ground quite easily and quickly, leaving the gooseberries in relative peace. The first step is to get rid of leaves, branches and berries affected by the fungus, and also thoroughly clean the area on which the shrub grows from last year's foliage, weeds and other debris. This should be done regularly, carefully monitoring the condition of the plant and the general situation on the site.

Powdery mildew on gooseberries, the control measures of which depend on the age of the plant and the degree of its damage, actively develops when high humidity air (60-80%) and a temperature of +20 ° ... + 25 ° C, infection is also promoted by:

  • excess nitrogen in the soil
  • excessive stocking of gooseberries
  • close proximity to crops at risk of developing fungal infections, such as currants and grapes
  • too much pruning of young shrubs and other maintenance methods that slow down the growth of the plant
  • weakening of the bush due to insufficient care or nutritional poverty of the soil

If in the process of caring for the site, powdery mildew was detected on the gooseberries, measures to combat it should be as safe as possible for the plants. So, you should not try to remove the spheroteca with the help of sulfur-containing preparations, since sulfur causes severe burns to the bark and leaves. The most effective measures are considered to be against powdery mildew on gooseberries, such as:

  1. Copper sulfate treatment (the solution is made based on the calculation of 80 g of substance per bucket of water, and spraying is carried out in early spring before bud break)
  2. Spraying with soap and soda solution (the mixture is prepared from soda ash in an amount of 50-60 g per bucket of water and grated laundry soap, and processing is carried out using an ordinary home broom)
  3. Treatment with a solution of potassium permanganate (the concentration of potassium permanganate should not exceed 1.5-2 g per bucket of water, and this method is most effective at the initial stages of damage by spheroteka)
  4. Spraying with mullein solution (the mixture is prepared from fresh mullein by diluting it with water in a ratio of 1: 3, infusing for 3-4 days and re-diluting in the same amount, and processing is carried out with maximum care at least once a week until the signs of fungal defeat)
  5. Ash solution (3 cups of sifted wood ash should be dissolved in a bucket warm water and insist for 5-7 days, stirring twice a day, after which the mixture is filtered, supplemented with grated laundry soap and applied to the affected bushes after sunset in calm weather)

In practice, other methods of treating fungal infections are also used, for example, folk remedies to combat powdery mildew on gooseberries. An example is the treatment of gooseberry bushes with a decoction of tansy or onion peel(200 g / 10 l), spraying with biological products, in particular, helps Guapsin, Trichodermin, Fitosporin or horsetail decoction (pour 100 g of a dry plant with 10 liters of water, leave for 22-24 hours, then boil for 1.5 hours, dilute 1: 5 , you can spray once a week from early veins until late autumn).

To prepare a decoction of tansy, take 300 grams of a fresh plant (30 grams of dried) and fill it with a bucket of water for 24 hours, then put it on medium heat and cook for 1.5 hours. Strain and cool. The resulting broth is used to cultivate the soil around the bushes. When carrying out work, take precautions, as tansy is poisonous (wear gloves and keep children away).

Prevention of powdery mildew

The best way to protect gooseberries from powdery mildew is to prevent infection; the most effective preventive measures include:

  1. Pruning old or painful gooseberry shoots into autumn period and early spring
  2. Thorough removal of infected shoots and foliage throughout the growing season (spring-summer)
  3. Spraying bushes hot water(with a temperature not lower than + 90 ° C) until the buds swell, flavored with a small amount of potassium permanganate or soda
  4. The use of potash and phosphorus fertilizers in order to improve the nutritional quality of the soil on the site

Finally, it is worth noting that there are those that are immune to pathogens of fungal infections, including the spheroteka, the list of such varieties includes:

  • Gingerbread man
  • Kuibyshevsky
  • Anniversary
  • Senator
  • Harlequin
  • Grushenka
  • Ural grapes
  • Finnish
  • Houghton
  • African, etc.

It is also known that thornless varieties have an enviable resistance to powdery mildew. If you fundamentally do not want to spend time and effort fighting a fungal infection, you should not choose such gooseberry varieties as Russian, Dates, Lefora Seedling, Prunes, Zolotoy Ogonyok and Triumfalny for planting on your site.

Symptoms of the disease should be distinguished from the manifestation of other fungal infections, for example, phytophthora. This is necessary in order to choose effective methods and properly treat the ailing bush.

Danger of infection and consequences

Signs of appearance

It is easy to recognize powdery mildew on gooseberries by the following signs:

  • the surface of the affected leaves is covered with a whitish bloom (mycelium), which is often localized in separate areas in the form of spots;
  • gradually the infection covers the surface of young branches, and then the set berries;
  • the affected areas become brown, coarse;
  • the attack spreads along the entire height of the bush, the fruits do not have time to ripen, they are deformed, they look inedible.

In the American form of the disease, the plaque is denser than in the European: in the latter case, it resembles a cobweb. Despite the fact that powdery mildew is not dangerous for humans, it is impossible to eat a berry if it is covered with a coating - an allergic reaction is possible.

Causes

To understand how you can get rid of gooseberry powdery mildew, you need to understand how the infection occurs. The pathogen that got in from the outside waits for the moment when the planting weakens, after which it begins to multiply. The disease is facilitated by excessive pruning, due to which the increased growth of immature young shoots begins.

One of the provoking factors for the development of the disease is neglect of autumn harvesting of fallen leaves. Inside the substrate, spores of the fungus persist until the onset of a new season, after which they are activated. Strong, well-developed plantations are more resistant to disease damage than weakened specimens. However, this does not mean that the danger will pass them: the development of the dispute will take a little longer, but the ailment will still manifest itself.

Factors influencing development

Seeding the soil alone is not enough for the development of symptoms - this requires the presence of certain factors:

  • excessive watering (if the topsoil is still wet);
  • rainy cloudy weather for 10-12 days in a row;
  • too dense planting of bushes;
  • excess nitrogenous compounds in the soil.

The disease more often appears on stands growing in lowland areas, as well as in the absence of good drainage, when water stagnates in the soil.

Distribution methods

The fungus forms spores that settle on the surface of the soil and then are carried by the wind. Infection can spread through infected cutting tools and even a gardener's clothes. At a high planting density, the spray formed during watering contributes to the transfer of the pathogen of powdery mildew. Pest insects, especially the gooseberry moth, can also spread the spores of the pathogenic fungus.

Effective ways to fight

There are many methods of treatment. How to treat gooseberries from powdery mildew? It is worth noting that it is better to give preference to biological products and folk remedies, especially during fruiting. Fungicides should be used as a last resort.

Chemical

Some drugs can be toxic to bees - this must be taken into account if an apiary is located near the site. The degree of risk, as a rule, is indicated by the manufacturers on the packaging of the products.

Use of copper sulfate

The use of copper compounds is one of the most affordable chemical methods fight against gooseberry powdery mildew. To prepare the mixture, you must:

  • heat up to a temperature of 30-32 ° C 10 l pure water;
  • dissolve 100 g of copper sulfate in a liquid.

The plant is treated with the tool at the beginning of the growing season, that is, before the leaves appear. Spray "medicine" should be not only on the shoots, but also on the soil around the bushes.

Saltpeter

Ammonia preparations are also effective, but they can be used only after the flowering of the plant. The solution is prepared from:

  • 10 liters of warm water;
  • 50 g of ammonium nitrate.

When spraying, it is better to protect the respiratory system by wearing a cloth mask.

Potassium permanganate

Potassium permanganate can help fight powdery mildew if you treat plantations with it at the initial stage of the disease. To obtain a disinfectant, dissolve 1.5 g chemical compound in 1 bucket (10 L) water. Plants on which the first signs of damage are noticed should be sprayed with the resulting mixture. The surface of the soil should also be watered.

Soda ash

Sodium carbonate kills the spores of the fungus that causes gooseberry powdery mildew. The chemical is used in conjunction with soap. To prepare a medicinal liquid, you will need:

  • 50 g soda ash;
  • 10 g of laundry soap;
  • 10 liters of warm water.

All ingredients are thoroughly mixed. Processing is carried out twice: before flowering and after its completion.

"Topaz"

With the help of chemicals, fungal spores are destroyed, and the development of mycelium stops. "Topaz" is a one-component product based on penconazole. The advantage of this substance is that it penetrates extremely quickly into the tissues of the plant, so that the treatment of plantings is possible even 2-3 hours before the coming rain. The effectiveness of "Topaz" is not affected low temperatures air.

To remove the fungus and not harm the plants, the dosage of the drug should be strictly observed.

The contents of a 2 ml ampoule are dissolved in 10 liters of warm clean water. It should be sprayed on bushes in calm weather. The best period for the procedure is the beginning of the growing season. "Topaz" is not suitable for wrestling if the fruit is set. With the secondary appearance of signs of powdery mildew, spraying is carried out again.

"Hom"

The drug is copper oxychloride. Treatment with a diseased gooseberry remedy should be carried out during the growing season, the only exception is the flowering period. To prepare the mixture, dissolve 40 g of powder in 1 bucket of clean water. Before dilution, a small amount of liquid can be added to the dry product to make a gruel. The mixture must be used immediately - it cannot be stored. For better adhesion active substance you can add 100 g of milk to the solution. It is important to ensure that the leaves are completely wetted, especially from the bottom. The procedure is carried out in calm weather.

"Amistar Extra"

The product contains azoxystrobin and cyproconazole. Their complex provides a long-term protection effect by blocking the growth of pathogenic fungi. Fungicide is effective at all stages of the development of the disease. Its protective effect continues even after precipitation.

The disadvantage of the product is that it is produced only in large-volume containers, since it is designed for industrial use.

"Amistar Extra" is dangerous for bees, therefore it requires special care when handling it. It is best to carry out the treatment wearing a mask. To obtain a solution, the suspension is mixed with water in the proportions indicated in the instructions. The first spraying is carried out when signs of powdery mildew are detected, repeated if necessary, if the disease has resumed its development.

Biologicals

The most common remedy is Fitosporin-M. This microbiological preparation containing the spore culture of Bacillus subtilis is available in the form of a powder, paste or liquid (suspension). It spreads through the vascular system of the gooseberry and stops the growth of the fungus. The product retains its properties even after freezing.

"Fitosporin-M" is used at any stage of development: during the growing season, when the buds open, fruiting. Spraying is carried out once every 10-12 days. The drug is diluted with water according to the instructions. 10 liters of water are consumed:

  • 5-6 g of powder;
  • 15 g of pasta.

The suspension is diluted by adding 10 drops of liquid for every 200 ml of water. Another widely used drug is Planriz. Its basis is the culture of Pseudomonas fluorecsens. Beneficial microorganisms destroy the shell of powdery mildew pathogens. Pentafag C, Gamair, Alirin B have a similar effect.

Folk recipes

Home-made preparations are harmless to humans and pets. They are not toxic to bees, in addition, when using them, you can eat the berries without fear. How to get rid of powdery mildew on gooseberries using folk remedies?

Soda solution

Sodium bicarbonate is a compound that inhibits the development of fungus. In the fight against powdery mildew on gooseberries, soda can be "first aid" if country cottage area located far from the city and there is no way to quickly purchase a product industrial production... When preparing a medicinal solution, it should be borne in mind that the powder should not be diluted with water, the temperature of which is higher than 55 ° C - beneficial features substances are lost. The spray mixture should consist of:

  • 5 liters of water;
  • 2 tbsp. l. baking soda;

To achieve the maximum effect, the treatment is carried out every 10-12 days. By the way, this frequency is relevant for all folk remedies for powdery mildew on gooseberries.

Horsetail decoction

Many people underestimate the composition, which is based on vegetable raw materials. Meanwhile, when fighting powdery mildew on gooseberries field horsetail competes successfully even with chemicals... It enhances the immunity of plantings, while simultaneously performing therapeutic and prophylactic functions. To prepare a decoction, 1 kg of chopped horsetail should be soaked in 10 liters of water. After 12 hours, the liquid is brought to a boil, then cooled. The resulting concentrate is diluted in a 1: 5 ratio. Plants are processed every 10-12 days.

Tansy

The decoction of the plant is used for preventive purposes: it can be sprayed on the soil surface around the plantings. The procedure is carried out twice a year: in spring and autumn. To obtain a disinfectant liquid, 30 g of dried raw materials should be poured with 10 liters of water and insisted for 24 hours. Then the infusion is boiled for about 1.5 hours and cooled. The resulting broth does not need to be diluted.

Kefir or sour milk

As an effective and safe measure to combat powdery mildew on gooseberries, if berries have already appeared, processing with fermented milk products can be recommended. For spraying plantations, 1 liter of kefir or liquid curdled milk is mixed with 9 liters of pure water. The procedure is carried out three times, maintaining four-day intervals between irrigations. This remedy also helps in the fight against late blight.

Iodine

To prepare the solution you will need:

  • 10 ml of medical iodine;
  • 10 liters of water.

The mixture is poured into a container with a spray bottle. The resulting preparation should abundantly moisten the affected plants. The procedure is repeated after 2 weeks.

Mullein solution

An effective measure to combat powdery mildew is mullein treatment. To get spray liquid:

  • 1 part mullein is bred with 3 parts of water and insisted for 3-4 days;
  • the resulting concentrate is again diluted in a ratio of 1: 3;
  • filter the substance.

Processing is carried out before the opening of the buds, after the completion of flowering and before leaf fall.

Soap and soda

Surfactants are added to medicinal mixtures for better adhesion: this way the agent will stay longer on the surface of the sheet plates. Three ingredients are required to prepare the solution:

  • 10 g baking soda (flat tablespoon);
  • 5 g of laundry soap;
  • 4 liters of water.

Sick plantings are sprayed in the morning or evening, when they are not exposed to direct sunlight.

Brilliant green

The usual "brilliant green", which is in any first-aid kit, is effective remedy against fungus. To each liter of water add 1 ml of the substance. The resulting solution is used to treat the leaves, shoots and fruits of the gooseberry.

Soda solution with aspirin

To prepare the mixture you will need:

  • 10 g baking soda;
  • 1 aspirin tablet;
  • 5 g of laundry soap, grated;
  • 4.5 liters of warm water.

All components are thoroughly mixed, after which the liquid is placed in a container with a spray bottle. Spraying is carried out every 10-12 days.

Preventive measures

Fungal diseases on plants can be prevented if enough time is devoted to their prevention. With well-organized care, you will not have to then wonder how to deal with powdery mildew on gooseberries. What to do to avoid adversity?

Correct distance between landings

As mentioned above, insufficient space between bushes is an additional risk factor. The infection spreads more easily through such plantings. Therefore, placing the gooseberry on garden plot, keep the distance:

  • between individual copies - 1.25 - 1.5 m;
  • between rows - from 2 m.

Hot treatment with potassium permanganate

Gardeners, wondering how to treat gooseberries from powdery mildew in spring, often forget that ashtrays are very sensitive to thermal effects. Sprinkling hot liquid in the spring before the buds swell will help prevent fungal growth. This will require:

  • 1 g of potassium permanganate;
  • 10 liters of water with a temperature of about 90 ° C.

A small watering can is used to treat the shoots with a solution. The action is carried out once, even if the hot mixture does not hit the entire surface of the plant, otherwise the planting can be ruined.

Timely pruning of bushes

The procedure prevents thickening of the bushes, which provides the culture with good immunity. Immediate removal of areas affected by the fungus helps localize the infection. The cut branches must be burned. Gardeners distinguish between:

  • formative pruning carried out in the spring;
  • sanitary (removal of broken branches affected by pests);
  • anti-aging (to stimulate the appearance of young shoots).

In the first year, 3-4 shoots are left, in the second - 8, in the third - 12. By the age of five, the shrub should have 20 well-developed branches. In autumn, the plantings are carefully examined, cutting off sick, damaged fragments.

Harvesting leaves and rotten fruits

The fallen substrate in the fall should be removed and burned. This is necessary not only for the site to have a well-groomed appearance. The causative agent of ashtrays hibernates in the leaves, starting in spring to spread over the garden plantings. A rake with fine teeth is suitable for cleaning.

Digging the soil in the fall

The procedure is necessary, since powdery mildew spores settle in the upper layers of the soil. Turning over the earth layers contributes to the death of pathogens. The shovel should be deepened by 12-14 cm. At the same time, you can apply traditional "autumn" fertilizers (superphosphate, dolomite flour). Break up large lumps not necessary: ​​this procedure should be postponed until spring.

Loosening of near-trunk circles

Soil cultivation with a hoe should be carried out every 20-30 days. Loosening provides oxygen to the root system, reduces the likelihood of fungal attack, accelerates plant development, strengthening its immunity. The procedure also prevents stagnation of moisture in the soil.

Spraying with infusions and special formulations

It was said above that in order to combat the ashes, gooseberries are treated with a decoction of field horsetail or tansy. However, these measures are not only curative. Even if there are no signs of disease on the plants, as a preventive measure, they can be sprayed once every 2 weeks. In addition to infusions, treatment to prevent ailment is carried out using:

  • kefir;
  • baking soda;
  • "Greenery".

Compliance with fertilization requirements

To avoid imbalance nutrients in the soil, top dressing should be applied correctly. Fertilizers containing nitrogen, the excess of which contributes to the appearance of powdery mildew, are usually added to the soil in spring. If an infection appeared on the site last season, you can skip this procedure. Instead of this:

  • before the appearance of leaves, manure is introduced (2 kg per 10 l of water), and the surface is also sprinkled with ash;
  • in summer, magnesium sulfate (50 g per 1 m²) and potassium humate (20 g per 10 l of water) are added to the soil;
  • in the fall, after picking berries, superphosphate (15 g per 1 m²), dolomite flour are embedded in the ground during digging.

Powdery mildew on gooseberries is not a verdict for planting. The disease can be completely prevented if you pay enough attention to agricultural technology. It is also quite possible to cure the affected shrub if the spread of the infection is stopped. The treatment of gooseberries from the fungus must be timely, then the plant will fully recover.