Many already have a belief - the rains have charged, wait for powdery mildew on the gooseberries. Gooseberry often suffers from this disease. It becomes very offensive when the bush, strewn with juicy berries, is covered with bloom. The berries become unsuitable for eating, and this situation can be repeated from year to year. What to do in such cases?

The first signs of the disease - the lower foliage and young shoots are covered with plaque white... It is dry, velvety. It seems that flour was poured onto the bush. If you shake the branches, the plaque does not crumble, and if you rub it carefully with your fingers, it is peeled off.

Plaque spreads rapidly throughout the bush. Get amazed top leaves, petioles, branches. Berries are the last to be damaged. After a while, the plaque darkens, becomes dirty gray or brown.

The disease is caused by fungal spores. They are spread by the wind, some insects, and overwinter on the ground in the near-trunk circles of the diseased plants.

Conditions favorable for powdery mildew: humid and warm. If the gooseberry was sick last year, then the spores can begin to multiply even in dry weather.

If powdery mildew on gooseberries appeared in spring or early summer, then chemical fungicides can be used:

• "Rajok" - is used both to combat the disease and to prevent it. It is not washed off by rain, it is important that there is no precipitation within two hours after treatment. Protection from disease for 7 days;
• "Tiovit-Jet" - to carry out the treatment when the air temperature does not exceed 15 ° C;
• "Topaz" - effective application at the initial stage of the disease, after 10 days the treatment must be repeated;
• "Vectra" - used at the first signs of damage, can be processed 4 times per season.

If the disease has attacked the plant in mid-summer, when the branches are already covered with berries, biological preparations should be used:

• "Alirin-B" - in addition to treatment for powdery mildew, restores the soil microflora, reduces the level of nitrates in berries, increases the content of vitamin C in fruits;
• "Fitosporin" - it is recommended to treat all parts of the plant and the soil under it. Processing is recommended during the entire growing season every two weeks.

Folk remedies in the fight against powdery mildew

Folk remedies have the expected effect only when processing plants on initial stage disease. Application should be regular, all parts of the plant should be sprayed repeatedly.

1. Soda ash is diluted in water at the rate of 30 grams per 10 liters. To prolong the duration of action, any liquid soap is added to the solution. You can dilute baking soda in the same proportion. Processed in the spring before flowering and immediately after it ends.
2. Effective against powdery mildew: kefir, yogurt or milk whey. 1 liter of any fermented milk product is diluted in 9 liters of water. Treat 3 times, interval 3 days.
3. Pour boiling water over gooseberries from a watering can. It must be done in early spring, after the snow melted.
4. Helps Fight Powdery Mildew foliar feeding gooseberry with ammonium nitrate. To prepare a solution, 50 grams of fertilizer is diluted in 10 liters of water. Processed once, after flowering.

Prevention

Prevention should be started in the fall, when the gooseberry leaves all the leaves. Fallen leaves are removed and burned. Remove all weeds.

Pruning the bush. In addition to old and diseased branches, all that thicken the gooseberry are cut out.

Bushes growing apart in an open sunny area are the least sick. If the gooseberry is in the shade for part of the day, it should be transplanted to another location.

In the spring, before bud break, it is advisable to process copper sulfate... Spray all branches and trunk circle.

If the control measures do not help, and the gooseberry is sick from year to year, then the best option - uproot old bush, and plant a powdery mildew-resistant gooseberry in the garden.

Powdery Mildew Resistant Gooseberry Varieties

Powdery mildew resistant varieties have high immunity. Thanks to this, they are not damaged by some other diseases.

• "Grushenka" is a medium-sized variety with drooping branches without thorns. Medium late ripening, ripe berries do not stay on the branches for a long time. Winter-hardy and drought-resistant.
• "Ural grapes" - green berries, after ripening they must be quickly picked. Overripe fruits become tasteless, quickly crumble.
• "Commander" - early variety... Bush small size, spines are rare. The berries taste like grapes.
• Salute is a high-yielding one. Ripe berries do not crumble for a long time, do not lose their taste, do not overripe.
• "Kolobok" - gooseberry berries are very large, the ends of the branches lie on the ground. Requires frequent pruning.
• "Kuibyshevsky" - spherical bush, few thorns. The berries are dark, with a thin but firm skin. Requires thinning pruning. Winter-hardy.
• African is a gooseberry variety suitable for humid climates. Winter-hardy, shoots without thorns, the taste of berries resembles the taste of currants.
• "Jubilee" - a small bush, shoots are covered with thorns. The berries have good keeping quality. Resistant to frost and dry summer.
• "Harlequin" is a medium-sized bush, the thorns are not frequent. Withstands frost. High-yielding.

It is possible to overcome powdery mildew, but all therapeutic measures should be carried out not only with gooseberries, but also with other plants in the garden. Regular inspection of plants, preventive treatment, agrotechnical measures for caring for the garden, timely treatment - only with this approach can this disease be completely eradicated.

Video

Gooseberries are popular among the people due to their taste and health benefits. Just collect from him good harvest does not always work out. The blame for everything is powdery mildew, which constantly overcomes gooseberry bushes.

Old varieties are especially susceptible to disease, which are the most delicious. Below we will consider how to treat gooseberries in spring from powdery mildew, preventing damage to berries and the death of bushes. The main thing is not to waste time by doing the spring treatment.

Indeed, if you do not fight powdery mildew, it can completely destroy the crop, and in a few years the bush can die altogether. This is a fungal infection that is officially called spheroteca.

At first, it affects young shoots and leaves, then goes to fruits, and then is taken as perennial branches. Parts of the bush are covered with a white bloom, which after some time turns brown and even brown. Flowers begin to crumble, the leaves wither and curl, the berries do not develop, the branches bend and dry out.

The fungus spreads through the air or through insects. At the end of May, the disease is already becoming visible. Comfortable conditions it is considered warm and wet weather... This disease has already adapted to our weather conditions, therefore it perfectly tolerates the cold.

Spores persist on fallen leaves and shoots.

But do not be discouraged if you notice this disease on your bushes. You can fight it quite successfully. The most important thing is not to postpone treatment indefinitely.

When is the best time to process?

To prevent the appearance of powdery mildew on the bushes, as well as to destroy existing spores, it is recommended to carry out 4 gooseberry treatments:

1. Before bud break. It is better to do this with hot wateras described below.
2. Before flowering, on a green cone.
3. Immediately after flowering.
4. Autumn processing, which must be done before the leaves fall.

If it has not been possible to prevent the disease with preventive spraying, you should take action immediately after you notice the first signs of the disease.

Ready-made preparations for spraying gooseberries

There are many drugs that can heal plants from powdery mildew. We will distinguish 2 categories: chemical and biological products.

Chemical

It is believed that the use of chemicals helps to quickly get rid of the disease.

However, when the fruits have already formed, it is better to use safer means:

1. Nitrofen. 200 g of the drug is diluted in 10 liters of water. Bushes are processed strictly on bare shoots, until bud break. You can not use the solution if the buds have started to grow, as this can lead to their death.
2. A solution of one of the following fungicides: Topaz, Fundazol, Tiovit-Jet, Tilt, Vectra or the like. It is advisable to process gooseberries with these preparations twice: before and after flowering. The proportions of dilution with water should be seen on the packaging of each of these preparations.

Copper based

These include a large number of ready-made formulations that are diluted with water before use. For example, Khom, Oksikhom, Copper oxychloride, copper sulfate, etc. They are diluted with water in accordance with the instructions.

You should know!Preparations containing copper can only prevent the development of the disease, but they are not able to cure an existing disease. It is an excellent plant protection, but not a medicine.

The fact is that the mycelium of powdery mildew lives inside the cells of the plant, and only its spores are on the surface. Copper cannot reach the mycelium. Therefore, the best result is given by spring processing gooseberry with these substances.

Colloidal sulfur

The effect of sulfur on a fungal infection is that, penetrating the inside of the fungus, sulfur combines with hydrogen molecules and displaces oxygen. Mycelium, not receiving oxygen, dies.

Diluted in 5 liters of water 30-40 g of sulfur. It is necessary to use the ready-made solution immediately, on the day of preparation, since it is not stored for a long time. Sulfur is not mixed with other drugs, but is used only in pure form.

Important!Colloidal sulfur can be used in the temperature range from +20 to +35 degrees. At higher temperatures, burns and leaf fall are likely.

The protective effect of sulfur lasts 10-14 days. It is recommended to use it no more than 3 times per season, but it is advisable to carry out the last treatment no later than a week before harvesting. If the bushes were previously treated with other pesticides, then a pause of 2 weeks must be allowed before applying sulfur.

Biologicals

Let's list some of the dozens of possible options.

These tools are tested in practice and give positive effect in the treatment of powdery mildew:

1. Gaupsin. It is a concentrate. To prepare a solution, 150 g of the drug are diluted in 10 liters of water.
2. Fitosporin. Available in powder, liquid or paste form. An aqueous solution is prepared, which is used for processing.
3. Baktofit. This is a biological product wide range action, produced in powder form.
4. Trichodermin. Available in powder form. Before use, dilute 10 g of powder in 5 l of water.

Biological products contain colonies of microorganisms that feed on fungal spores.

The positive qualities of biological products are that they are safe for humans and plants, and they can be sprayed on plants at any time. Disadvantage - a short time actions. For example, Gaupsin is only valid for 15 days. True, during this period he manages to cope with fungi. Biologicals cannot be combined with copper-based substances.

Folk remedies for processing gooseberries

Below will be given folk ways fight against powdery mildew on gooseberries.

Wood ash

Ash effectively destroys fungal spores, prevents the appearance of aphids, caterpillars and slugs on plants. In addition, it is a supplier of phosphorus, calcium and potassium, which are needed by plants.

1 kg of sifted wood ash (2 liter cans) is infused for a week in 10 liters of water. The solution is filtered so that the sediment remains at the bottom, and then the bushes are treated with it at intervals of several days.

Multiple treatments are allowed throughout the season. But the best results are obtained when used in early spring. Provided full compatibility with any substances. Ash is harmless to plants and humans.

Potassium permanganate solution

For 10 liters of water, approximately 1.5 g of manganese is taken. Bushes are processed twice: before and after flowering. Be sure to spray with potassium permanganate trunk circles under the gooseberry to disinfect them. If you apply manganese on time, then the disease can be stopped completely.

Infusion of mullein or rotted hay

Take 1 part of rotted manure or hay and dilute in 3 parts of water. Within 3 days, the mixture is infused and then filtered. To obtain the finished solution, add another 9 parts of water and spray the gooseberries. Microorganisms, actively developing in rotted manure or hay, feed on the fungus and destroy it. The treatments can be repeated every 10 days.

Baking soda

It is used in combination with laundry soap. 50 g of soap is pre-grated and poured into a bucket of water (10 l). After dissolving it, 2 tablespoons of soda are poured into the water. The solution is used to spray the bushes or to irrigate them with a watering can. The procedure must be done before flowering and then after flowering.

Milk whey, kefir, reverse, milk

Any fermented milk product, when applied to leaves or shoots, forms a strong oily film on their surface, blocking the access of oxygen to the mycelium. As a result, the fungus dies.

The dairy product is diluted with water in a ratio of 1: 10. Plants are sprayed only in dry weather, several times, at intervals of 3 days. The increase in the number of treatments is only beneficial to the plants, since the gooseberry receives additional nutrients.

Horsetail decoction

Both fresh and dry herbs are suitable for preparing the broth. Fresh herbs should be taken 1 kg, and dry - 100 grams. The grass is soaked in 10 liters of water for a day, after which it is boiled for 1 hour. The infusion must be cooled and diluted with water in a ratio of 1: 5. Now you can spray the bushes.

Attention! Horsetail decoction is stored for no more than 7 days.

The broth can be used repeatedly throughout the season.

Decoction of tansy flowers

In order to prepare the broth, you should take 300 g of fresh or 30 g of dried tansy flowers, insist for a day in a bucket of water, and then boil for 1 hour. No need to dilute. Use for treating bushes and land under bushes.

Onion peel

200 g of onion skins should be soaked in a bucket of hot water for 2 days. After straining it can be applied. Repeated processing of gooseberries is allowed throughout the season.

Prevention

If during the season to carry out preventive measures with gooseberry bushes, you can significantly reduce the likelihood of infection:

1. In early spring and autumn, the bushes are pruned. Old and diseased shoots are removed, which contributes to better development bush. Sick branches must be burned.
2. In the spring, the fallen leaves on which the spores of the fungus have wintered should be removed under the bushes. After that, the soil is dug under the bushes.
3. In early spring, before bud break, it is recommended to spend very effective procedure... Gooseberry shoots are doused with hot water at a temperature of 90 degrees. Hot water destroys not only powdery mildew spores, but also many other fungal infections. For best results, you can add baking soda (2 tablespoons per bucket of water) or diluted potassium permanganate to the water. Only one treatment of bushes with hot water is allowed!
4. The gooseberry resistance to powdery mildew increases when applied under the bushes of phosphoric and potash fertilizers... A wood ash hood is an excellent tool not only to feed the bushes, but also to protect them from the spheroteca. But nitrogen fertilizers better not to apply. Shoots may not mature by the fall, which will increase the likelihood of infection.
5. Planting dill, garlic, black shaves near gooseberries reduces the likelihood of infection.

Precautionary measures

Treatment of plants with topaz, colloidal sulfur or other fungicides should be carried out in protective equipment. Also, it is advisable to use a respirator or gauze bandage. If drugs come into contact with the skin or eyes, in order to avoid burns, rinse these places large quantity water.

It is recommended not to use any one drug, but to alternate them. So you will be able to avoid the addiction of the mycelium to any one substance. Also, you can choose the most effective and convenient options for influencing powdery mildew.

The fight against powdery mildew should be carried out in a timely manner and fully, in several stages. In this case, it is possible to avoid the appearance of the disease, as well as completely get rid of the manifestations of the disease.

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Powdery mildew on the gooseberry - control and prevention measures

Gooseberry powdery mildew: 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, mainly young, berries are affected. The disease begins to manifest itself immediately after the leaves open and progresses throughout the growing season.

Symptoms of gooseberry powdery mildew

Starting in spring, the infected plant organs begin to become whitish. mealy bloomwhich is very easy to wash. Young affected leaves usually curl, and the emerging ovary crumbles, the berries affected by the disease shrivel 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 overwinters 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 the 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: leaves of ten days old, 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 can 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;
• you need to grow healthy bushes.

Chemical control measures

Spraying of bushes is carried out either in the fall after the leaves fall, 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, multiplicity 4 times;
• Horus 75, century - 0.5-0.7 l / ha - during the growing season, 3 spraying should be done.

When powdery mildew prevails on gooseberries, measures to combat this disease are carefully selected. Indeed, most often it is noticed when berries are poured on the bushes. It is unlikely that pesticides can be used in the summer when processing gooseberries from powdery mildew, so we prepared several folk recipes treatment and prevention of this disease.

Powdery mildew on gooseberries: control measures from the piggy bank of folk remedies

As a rule, powdery mildew is found on gooseberries by gardeners in the summer, when there are already berries, what to do in this case? How to spray? After all, fungicides have a waiting period of 3 weeks, and berries ripen earlier. Let's go over the arsenal folk remedies, so as not to harm yourself and the bush:

1. Infusion of onion peels. Take onion skins, pour water and insist for several hours. Spraying with this solution can be used either as a preventive measure, or only at the very initial stages of the disease.
2. Wood ash solution. Dilute 1 liter of ash in a bucket of boiling water. Preferred wood ash... Also add liquid or laundry soap to the solution so that it does not immediately wash off the leaves. Spraying the entire shrub is carried out after two days - this solution should be well infused. The gooseberry is treated with an ash solution twice with an interval of 10 days.
3. Soda solution. Dilute 50 grams of regular baking soda in a bucket of hot water. Liquid soap, or a few shavings of ordinary household soap, is also added here - this component so that the solution does not just "drain" from the leaves, but lingers on it, destroying the fungus. After the solution has cooled, you can start processing currant leaves. The procedure is repeated after 7 days.
4. Serum solution. To prepare the solution, take whey, kefir, any other fermented milk product, mix with water in a proportion of 1 part serum and 10 parts water. Spraying with this solution is carried out similarly to soda, only more often - once every three days for a fairly long time. The action of the solution is such that the serum forms a dense film on the surface of the leaf, which does not allow the fungus to "breathe", and thereby "stifles" its development. But for such an action, it is necessary that the film wraps around the sheet as long as possible, so the procedure should be carried out only in dry weather.
5. Infusion of garlic arrows ... Pour half a bucket of collected arrows with water and leave for 24 hours. Spraying the leaves with the ready-made infusion must be carried out on both sides of the leaf.
6. Field horsetail infusion. This infusion is prepared for a day. First, a concentrate is made - for 1 liter of water, take 100 g of horsetail, soak, leave for 20-24 hours. After that, the infusion must be boiled for 2 hours. As soon as the concentrate cools down, it is filtered. Since it is intended for multiple uses, the solution is stored in the refrigerator. For spraying diseased bushes, the concentrate is diluted with water as 1/5, the procedure is carried out only 4 times every three days.
7. A solution with rapeseed oil. 10 mg of oil is diluted in a liter of water, approximately 1% solution is obtained. It must be used immediately after preparation. Rapeseed oil effectively fights fungus, significantly reducing its amount.
8. Tansy decoction. It is rather a prophylactic agent that destroys the fungus not on the bushes, but those spores that are in the soil and can spread to the plant. Approximately 300 grams of fresh tansy is placed in a bucket and poured with water, infused for a day, after which it is brought to a boil and left for 2 hours over low heat. After the solution has cooled, the soil is spilled with it near the gooseberry bushes. It is advisable to carry out this procedure only in the spring.
9. Dry mustard solution. Take 2 large tablespoons of dry mustard on a bucket of boiling water. After the solution has cooled down, spraying can be carried out.
10. Iodine solution. For the treatment of bushes, a mixture of 10 liters of water and 10 cubes of iodine is used. It will take two sprays with an interval of 3 days.
11. Infusion of mullein. To prepare the infusion, take 1 part of the mullein and 2 parts of water. Usually a bucket is made. It is necessary to insist for 4 days, after which the concentrate will be ready for spraying. In no case should you spray gooseberries with pure infusion! It is imperative to dilute with water in a ratio of 1/10, only after that you can process gooseberries against powdery mildew. You need to spray in the evening, after the sun has disappeared. Otherwise, the bush may get burned.

Effective ways to prevent and treat powdery mildew

Prevention of powdery mildew on gooseberries prevents the development of the disease and preserves the berry harvest.

1. Light transmission of landings

Do not thicken the gooseberry planting. The distance between mature bushes should be at least one and a half meters. Break up the berry only in well-lit areas of the garden and vegetable garden. Thin bushes in the spring and fall by removing the inward-growing shoots.

2. Hot shower with potassium permanganate

In early spring, after the snow melts (before the buds swell), sprinkle all gooseberry branches with hot water (temperature about 90 ° C) with the addition of potassium permanganate crystals (the solution should have a pale pink tint). Instead of potassium permanganate, you can use baking soda (2 tablespoons per bucket of water). Such a shower prevents the development of all fungal diseases and destroys the egg laying of some pests.

3. Cropping

We advise you to carry out sanitary pruning of gooseberry bushes in early spring and autumn. All shoots with signs of disease, as well as dry, broken and weak branches are subject to removal. IN summer time cut off all branches on which there are signs of mealy. Plant residues after the procedure must be disposed of by burning.

4. Removal of litter and fallen

In the summer, you need to completely select all the berries from the ground under the bushes and bury them in a secluded corner or take them out of the site. In the fall, the trunks of the bushes should be cleaned as much as possible from the leaves in which the spores of fungi winter.

5. Autumn digging

After harvesting plant residues, it used to be customary to dig up the soil around each bush to a depth of at least 12-15 cm. The spores of the fungus during such digging will be underground or on the surface and freeze over the winter.

Loosen the soil under the bushes regularly. Do not let the branches of the plants touch the surface of the ground, for which make supports or wooden fences.

7. Spraying

Sick bushes should be sprayed in the spring before the leaves begin to bloom with a tank mixture of biofungicides. Another option is soda ash solution, it works well against phytopathogen mycelium. The solution is prepared by dissolving 50 g of soda and the same amount of grated laundry soap in a bucket of water.

8. Processing with ash infusion

It is possible to irrigate the plant with infusion of plant ash for the entire vegetative period. When the first symptoms of the presence of mycelium appear, the plants are treated, trying to ensure that the solution falls on both parts of the leaf plates. To prepare this natural fungicide, 1 kg of ash is poured with a bucket of hot water and the liquid is infused for about 4 days. After straining, 30 g of soap is added to the infusion to improve the adhesion of the composition. The event is performed three times with an interval of 1-2 days.

9. Bacterial prophylaxis

Infusion of rotted mullein contains bacteria that inhibit the vital activity of the pathogen of powdery mildew. Humus is poured with water 1: 3, allowed to brew for three days, diluted with standing water 1: 2 and used to spray infected bushes.

10. Correct fertilization

Do not use nitrogen preparations (urea, ammonium nitrate, fresh manure and bird droppings) for feeding gooseberry bushes, as excess nitrogen increases the susceptibility of plants to fungal spores. If you have not given up chemistry, add potassium-phosphorus complex compounds under the bushes, for example, potassium chloride and superphosphate. But fertilizing from plant ash is safer.

Carefully caring for the gooseberries, you can fully enjoy the juicy aromatic berries every summer. And although popular measures the struggles given by us are milder, but together with preventive methods, you will get rid of such a disease as powdery mildew on gooseberries (and certainly do not poison yourself with pesticides).