Recipes for folk remedies for treating cucumbers against diseases. How to treat cucumbers in a greenhouse How to treat cucumbers for diseases prevention

Spring has come, it's time to plant vegetable gardens so that you can enjoy fresh herbs and vegetables in summer and fall. Some have even already begun to grow the most unpretentious plants in greenhouses or in their home on a window or balcony.

Today we will talk about cucumbers and how to protect them from all kinds of pests and plant diseases. We are for a healthy lifestyle and healthy food, so we will not offer chemical compounds for processing cucumbers. They may be effective, and you can make good money from their advertising, but health is more expensive.

Treatment of cucumbers

With such simple and effective recipes made from natural ingredients, the question is, how to process cucumbers, will disappear immediately.

When you eat cucumbers, you want tomatoes. We'll tell you about how to process them.

To prevent and treat late blight, spray tomatoes with a simple solution of 100 grams of fresh yeast diluted in 10 liters of water.

To combat tomato pests, there is a recipe for an excellent feeding. Mix half a kilogram of chicken manure, half a kilogram of wood ash and 5 tablespoons of sugar. Dilute this mixture in water with yeast. Treat the plants with the solution once a week.

Helpful tips? Save them to your wall on social networks so as not to lose them.

Before you start growing cucumbers, you need to prepare for possible problems with the plant. Only after studying all the rules for growing a crop and the technology of protecting it from diseases using traditional methods can you count on a rich harvest.

Rules for iodine treatment

Treating cucumbers with iodine helps relieve them from a number of diseases. In particular, iodine helps to defeat root rot. The causative agents of the disease live in excessively wet soil. The disease is accompanied by darkening of the roots, yellowing of the leaves and falling of the ovaries.

An effective treatment for root rot involves lubricating the stems of cucumbers with an iodine solution (one part iodine to two parts water). The procedure must be repeated several times.

The use of this folk remedy is also effective against powdery mildew. You can rid cucumbers of this disease by preparing a mixture of 1 liter of milk and 10 drops of iodine, which dissolve in a bucket of water. The prepared mixture should be sprayed onto the plant and soil.

A mixture of iodine and brilliant greens

Treating cucumbers with brilliant green and iodine gives good results. They contain copper compounds, which negatively affect plant diseases.

Folk remedies based on antiseptics are easy to prepare. To do this, add 10 ml of brilliant green to a bucket of water. Cucumbers will not become greener after spraying, but this product will definitely protect against diseases.

Use of wood ash

Wood ash will help defeat various types of vegetable spots that develop under the influence of bacteria. The disease can be prevented by spraying the leaves with an ash solution. It helps slow down the development of powdery mildew, which is accompanied by the appearance of spots and a white coating on the leaves. The ash solution will stick to the crop better if you add a little soap to it. Treating the land on the site with ash will make it difficult for slugs to move across it.

Traditional methods of treating cucumber diseases help avoid the use of chemicals.

Using Garlic Solution

Garlic infusion is effective not so much against diseases as against pests. It's easy to prepare. There are 2 main recipes. According to the first, you need to chop the garlic cloves and place them in a liter jar, pour in 0.5 liters of vegetable oil and 0.03 liters of liquid soap. The mixture should sit for 24 hours. To spray cucumbers, you need to dilute 0.02 liters of solution in 0.5 liters of water and stir until it becomes homogeneous.

According to the second recipe, take the same number of garlic cloves (they need to be put through a crush), 1 liter of water and 0.015 kg of soap. All ingredients are placed in a two-liter jar and filled with water. The full jar is covered with a lid and placed in a dark place for 12 days. After this, the infusion must be filtered and diluted with water before use.

When spraying with garlic tincture, it is important to strictly adhere to the recommended concentration. To do this, 0.05 liters of tincture must be diluted in a bucket of water. Vegetables are sprayed with the prepared solution several times until the pests leave them.

Spraying with whey

If plants become sick during harvest, they cannot be treated with chemicals. It is advisable to solve the problem with iodine and milk or at least whey. It contains monoacid bacteria that can inhibit the activity of fungi and saturate the culture with useful substances.

As a result of using the serum, a thin film is formed on the leaves of the vegetable, protecting them from fungi. However, treating plants with serum has one significant drawback - short-term action. Therefore, such treatments should be regular.

It is advisable to process the crop in July, since during this period it is most weakened. It is prohibited to treat the culture with undiluted whey. Before use, the dairy product must be diluted with water in a 1:1 ratio. The prepared solution is heated to 25 °C and only after that it can be used to process the vegetable.

Feeding with mullein solution

Powdery mildew, which is characterized by the appearance of a gray coating on cucumbers, gradually leads to their death. The first symptoms of the disease can be easily overcome with the help of natural nutrition - mullein tincture. In addition, this fertilizer is also indicated for improving crop growth.

It is very simple to prepare a healing solution: just dilute fresh manure in water in equal quantities. The solution should be allowed to brew for 24 hours, then diluted in a ratio of 1:10. The solution must be thoroughly mixed and watered between the rows at the rate of 1 bucket of fertilizer per unit area. The slurry must be combined with water (1:4) and left in a warm place for a week, then add water to the solution and feed the vegetable.

Iodine and brilliant green

So, the benefits of iodine for the growth of garden crops have been known for a long time. The availability and effectiveness of other folk remedies, as well as their correct use, will help you do without insecticides altogether.

From this video you will learn effective tips for combating diseases of cucumbers.

Cucumbers suffer from many diseases, so they require special care and regular preventive measures to protect them from diseases and pests. Unfortunately, diseases cannot always be prevented, and one has to resort to means that can destroy the source of the problem. You can fight diseases with folk and chemical drugs. We will tell you in this article how cucumbers are treated with one or another agent against pathogenic microorganisms.

Powdery mildew - perhaps the most common disease, which appears on the leaves and stems of cucumbers with a sloppy whitish coating, which can be easily wiped off at first. But gradually it darkens to a brown color and thickens. Affected leaves turn yellow, dry quickly, and if nothing is done, the entire bush may die.

Control measures: you need to immediately remove all diseased organs and treat the plant leaves with colloidal sulfur, copper oxychloride, Homecin or Arceride. Folk remedies include a solution of mullein, whey, soda ash, ash infusion, decoction of tansy, nettle and wormwood.

Downy mildew , or downy mildew , covers the upper side of cucumber leaves with yellowish and brown spots, after which they quickly dry and twitch with a whitish coating. High humidity promotes the development of the disease.

Control measures: at the first signs of the disease, you need to add 1 liter of low-fat milk and 10 drops of iodine to 9 liters of water, stir well and treat the plants with this composition on the leaves. Garlic infusion and a solution of 2 g of potassium permanganate in 10 liters of water are also used for spraying cucumbers. Among the chemical preparations against peronosporosis, fungicides HOM, one percent Bordeaux mixture, Topaz and others are effective.

Gray rot It affects the stems, leaves and flowers of cucumbers, on which, after infection, watery spots and a fluffy gray coating appear. When infection penetrates the flower, the embryo dies. The development of gray rot is provoked by waterlogging of the soil and too dense planting.

Control measures: plants are treated several times, at intervals of three days, with a solution of 75 g of soda in 10 liters of water. Among the fungicides used for spraying bushes, Alirin-B, Horus, and one percent Bordeaux mixture are used.

White rot covers the ground organs of cucumbers with a slippery white film, under which rotting begins.

Control measures: plants are treated leaf by leaf with a solution of fluff lime or a solution of 2 g of copper sulfate and 10 g of urea in 10 liters of water.

Root rot damages both seedlings and adult plants: part of the root system of the bush dies, the neck is affected, the stem becomes thinner, and the plant dies. The disease progresses on heavy soils, and especially if the cucumbers are watered with cold water. Sudden temperature changes also contribute to the development of the disease.

Control measures: the lower part of the plant is cleared of soil, diseased areas are removed, the cuts are treated with coal powder, the beds are sprinkled with dry bleach at the rate of 150-200 g per 1 m², after which the powder is embedded into the soil with a rake. Among folk remedies against root rot, an aqueous solution of iodine and milk is used. The drugs Fundazol, Colfugo Super and Fitoflavin 300 are effective in the fight against root rot.

Anthracnose determined by rounded yellow-brown spots on the leaves, which in conditions of high humidity become covered with a pinkish coating. Ulcers form in these places, cucumber leaves wrinkle and darken. If it rains or dew falls, the disease penetrates the root system and quickly destroys the plant.

Control measures: cucumber bushes should be treated several times a week with one percent Bordeaux mixture (last treatment no later than 4-5 days before harvest) or a suspension of bleach (30-40 g per bucket of water) with a frequency of 10 days (last once - three weeks before harvest). Locally affected areas are treated with a solution of copper sulfate.

Cladosporiosis , or olive spot , usually affects green plants and only sometimes appears on the leaves and stems of the plant. The disease covers the fruit with many small watery spots, which gradually increase in size and harden, the skin bursts, the fruit becomes deformed, and the ovaries die. The infection spreads by air, as well as during rain or watering.

Control measures: It is recommended to grow varieties resistant to cladosporiosis. If an infection occurs in the greenhouse, it is necessary to reduce the humidity of the air and soil and fertilize the cucumbers with potassium sulfate. The fungus is destroyed by treating the plants with Bordeaux mixture or a solution of 40 g of copper sulfate in 10 liters of water with the addition of a small amount of liquid soap.

Fusarium wilt first it destroys the tops of the shoots, then it spreads to the leaves and root collar of the bush. If the development of fusarium is not stopped, the bush may die in two days. Fusarium develops against a background of high humidity.

Control measures: for preventive purposes, seeds should be treated with a fungicide or potassium permanganate solution before planting. A week before planting, the soil is watered with a solution of Fitosporin M or Trichodermin. Chemical preparations, as well as folk remedies, have great difficulty in dealing with fusarium, so it is better to prevent this infection from appearing on cucumbers.

Viral diseases of cucumbers

Ordinary mosaic appears on cucumber leaves as light green spots. As the disease progresses, the leaves become corrugated. The virus spreads through contaminated seed, so seeds must be disinfected before sowing. For preventive purposes, bushes should be sprayed with a light pink solution of potassium permanganate.

Field mosaic carried by sucking pests. The leaves of affected plants wither and fall off very quickly. For preventive purposes, cucumbers are sprayed with a solution of Fitosporin.

White and green mosaic mosaic First he paints the cucumber leaves, and then starts working on the greens. The virus is transmitted by sucking pests - aphids, whiteflies, scale insects, mealybugs, thrips and spider mites, and the disease progresses in conditions of high humidity. As a preventive measure, you should regularly weed out the weeds, from which carriers can come to the cucumbers, and the bushes should be watered at the roots with warm water. Sudden temperature changes should not be allowed in the greenhouse.

The danger of viral diseases is that there are no drugs for them, so you just need to exclude the possibility of viruses developing on your cucumbers. How to do it? Follow agricultural practices, disinfect seed and soil before planting, plant seedlings according to a developed scheme so that the plants do not suffer from crowding, and provide timely care for cucumbers.

How to spray cucumbers against diseases for a good harvest

A sufficient amount of sun, regular watering, fertile soil and the absence of pests and diseases are the key to a rich harvest of cucumbers. But often even experienced gardeners have questions about how to spray cucumbers against diseases, what preparations to use for feeding and in what quantities. Let's consider folk remedies that are used for the prevention and treatment of the most famous cucumber diseases.

Treatment of cucumbers against diseases

Cucumbers are most susceptible to fungal diseases. Among them are powdery mildew, root and gray rot, and bacteriosis. The danger of these diseases is that they affect several vital parts of the plant at once, which leads to a decrease in yield or to the death of plants. Let's consider publicly available folk remedies that can be used for treatment and prevention.

Treatment with iodine for root rot

The causative agents of root rot are fungi that live in the soil and reproduce in high humidity. Rot manifests itself after planting seedlings in browning of the roots, yellowing of the lower leaves, and death of the ovaries. Regular pharmaceutical iodine will help to cope with root rot.

Treatment of cucumbers with iodine is carried out with a dilute solution: iodine is mixed with cool water in a ratio of one to two and the plant stems are lubricated 10-15 cm from the ground. Treatment is carried out every 3-4 days until the signs of the disease disappear.

Treatment of cucumbers with milk and iodine is considered effective. To prepare the product, take 1 liter of milk, kefir or whey, 1 tablespoon of crushed laundry or liquid soap and 30 drops of iodine per 10 liter bucket of water. Cucumbers are sprayed with the prepared solution once every 10 days.

Gray rot is a bacterial disease that affects all plant organs. It appears in the form of gray or brown spots, which increase in size over time and completely cover the leaves, fruits and stems with a gray coating. Large amounts of moisture contribute to the development of the disease. Kitchen soda helps to deal with gray rot.

Treatment of cucumbers with soda is carried out with a weak solution (75 g of soda is dissolved in a 10-liter bucket of water). Plants are sprayed every three days.

Treatment of cucumbers with trichopolum against bacteriosis

Bacteriosis of cucumbers or angular spot appears in conditions of high humidity in open beds and in greenhouses, manifests itself in the form of brown angular spots on leaves, cotyledons and fruits. The disease is especially dangerous during the flowering period of cucumbers.

To treat plants, spraying and watering with a trichopolum solution are used. For spraying, dissolve two tablets of the drug in 1 liter of water; for watering, use five tablets per 10-liter bucket of water. As a preventive measure, before planting, a Trichopolum tablet is placed in the hole, and a few days after planting, it is sprayed with a freshly prepared solution.

Treatment of cucumbers with brilliant green against downy mildew

Downy mildew or downy mildew is one of the most dangerous fungal diseases of cucumbers. The first symptoms most often appear during flowering and fruiting in the form of yellowish-green spots on the upper part of the leaf and a gray coating with a purple tint on the lower part. Over time, the spots increase in size and the leaves become brittle and crumble. As a result, the development of fruits slows down, already ripe fruits lose their taste.

The danger of downy mildew is that fungal spores can remain in the ground for several years and infect plants every year. For treatment, use brilliant green. Thanks to the copper contained in the preparation, the solution not only acts as an antiseptic, but also feeds the cucumbers.

The healing qualities of brilliant green

Few people know that damaged cucumbers can be stored. If the skin of the fruit is slightly damaged by a disease or pest, carefully treat it with brilliant green. If there is surface rot or mold, it must first be cut out. A wound treated with brilliant green is covered with a film and the fruit can be stored for several months.

Treatment of cucumbers with brilliant green is carried out with the following solution: 50 g of urea, 2 liters of whey and 10 ml of brilliant green are dissolved in a bucket of water (10 l), and sprayed once every 10 days. As a preventive measure, spraying is repeated three times a season after the start of flowering, once a week.

Feeding cucumbers

Cucumbers, like any plants in the garden beds, need fertilizing. We recommend using root fertilizers (adding nutrients to the soil, under the roots); their effectiveness is much higher due to the rapid penetration of substances into the root system. Foliar feeding (spraying) is important in preventing diseases and the spread of insects.

Feeding cucumbers with iodine

In addition to its powerful antiseptic effect, iodine, even in small quantities, accelerates metabolism and stimulates plant growth, increases the yield and taste of fruits, and promotes the accumulation of vitamin C.

To feed, add a few drops of the product to the settled water for irrigation. Watering cucumbers with iodine is also a preventive measure against the development of powdery mildew and root rot.

Iodine can be used with milk or whey. To do this, dissolve 30 drops of alcoholic iodine and 1 liter of milk in a bucket of water and leave to infuse. Watering cucumbers with milk and iodine is carried out every 10-14 days.

Feeding cucumbers with brilliant green

It is worth treating cucumbers with brilliant green not only when yellow or brown spots appear on the leaves of cucumbers, but also as a preventive measure. For spraying, add 5 ml of brilliant green (the contents of half the bottle) to a bucket of warm water.

In addition to fighting diseases, fertilizing with brilliant green promotes the accumulation of copper in the soil, which is especially important for areas in swampy areas. This microelement improves plant metabolism, promotes the formation of chlorophyll, and accelerates fruit development. To prepare a solution, add 10 drops of brilliant green to 10 liters of cold water. Water the cucumbers once every 2 weeks after the first leaves appear.

Feeding cucumbers with soda

Baking soda is one of the most useful and affordable cucumber fertilizers. It protects plants from fungal diseases, microbes, insects, increases productivity and improves the taste of fruits.

Cucumbers are treated with soda to prevent the appearance of aphids and the development of powdery mildew. To prepare the product, add 1 tbsp to 5 liters of warm water. l. vegetable oil, 1 tbsp. baking soda and 1 tablet of acetylsalecic acid (Aspirin-S). Spray the prepared solution once a month after sunset or in cloudy weather, due to the likelihood of the plant getting burned.

Watering cucumbers with soda begins when barren flowers appear on the ovaries. To prepare the mixture, dissolve 2 tablespoons of soda in 10 liters of water and water the cucumbers once every few days.

Bottom line

Processing cucumbers with iodine, milk, soda and brilliant green is very popular due to the availability of ingredients and a wide spectrum of action. Few store-bought products can boast of simultaneously feeding and protecting against diseases. Using folk remedies in the right proportions will help you grow a magnificent harvest and save on the purchase of expensive drugs.

Last time in the Smart Garden section we told you how to grow cucumber seedlings at home. But after planting the seedlings, cucumber days begin, when our lovingly nurtured plants are attacked by diseases and pests. Today our conversation is about how to protect cucumbers from diseases and get a high yield. There may be several reasons why cucumber leaves turn yellow.

1. Lack, excess or incorrect frequency of watering. Insufficiently fertilized soil. Lack of fertilizing. Incorrect crop rotation.

As a result, plants weaken, immunity and resistance to various types of fungi and pests decrease. There are effective folk recipes for treating cucumber tops to prevent yellowing.

Recipes for processing cucumbers and protecting against diseases

1. After the crop has sprouted and 3-4 leaves have appeared, you can begin treatment with the following composition: 30 drops of iodine per bucket of clean water, a liter of milk and 20-30 grams of soap. It is recommended to carry out such spraying once every 10 days.2.

Soak the loaf of bread in a bucket of water for 12 hours (you can do it in the evening), knead the bread thoroughly, add the contents of a small bottle of iodine. Pour the resulting solution into glass bottles, seal and store in the basement or other cool place.

Once every two weeks, treat cucumbers with a solution of this mixture at a concentration of 1 liter of composition per bucket of water. With regular spraying, the tops will remain green until autumn.3. Take a liter of whey for 5 liters of water.

Treat cucumber leaves with the solution on all sides.4. To make the ovary appear again on cucumbers and peppers, you need to pour 2 liters of whey into a bucket of water and dissolve 150 grams of sugar.5.

Pour 10 liters of water into onion peels (jar volume 0.7 liters), boil for 1 minute, cover with a lid and let steep for 12-15 hours. Afterwards, strain the liquid, squeeze out the pomace, and let it settle properly.

Pour 2 liters of infusion into 8 liters of water and thoroughly and thoroughly treat the plants on all sides, spray and water the soil with the solution. Please note that when watering, it is advisable not to spray drops on the tops of cucumbers, as in the hot sun this can lead to burns of the leaves. At least once a week you should loosen the compacted soil under the plants.

Watering with very cold water is not advisable. Mila Nabogova, especially for Smart Tips Smart tips wish you a wonderful harvest! And if you have a lot of cucumbers, use our preparation recipes.

Diseases of cucumbers in a greenhouse - how to prevent and how to treat

11/26/2014 by Natalya | no comments The main sources of any cucumber disease in a greenhouse can be seeds, soil, film, and greenhouse structures. It is impossible to ensure complete plant protection without preventive measures and the integrated use of biological and chemical protection agents. In this article we will get acquainted with biological products that will protect our cucumbers in the greenhouse from diseases, the rules for cultivating soil, seeds, and greenhouses to protect plants from diseases.

Greenhouse treatment after harvest

The health of plants and the prevention of any disease of cucumbers in the greenhouse in the next season must be taken care of in advance - when liquidating plants in the previous rotation. Before removing old fruit-bearing plants, which are carriers of a whole “bouquet” of diseases and pests, it is necessary to spray them with a mixture of fungicides, disinfectants preparations, insecticides (for example, Bayleton + Farmayod-3 + Actellik) or use “Climate” or “Fas” blocks for disinfection at the rate of 1 block per 10-20 m3 of greenhouse. The question may arise: why treat cucumber vines that are are they thrown out in any case? Elimination treatment is necessary to destroy the breeding ground for diseases and pests, which in the next turn or season will find a way to “fly” into the greenhouses for new plantings. After removing old plants, it is necessary to thoroughly clean the greenhouse of weeds, plant debris and treat the structures and perennial film disinfectant Farmayod-3 (100-200 ml per 10 liters of water). Treatment of half-dried cucumber plants, disinfection of structures, and removal of plant residues will save significant funds, which can be spent on treating plants in the next season.

Preparing cucumber seeds for sowing seedlings

Very often, untreated seeds are the source of infections that quickly spread in the soil. The consequences of the development of some seed infections can manifest themselves in the process of growth and development of cucumbers: wilting of plants, spots on leaves, fruits, general loss of yield. In creating a barrier and counteracting the development of pathogens, dressing cucumber seeds with biological preparations Alirin-B + Gamair (5 tables. + 5 tablets per 1 liter of water).

Growing seedlings

Healthy, strong seedlings are a very important stage for the formation of a good harvest of cucumbers. Since any substrate contains pathogens of plant diseases, to create conditions for normal starting development, before sowing in a seedling pot with a volume of 300-800 ml next to the seed (2-3 cm), it is necessary to add 1 tablet of Glyocladin - a biofungicide based on the trichoderma fungus. Simultaneously with the growth of the root, “cobwebs” of the fungal mycelium will begin to grow, which will gradually fill the entire volume of the seedling pot and displace pathogens. It is important to correctly introduce the tablet into the soil: make a small depression, put the tablet in a damp substrate, and sprinkle. After this, approximately 5-7 days will pass - water the seedlings with a solution of Alirin-B + Gamair preparations (2 tablets + 2 tablets per 10 liters of water) at the rate of 30-40 ml of the prepared solution per 1 seedling pot. Use of a complex of biological products at the growing stage seedlings is a reliable means of preventing and treating cucumber diseases, primarily root rot.

Preparing the soil before planting seedlings

The soil in a greenhouse is capable of accumulating enormous amounts of pathogens. Soil disinfection is perhaps the most difficult, expensive stage in measures to prevent and protect the future harvest, but measures to prepare the soil pay off by reducing pesticide treatments during rotation and by increasing the overall yield. To disinfect the soil before planting, you can water the soil with a solution of the following drugs: Farmayod-3 (100 ml per 10 l of water) or 5-10 percent hydrogen peroxide (0.5-1 l per 10 l of water).

The consumption of the working solution of the preparations is 1-2 l/m2. After disinfecting the soil, it is necessary to fill the space free from pathogenic microorganisms with beneficial soil microflora. 1-3 days before planting the seedlings, the drug Trichocin, SP is added at the rate of 30 g per 500 m2. The drug is applied by spraying or watering the soil (you can use drip irrigation), followed by tillage of the soil with a hand cultivator or walk-behind tractor (if the greenhouse is large) to a depth of 15-20 cm. The drug is quickly distributed through capillaries throughout the entire volume of the beds. Active growth of the soil fungus Trichoderma helps fill free space, leaving no opportunity for the development of soil pathogens of plant diseases.

Prevention of cucumber diseases and their protection during the growing season

Preventive measures to protect cucumbers from major fungal and bacterial diseases begin from the moment the seedlings are planted. Planting seedlings in a permanent place is severe stress for plants, caused by a sudden change in conditions. Any stress leads to a decrease in the plants’ own immunity - at this moment they are most vulnerable and susceptible to infection by pathogenic microorganisms. To prevent infection and increase immunity, it is recommended during or after planting to water the plants with a mixture of Alirin-B + Gamair (2 tables + 2 table per 10 liters of water) with a working solution consumption of 10 liters per 10 m2. For drip irrigation, the norm of Alirin-B and Gamair preparations is 20 tablets each. per 100 m2. The effectiveness of biological products will increase if the immunomodulator Ecogel, BP (100 ml per 100 m2) or Narcissus N (100-120 ml per 100 m2) is added to them. 25-30 days after planting, it is necessary to repeat the application of Ecogel or Narcissus biological products N, increasing the norm of Alirin-B and Gamair to 30 tablets. per 100 m2. Subsequent application after 25-30 days is carried out with a consumption of biological products of 30-40 tablets. per 100 m2. This sequence of application will help maintain high plant immunity and create the constant presence of a beneficial bacterial culture in the root zone.

Biological products for the prevention and treatment of cucumber diseases, their properties

Alirin-B (in tablets) is a long-acting bacterial preparation, a biological fungicide. Effective against root rot, wilting of various natures, ascochyta blight, anthracnose, powdery mildew, and other fungal diseases of cucumbers. Gamair (in tablets) is a long-acting bacterial preparation, a biological bactericide.

Effective against bacterial rot and some types of phytopathogenic fungi. Glyocladin (in tablets) is a microbiological fungicide against root rot pathogens. It is highly effective against fusarioses, which develop well in soils rich in organic matter. Trichocin, SP (trichodermin) (powder) is a microbiological fungicide created on the basis of a soil fungus antagonist of the genus Trichoderma.

The drug prevents the development and spread of root rot pathogens. All biological products, after dissolving in water, can be applied through drip irrigation systems or any type of sprayers. In the working solution, biological products are compatible with mineral fertilizers for foliar feeding, growth regulators, humates, and insecticides. The shelf life of biological products is 2-3 years.

Main diseases of cucumbers

Root rot - prevention and treatment

The difficulty of dealing with cucumber root rot is due to the fact that it is usually a mixed (fungal and bacterial) infection. Preparations for treatment must have fungicidal and bactericidal activity. When plants wilt from root rot, it is necessary to use double doses of Alirin-B and Gamair (40 tablets per 100 m2 of each biological product). In case of severe wilting, it is necessary to water the roots with chemical pesticides according to the following scheme: Previkur (15-20 ml per 10 l of water), after 3-5 days, water with Fitolavin, VRK (15-20 ml per 10 l of water). After application When using Fitolavin, both pathogenic organisms and beneficial microflora are destroyed, so it is necessary to water with Alirin-B and Gamair biological products (20 tablets per 100 m2 of each biological product).

Prevention of ascochyta blight and gray rot of cucumber

Preventive measures must be started even before the first signs of the disease appear: spraying the leaves with a mixture of biological products Alirin-B + Gamair (10-20 tablets + 10-20 tablets per 10 liters of water). The causative agent of ascochyta blight primarily affects weakened plants, so for prevention, it is effective to spray plants with growth regulators Epin (2 ml per 10 liters of water), Ecogel (100 ml per 10 liters of water), starting from growing seedlings. If obvious signs of disease appear, in addition to the use of biological products, it is effective to spray with Strobi (15-20 ml per 10 l of water) or Quadris (5 ml per 10 l of water). To combat gray mold, the affected stems are coated with a mixture of Rovral and chalk (diluted to the consistency of sour cream) in a ratio of 1:2.

Prevention, treatment of powdery and downy mildew

The use of biological products before the first signs of disease appear can delay the onset of plant damage as much as possible. Spraying plants with a mixture of biological products Alirin-B + Gamair (10-20 tablets + 10-20 tablets per 10 liters of water) + 10 g per 10 liters of urea + Ecogel, BP (100 ml per 10 liters of water) or Narcissus B (50 ml per 10 liters of water) is not only a good prophylactic agent, but can also be used to treat the disease when the first signs appear. Of the chemical agents against powdery mildew, treatments with Quadris preparations are effective ( 5 g per 10 liters of water). Topaz (5 g per 10 l of water), Tiovit Jet (20-30 g per 10 l of water). Against downy mildew (peronospora) in the summer-autumn period you can use Quadris (5 g per 10 l of water), Ordan (30 g per 10 liters of water), Previkur Energy (20 g per 10 liters of water). A modern plant protection system in greenhouses cannot be imagined without the use of biological products: their biological effectiveness when used according to the recommended technology is high.

Proper use of drugs can be an alternative to the use of chemical means of protection. In favor of the use of biological products in the plant protection system are such important qualities as high efficiency in the absence of the possibility of “accustoming” to the action of biological products in pathogens of cucumbers.

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Scheme for treating cucumbers against diseases and pests

Is it possible to grow cucumbers in your garden without using chemicals? Can. Or you may be left without a harvest.

It depends on your luck. The photo shows a picture of how in our area that year, almost everyone’s cucumbers “burnt” in their gardens within a day or two.

Acquaintances, owners of private household plots, who grew cucumbers for sale and decided to do without chemicals this time, had the same story - they were left without cucumbers. In any case, the question of using chemical treatment of cucumbers with insecticides and fungicides is up to the owner of the personal plot or dacha. Cucumbers , like tomatoes, are very often exposed to various pests and diseases. Below are recommendations from plant protection specialists for processing cucumbers.

The timing and phenophase of plant development may differ for different regions of our vast Motherland. Processing times are given for the northern zone of the Krasnodar Territory and the south of the Rostov region.

So make adjustments. So, with what (which preparations) and when to spray cucumbers grown in open ground and greenhouses: March – seedling preparation: dressing seeds with manganese before sowing April – planting seedlings: extermination of mole crickets before sowing cucumbers - with Medvetox or other drugs to combat this pest May – before flowering: feeding with fresh manure. After flowering: spraying with Abiga Pik or Ridomil, or Oxyx + Actellik - against pests June – growth of cucumber fruits, ripening: Abiga Peak, Ridomil, Oxychom + Fitoverm July – fruit growth, ripening: Abiga Peak - 20 days before harvest This concerns the first (spring) planting of cucumbers. For repeated plantings in July-August, treatment is carried out in accordance with the phenophase of plant development.

Measures to prevent various diseases when growing cucumbers

• compliance with crop rotation

Diseases and pests of cucumbers

Cucumber diseases

The most common diseases of cucumbers are downy mildew (peronosporosis), powdery mildew, root rot (fusarium), brown (olive) spot, gray rot, anthracnose, ascochyta blight, bacteriosis, etc. Downy mildew- the most common and dangerous disease of cucumbers.

It can appear at any stage of plant development, but mainly appears during the fruiting period, around the beginning of August. When downy mildew disease occurs, multifaceted green oily spots appear on the leaves of plants.

These spots increase in size within 8-10 days, then the leaves turn brown, as if the plant had been burned, and dry out after 2-3 days. The cause of the disease is the presence of fungal pathogens in the soil, which develop intensively when watering plants with cold water, as well as when there is high air humidity in the greenhouse and the presence of water condensation on the film.

This most often occurs when there are large differences in air temperature between day and night (24-25°C during the day, and 10-14°C at night) and insufficient ventilation of the structure. At the first signs of the disease, immediately stop watering and fertilizing and do not carry them out for 6-7 days.

Plants are sprayed with a solution of polycarbacin or copper oxychloride. In this case, take 1 tablespoon of polycarbacin or 40 g of copper oxychloride per 10 liters of water. The treatment is carried out with a solution having a temperature of 24-25 °C.

Good results are obtained by spraying cucumbers with a whey solution (3 liters of whey and 1 teaspoon of copper sulfate per 7 liters of water). You can spray plants with pure serum.

After the treatment, you need to ventilate the greenhouse and for 6-7 days try not to let the temperature drop below 20-25°C during the day, and 18-22°C at night. To do this, it is recommended to install a second film shelter in the greenhouse at night, and additionally cover the plants with film, burlap or other materials in order to ensure the specified air temperature in the building.

After harvesting, the greenhouse, soil in the beds and plants must be treated with a solution of copper sulfate (3 tablespoons of copper sulfate per 10 liters of water). After a day, all plants with roots must be removed from the beds and burned.

To prevent the disease, it is not recommended to grow cucumbers in beds where pumpkin crops - cucumbers, zucchini, squash, etc. - were grown the previous year. At the stage of growing cucumber seedlings and at the very beginning of fruiting, preventative spraying of plants can be carried out to prevent downy mildew.

The most effective remedy for this is Rizoplan (take 2 tablespoons of the drug per 10 liters of water). Powdery mildew also a very common disease of cucumbers.

When powdery mildew disease occurs, rounded white spots appear on the leaves of plants, which subsequently increase in size and merge, and the leaves become covered with a white powdery coating. Then they become light or yellow-green, wrinkle, darken and dry out.

As a result of this, the plant dies. Powdery mildew most often occurs when cucumbers are grown in the same place where the infection of this disease accumulates.

When the air temperature drops and the plants are watered with cold water, the fungi that are the source of the disease multiply quickly and the disease spreads throughout the entire garden bed. When the first signs of the disease appear, you must immediately spray the plants with a solution of mullein or potassium permanganate.

For 10 liters of water take 1 liter of mullein and 1 tablespoon of urea or 1.5-2 g of potassium permanganate. The solution is thoroughly mixed, filtered and sprayed onto the leaves on both the upper and lower sides, as well as plant stems.

Treatment is carried out 2-3 times per season early in the morning or in warm weather in the evening. Spraying cucumbers with a solution of sulfaride paste also gives good results. For 10 liters of water take 2 tablespoons of the drug.

Spray the plants 2 times per season with an interval of 6-7 days. c Another way to combat powdery mildew is to pollinate plants with ground sulfur. To do this, finely ground sulfur is poured into a bag made of three-layer gauze, and the plants are pollinated during the day in sunny weather at a temperature of 23-28 ° C.

At the same time, for 10 sq.m. The area of ​​the bed consumes 30 g of sulfur. When treating plants with gray, doors, windows and transoms in the greenhouse are closed, and plants grown in shelter or in open ground are covered with film for 2 hours after treatment.

Many vegetable growers use a folk method of combating powdery mildew. Collect and cut into a common container nettle, dandelion, plantain, coltsfoot, fireweed, chickweed, and celandine. Then mix everything, take 5-6 d of this mixture and fill it with two to three liters of hot water at a temperature of 60-70°C.

The mixture is thoroughly ground, mixed and added with water to 10 liters. After 1-2 days, filter the solution, add 1 tablespoon of urea or 1 g of potassium permanganate and 2 tablespoons of liquid soap. The resulting solution is sprayed on plants 2 times per season with an interval of 6-7 days.

Root rot cucumbers appear when watered with cold water and with a sharp drop in soil temperature. The disease spreads especially quickly when using soil on which cucumbers or other pumpkin crops have already been grown.

Root rot also appears when seedlings are planted incorrectly - when plants are buried deep during planting or when they are heavily hilled. Signs of the disease include premature wilting of leaves, yellowing and cracks on the lower part of the stem.

To prevent the disease, it is necessary to strictly follow the rules for planting seedlings and not to cover the plant stem from the roots to the cotyledon leaves with soil, and not to hill the plant stem too high. If a disease is detected, you need to rake the soil from the stem to the very roots of the plant, make sure that it does not cover the diseased part of the stem, and also treat the stems with one of the following compounds.

For 1 liter of water take 2 teaspoons of either copper sulfate, or copper oxychloride, or polycarbacin and 6 tablespoons of either chalk, or wood ash, or fluff lime. Mix everything thoroughly. With this solution, using a brush, moisten the stems of diseased plants from the roots to a height of 12-15 cm.

Plant stems can also be powdered with wood ash, crushed charcoal or chalk and then dried. When watering, you need to make sure that water does not fall on the stems of diseased plants; water only with warm water at a temperature of 24-25°C.

Dead plants are dug up along with the root and soil clod and burned. The soil is watered with a solution of copper sulfate (take 2 tablespoons of copper sulfate per 10 liters of water).

Brown (olive) spot appears on cucumbers when watering with cold water (and the plants, not the soil), with increased air humidity in the greenhouse, with frequent drops in air temperature to 10-13°C, as well as with drafts in the greenhouse. Signs of the disease are brown sores with fluid secretion that appear on the fruits.

Subsequently, the sores cover the entire fruit and it becomes unfit for consumption. If appropriate measures are not taken, the plant dies 6-7 days after the disease.

At the first signs of the disease, it is necessary to stop watering and fertilizing for a period of 5-6 days, on warm days, ventilate the greenhouse, remove the frames from the greenhouse or the film from the shelter frame. On cool days, carefully close the doors, vents and transoms in the greenhouse, cover the greenhouse with frames, and cover with film.

It is advisable to additionally cover the structures in order to raise the air temperature in them - during the day to 20-25°C, and at night to 18-20°C. In addition, plants and fruits are sprayed with a one percent solution of Bordeaux mixture (take 100 g of copper sulfate and 10 g of lime per 10 liters of water) or a solution of polycarbacin or copper oxychloride.

To prepare a solution for 10 liters of water, take 1 tablespoon of the drug and 2 tablespoons of liquid soap. Spraying is carried out in the morning in warm weather 2 times per season with an interval of 5-6 days. After spraying, the structure is ventilated.

Gray rot appears on cucumbers at low night temperatures, when watering with cold water, poor ventilation of the structure and dense plants. Signs of the disease are slimy gray spots on the stems and leaves of plants, especially in the leaf axils.

When plants become dense, a large number of male flowers appear on them, which after a few days wither and rot, affecting the stems of the plants. To prevent gray rot, it is necessary to avoid watering cucumbers with cold water, ventilate structures in a timely manner, and prevent the plants from becoming crowded.

If there are a large number of barren flowers on the plant, they should be removed after flowering, and the areas damaged by rot should be sprinkled with wood ash or crushed charcoal. If gray rot is present on plants, they are treated with a mixture of wood ash and copper sulfate.

For 1 cup of ash, take 1 teaspoon of copper sulfate, mix thoroughly and sprinkle on areas of plants damaged by gray rot. If the disease progresses, the affected shoots and leaves are cut off and burned.

The main pests of cucumbers are melon aphids, spider mites, greenhouse whiteflies, sprout flies, etc. melon aphid is the most harmful for cucumbers and zucchini, it damages shoots, flowers, ovaries and the underside of leaves, causing them to wrinkle and curl.

The melon aphid has an oval shape, its length is 1.2-2.1 mm. At first, the aphid is yellowish and then dark green. Aphids appear in the second half of summer.

It multiplies very quickly, a few days after emergence it envelops the entire underside of the leaves, as well as flowers and ovaries. To combat melon aphids, it is necessary to destroy all weeds on the site, promptly remove plant debris, *since aphids move to cucumbers mainly from weeds.

When aphids appear, plants are sprayed with an infusion of red hot pepper and tobacco dust. For 10 liters of hot water at a temperature of 60°C, take 30 g of fresh chopped capsicum or 5-10 g of dry red pepper and 200 g of tobacco dust and infuse this solution for 24 hours.

Then the infusion is thoroughly mixed and filtered, 2 tablespoons of liquid soap and 2-3 tablespoons of wood ash are added to it. The resulting composition is sprayed on the plants, spending 1-2 liters per 1 m2 of bed area, depending on the number of aphids.

In this case, the stems, the upper and, especially, the lower surface of the leaves are treated. Spraying is repeated after 6-7 days. To combat aphids, cucumbers can also be sprayed with a solution of wood ash. For 10 liters of water take 1 glass of wood ash and 2 tablespoons of liquid soap.

The ash is poured with hot water and infused for 24 hours, then liquid soap is added, the infusion is filtered and the plants are sprayed with it in the same way as in the previous case. The treatment is carried out in the evening in warm, calm weather.

An effective remedy against aphids is spraying cucumbers with a solution of karbofos. For 10 liters of warm water at a temperature of 30° C, take 1-2 tablespoons of karbofos. Plants are sprayed with a solution of weak concentration, and only the frame and paths inside the structure, as well as film and soil in the beds are sprayed with a solution of strong concentration; it is not recommended to treat plants with it. The treatment is done in the evening in sunny weather.

In this case, doors, windows and transoms in the greenhouse must be closed. 1-2 hours after treatment, the soil in the beds is loosened to a depth of 1-2 cm, trying not to damage the roots of the plants.

In addition to the indicated means, to combat aphids, spraying plants with infusions of various insecticidal (insect-killing) plants is used: henbane, creeping mustard, datura, dandelion, potato and tomato tops, garlic, onion peels and onions. To do this, take 10 liters of water: a) 1 kg of dry last year’s leaves or 0.5 kg of fresh henbane leaves with the addition of roots and infuse for 12-15 hours; b) 1-1.2 kg of dry bitter herb and infuse for 24 hours; c) 1 kg of dry datura plants is boiled in a small amount of water, filtered, and water is added to 10 liters; d) 0.4 kg of fresh dandelion leaves or 0.2-0.3 kg of crushed roots are infused for 2 hours, add 1 teaspoon of pepper and mustard; e) 1 kg of green or 0.6-0.8 kg of dry potato tops, add 5-10 g of ground red pepper, leave for 3-4 hours and use immediately after that; f) 0.5 kg of tomato shoots are passed through a meat grinder, poured with warm water at a temperature of 30-35 ° C, left for 3 hours, filtered, and 1 teaspoon of ammonium nitrate is added; g) 1.5 cups of crushed garlic (washed in salt water and minced through a meat grinder) and 5-10 g of ground red pepper, infused for 5-6 hours, filtered through cheesecloth; h) 5 liters of onion peels are poured with hot water at a temperature of 70-80°C, 1 tablespoon of mustard is added, left for two days, filtered; i) 1 cup of chopped onion bulbs (passed through a meat grinder), add 1 tablespoon of soda ash, leave for 2-3 hours, filter.

Before use, add 2 tablespoons of liquid soap to all infusions. Spider mite damages cucumbers grown in greenhouses, greenhouses and shelters. It has an oval or oblong shape, its length is 0.3-0.4 mm.

Mites settle on the underside of leaves, entwining them with a thin web. Light dots first appear on damaged leaves, and then the leaves become spotted and dry out.

To combat mites, plants are sprayed with an infusion of various insecticidal plants or an infusion of red hot pepper and tobacco dust. Methods for using these agents are described above in relation to melon aphids.

Another pest of cucumbers and tomatoes is greenhouse whitefly, which sucks juice from plant leaves. In addition, sooty fungi appear on the sticky sugary secretions of the whitefly. The leaves turn black and dry out.

To combat whitefly, it is necessary to timely remove plant debris from the area and destroy weeds. In addition, to combat whiteflies, a mechanical method of exterminating them can be recommended.

To do this, glue traps are equipped and installed in the structure - pieces of plywood painted with white or yellow paint and smeared with some kind of adhesive: Vaseline, rosin with honey or castor oil, etc. The white or yellow color of the trap attracts insects, they land on they are glued. After this, the plywood is wiped down, and then again coated with adhesive and reinstalled.

Good results are obtained by spraying and washing plants with clean water, especially washing the lower parts of the leaves, where whiteflies accumulate in large numbers. Immediately after washing off the pests, loosen the soil to a depth of 1-2 cm and mulch the soil of the beds with peat, sawdust, sand or humus with a layer of 1-2 cm.