How to spray cucumbers for diseases in the open. Foliar feeding of cucumbers with urea, boric acid, calcium nitrate. To prevent the leaves of cucumbers from turning yellow, spray them with these compounds.

Powdery mildew on cucumbers - symptoms and control of it

Seeds should be disinfected prior to planting. Disinfect the greenhouse. Conduct soil disinfection.

When planting a plant, only the nutritious part of the root should be buried and not covered with the stem itself. During the summer, you should not sprinkle earth on the stem of the plant, and do not huddle. If you break this rule, the plant will die.

Used for processing and a solution of potassium permanganate,

Downy mildew: symptoms and ways to deal with it

Then there is a quick drying, for this it is enough

Leave for a day

Greenhouse whitefly (Trialeurodes vaporariorum Westw.)

As you can see, there are a variety of diseases in cucumber, and their treatment depends entirely on whether you follow the tips and recommendations above. However, fairly simple but effective preventive measures will help you avoid many problems in the garden.

Aphids on cucumbers - how to deal with aphids on cucumbers

The most dangerous for a cucumber is a disease such as ascochitis, which manifests itself in the form of drying out of the stems with the appearance of dark spots on them

Various pests of cucumbers and plant diseases cause gardeners a lot of trouble and problems. Pest control of cucumbers is an integral part of the job if you need a good and high-quality harvest.

Anthracnose or copperhead is a dangerous disease of cucumbers, which can destroy all plantings of cucumbers in a short period of time. Brown-orange spots appear on the leaf plate. On the underside, the leaf turns pink from the plaque that has appeared. The growth of cucumbers slows down, they shrivel and rot.

As we see cucumber diseases in the greenhouse, as a rule, arise from a sharp temperature drop. Therefore, make the construction of the room correctly (see Designs of greenhouses for cucumbers and the stages of cultivation), do not allow cracks and not the density of the joining of elements.

Spider mite on cucumbers

When the disease manifests itself, a medicine must be prepared: 1 teaspoon of copper sulfate should be added to 0.5 liters of water, or copper oxychloride, three tablespoons of honey, or wood ash should be used. Mix all this thoroughly.

1.5 grams are injected into 10 liters of water

2-3 days

After the expiration, stir and strain.

Gall nematode - worm-like pest of cucumber

- a wide polyphage damaging more than 60 plant species. But the pest inflicts especially great damage on cucumbers, it is very harmful for tomatoes, parsley, lettuce, celery, beans. Whiteflies and flower plants are especially affected - all types and varieties of fuchsia, pelargonium, heliotrope, salvia.

Most of the diseases and pests appear in the garden during flowering. Therefore, preventive treatment is best done when the plant is still developing - that is, at least a few leaves should appear on the bushes.

Photo gallery of sick cucumbers (click to enlarge):

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Diseases of cucumbers and their treatment - how to protect the garden from diseases?

Diseases of cucumbers and their treatment - the main diseases of vegetables

... This sore is transmitted by airborne droplets, and if you do not start the fight in time, literally in a few weeks ascochitosis will affect all crops, including ornamental plants. Have you encountered this disease? Here, pastes containing special contact preparations can help you, for example, Most often, plants are affected by the following diseases: powdery mildew, downy mildew or downy mildew, bacteriosis, ascochitosis, root rot or fusarium, gray rot, brown (olive) spot. Among insects, they are affected by aphids and spider mites. You can see these pests of cucumbers in the photo. Plants are susceptible to disease at sufficiently high humidity and air temperature. In dry air, cucumbers do not become infected. The anthracnose pathogen persists in the soil and infected plant debris. Cucumber seeds can be the source of the disease.When growing cucumbers in a greenhouse, diseases can in many cases be prevented by disinfecting the premises before planting.

After that, we rake off the earth from the stem of the plant to the root and process the stem with the prepared mixture using a brush, we process it from the root and to a height of 12 cm.

... People call this phenomenon "sour rain fell." But this is all speculation, the disease begins to develop with a sharp change in weather conditions, for example, a temperature drop, during the day +28, and at night +12.

After that, spraying can be carried out. In a closed greenhouse, many diseases can develop. Planting some crops in a certain place for a long time, and improper disinfection of the premises can lead to this. We want to tell you about some diseases of the cucumbers grown in the greenhouse. There is a lot of printed text and videos on this topic in the internet, we have selected the most common diseases and want to offer proven methods of their treatment.Whitefly is harmful not only because it sucks sap from plants, but also because it releases sugary substances on which sooty fungi settle, covering the leaves with a black coating and making them difficult to breathe. The growth of damaged plants slows down, photosynthesis is disturbed, leaves wither prematurely, and, accordingly, the yield is significantly reduced.

Preventive measures: RovralIf there is a white coating with fungal spores on the leaves and on the rest of the plant, then most likely these are signs of this disease. The affected plant stops fruiting, and the leaves dry out. Fruits can be misshapen and vulnerable to sunlight. They also contain less sugar. Powdery mildew appears on cucumbers regardless of whether the plant is grown indoors or outdoors. Mealy on cucumbers is often formed in warm and dry climates. If there are sharp fluctuations in humidity and temperature, then this contributes to the development of the disease. How to sprinkle cucumbers from disease and how to get rid of anthracnose? 1% Bordeaux liquid and 1% colloidal sulfur solution have proven themselves well. Of the fungicidal preparations, Quadris, SK are used.Have a nice harvest.

Crushed coal can also be applied to the places of manifestation of the disease. chalk, ash and dry well. When watering, try not to spray too much, water only the soil and you should be careful that the soil does not cover the infected areas.

What pests can attack your garden beds?

A reliable remedy for combating this disease is

The disease can begin with cold watering, or it may rain cold enough. The formation of condensate on the greenhouse film also contributes to the development. From this, cucumbers in the greenhouse can be constantly wet and when the temperature in the greenhouse drops to 12 degrees, the onset of the development of the disease can be expected.

A fairly effective method is the use of a solution in milk, for which we need 30 drops of iodine, a liter of milk and 20 grams of grated soap. All ingredients are thoroughly mixed, filtered, after which cucumbers are sprayed with an interval of 7-10 days.

Cucumbers: protection against disease and prevention

... The agent is applied to the affected area, while a small part of the healthy plant is captured.

To avoid infection, it is necessary to remove all plant sediments from the beds in a timely manner. In autumn, greenhouses and hotbeds should be disinfected. Their inner surfaces are processed with formalin.

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Pests of greenhouse cucumbers. How to fight

We fight aphids and whitefly - the main pests of cucumbers

Processing should be carried out in good sunny weather with closed doors and vents in the greenhouse. The air becomes suffocating enough, the aphid dies. If you want to use karbofos for treating plants, you should add 1 tablespoon of the drug to 10 liters of warm water.

First, a yellowish lesion occurs, followed by a dark green. Within a few days, the entire lower part of the leaf, flowers and leaves becomes ill.The adult insect lives for 25-30 days and during this time it can lay 60-530 eggs (depending on the temperature and relative humidity of the air, the type of plant on which it feeds pest). Usually, adults fly little. If disturbed, they rise into the air and immediately try to return to their original place.

If the cucumbers are struck by powdery mildew, prepare a solution of milk whey, which is heated to 25 degrees, diluted in 10 liters of water. This composition is suitable for spraying plants - the main thing is to treat not only sick, but also healthy plants.
Melon aphids on cucumbers

As soon as the first signs of powdery mildew are noticed, you will need to immediately apply fungicides - topsin or bayleton. Spraying is repeated if there are repeated signs of infection.

Olive spot or cladosporium appears at low night air temperatures of 10-13 degrees. Sprinkling cucumbers with cold water weakens the plants and makes them vulnerable to cladosporium disease.

This is also a disease of cucumbers in the greenhouse, which manifests itself as gray spots of the mucous structure. This is especially noticeable in the axils of the leaves at the branches. The spread of the disease occurs when the night temperature drops, the use of cold water for irrigation, thickening of planting and poor ventilation of the greenhouse.

... One ampoule is diluted to 8 liters. water at room temperature. Then they are thoroughly mixed and poured into a sprayer, a fine wash (mesh) is applied.

When you notice the first signs of the disease, you should immediately stop feeding and watering and do not do this for 7 days. After lowering the humidity in the greenhouse, spraying with such preparations as

When spraying, the lower part of the plant should be treated more thoroughly. Leave the room for an hour and then loosen the soil to a depth of 2 cm. When processing, do not damage the upper roots.

In the evening, whiteflies can make longer flights, but, having landed on a plant, they immediately hide in the leaves. Females lay eggs on the underside of young leaves, randomly or in groups of 10-20, often in the form of a ring. The eggs are cone-shaped, attached to the sheet with a wide base. Freshly laid eggs are greenish-yellow, after 2-3 days they turn black.Some diseases can appear very unexpectedly - in this case, an infusion of garlic will help you

How to deal with onion diseases

Downy mildew is a very common and dangerous disease. It can attack cucumbers at any stage of their development. But most often it manifests itself in early August, when the fruiting period begins. It is characterized on the leaves of the vegetable by multifaceted oily spots of green color. After eight to ten days, they become larger, later the leaves turn brown, as with a burn. After two to three days, they dry out.
Leaves and plants are affected first. Then oily formations appear on the cucumbers in the form of ulcers that penetrate the fetus. Cucumbers change color, become pale, lose their taste and presentation.

Powdery mildew affects not only cucumber plants, but also berry bushes, fruit trees. Cucumbers can get sick with powdery mildew if there are gooseberry or strawberry plantings nearby, affected by this disease.

When plants are densely planted, a very large number of male flowers appear. One leaf can contain up to 15 barren flowers. Which wilt quickly and affect healthy stems.
Spraying should be carried out at the first manifestations of the disease, but it is better to process before flowering, this will be prevention, which gives a good result. The first spraying can be carried out when 7-10 normal leaves appear.

"Topaz"

Measures for the control and protection of cucumbers from pests

There are also preparations of the type "Inta vir" and "Arrow", which also contain nutrients, that is, as a result of processing the plants are also fed with the necessary elements. Such preparations are harmless and environmentally friendly (for more details, see How to choose the right fertilizer for cucumbers).

Organizational and economic measures:

Control measures. Weeding and destruction of all the weeds on the site, this disease can only pass from weeds.
After 10-13 days, sedentary oval, pale yellow larvae, covered with short hairs, hatch from them. Immediately after leaving the eggs, they adhere to the leaf. After three molts, the larvae turn into nymphs, which after 12-15 days form into adult insects. Nymphs (sometimes called puparia) are flat, motionless, 0.8-1 mm long. Their body is highly chitinized and covered with waxy secretions in the form of threads.

Preventive control measures:

... It is prepared as follows: 50 g of garlic is passed through a garlic dish, the resulting gruel is diluted with water, poured into a glass jar and placed in a dark and warm place for a day. After 24 hours, the mixture must be filtered and filled with 10 liters of water. It is necessary to spray plants with this composition once every 10 days.
We recommend to read
The cause of the disease is fungal pathogens. They develop vigorously when plants are watered with cold water. And in the case when there is high humidity in the greenhouse. Water condensation can also be the cause.

Agrotechnical measures:

If you find olive spot, you should stop watering the cucumbers for several days. In greenhouses and hotbeds, arrange ventilation in warm weather.
Cucumber seedlings can get sick due to temperature changes, watering plants with cold tap water, high humidity.

Biological measures:

Do the processing of cucumbers both in the greenhouse and in the open field; you should choose warm and calm weather. This work is best done in the morning.
(One ampoule is diluted in a bucket of water 10 liters) or to process oxychoma (2 tablets are stirred for 10 liters of water).
This disease damages tomatoes and cucumbers, sucks juice from the leaves. In the process of the disease, white sugary discharge occurs, on which the formation of sooty fungi occurs, while the blackening of the leaves occurs and they dry out.
Spraying with infusion of red pepper should be carried out, for production use only fresh: it is necessary to cut

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Diseases of cucumbers in the greenhouse, causes and treatment methods

Development of one generation under optimal conditions (temperature 25 ~ 30 ° C, relative air humidity 75-80%) lasts 25-30 days.

Gives a high-quality result and ash solution, which is able to cope with many diseases. To prepare it, take a glass of ash, fill it with 20 liters of boiling water and insist for two days. After straining the composition, add 10 grams of laundry soap to it.

Melon aphid

Powdery mildew can also affect cucumbers, which manifests itself in the form of a grayish bloom first on the leaves of the plant, after which, growing, the disease creeps over the entire bush. As a result, cucumbers, like many other crops in your garden, will simply die. Having seen the first manifestations of the disease, process the cucumbers with mullein infusion: for 10 liters of a bucket of water, we take a liter of mullein and a spoonful of urea. We mix all the ingredients, filter, and in the evening we process the plants with it. If the mullein does not help, use a more powerful remedy - the drug

If there are signs of a disease, it is necessary to stop watering and not feed for a week. Plants should be treated with a solution of copper oxychloride or polycarbacin. The temperature of the solution should be twenty-four to twenty-five degrees. It is also useful to spray the cucumbers with a solution of milk whey. After finishing the treatment, the greenhouse is ventilated. Then, for a week, temperatures cannot be allowed below twenty to twenty-five degrees during the day, and eighteen to twenty-two at night. To do this, you can install an additional film shelter in the greenhouse at night. Or cover the plants with burlap or plastic.

Spray the leaves and fruits with a systemic contact fungicidal preparation Oxych or 1% Bordeaux liquid. Spraying is done through a spray device and immediately dry the leaves by opening the vents in the greenhouses.

An excess of nitrogen in the soil or a lack of calcium can also contribute to disease. The leaf plate is covered with a white bloom. If you do not take action, after a while all the foliage will be covered with a white layer, like flour. Hence the name of the disease - powdery mildew.

Control measures: Do not plant too densely. If there is a large amount of barren flowers, it should be removed, and the vacated places should be sprinkled with charcoal or wood ash.

You can fight this disease and more effective means "Zaslon", its three caps should be diluted in 1 liter of water.
In this case, the temperature of the solution should be from 22 * \u200b\u200bto 24 *. After work, the greenhouse should be thoroughly ventilated (see How to ventilate a greenhouse if it is not possible to always be nearby), but the temperature should not drop below 23 * during the day and below 18 * at night. For additional preservation of the body at night, you can cover the plants with foil, this will insulate and maintain the desired temperature.
30 gr. fresh paprika
The massive spread of whitefly is facilitated by the year-round use of greenhouses, constantly elevated temperatures and humidity. In open ground, the pest does not hibernate; it persists on green plants in greenhouses.
The cucumber plants in your greenhouse can be damaged by sucking poly-venomous pests such as aphids and whiteflies. They have a high biological potential for reproduction, and in favorable greenhouse conditions, their number increases very quickly, which leads to significant losses in yield.

Topaz After the harvest is harvested, the soil will need to be treated with a solution of copper sulfate. After a day, remove all plants and roots from the beds and burn. To the table of contents

In the early stages of plant disease, natural remedies can be used:

Do not water when a disease is detected, but immediately check all plants. When feeding and watering, do not direct water to the plants themselves.

Diseases of cucumbers in greenhouses are complemented by this disease. It appears when watering cucumbers with cold water by the rain method, with high humidity and frequent changes in temperature day and night.
This is a disease of cucumbers in the greenhouse and in the open field. It manifests itself in the formation of white plaque on the leaves. It spreads extremely quickly, and the leaves turn white (it seems like they were sprinkled with flour), after which they dry out, and the plant quickly dies.
Control measures: Diseases of cucumbers in the greenhouse are most often caused by weeds, so they should be eradicated throughout the area. It is necessary to cover all the doors and vents in one gauze layer, install glue traps.
Add tobacco dust 200 gr.

In order for the fight against aphids and whiteflies in greenhouses to be successful, it is necessary to carry out a set of protective measures: organizational and economic, preventive, agrotechnical, biological.

Aphids (Aphidae)

You should not grow these vegetables in the beds where pumpkin crops have recently grown.

White rot or sclerotinosis is one of the most dangerous diseases for cucumber. The disease is caused by a fungus that infects the plant at any stage of development. In the initial stages of the disease, a whitish bloom appears. Fruits soften, black dots appear. Infection occurs quickly and leads to the complete death of the plant.

Greenhouse whitefly

Processing of cucumbers with milk whey. The film covering the cucumber leaf, after applying the serum, prevents the spread of superficial fungal mycelium. Dissolve a liter of whey in a bucket of water. The spray solution must be at least 22 degrees. Sprinkle cucumber leaves on both sides.

This mixture helps well with illness:

It can also occur with a draft. All these factors lead to the weakening of plants. With poor disinfection of the roof and soil, pathogens remain.

Cucumbers should not be planted in the same area of \u200b\u200bsoil; a large number of pathogens of this disease accumulate at the sowing site. Their rapid spread occurs as a result of a decrease in temperature and when irrigated with cold water. The disease can also spread from weeds and flowers.

For this purpose, pieces of plywood are dyed white and yellow to attract insects. At the same time, plywood is lubricated with rosin with the addition of honey or castor oil, petroleum jelly.

Dilute in 10 liters of hot water 60 *.

Be sure to inspect the plants weekly for sucking pests, starting from the moment the seedlings are grown. Since these are very small insects and it is difficult to notice them in the initial stages of development, if possible, arm yourself with a magnifying glass;

Powdery mildew

- a large group of homoptera sucking insects, which numbers about 800 species. Wide polyphages damage all vegetable crops in greenhouses.

It can also affect the plant and anthracnose, which appears on the leaves and stems of the plant in the form of small yellowish spots. The fruits obtained from a plant infected with anthracnose will be tasteless, with large ulcers on the skin. Treatment of cucumbers for diseases is carried out using the drug

Aphids appear on cucumbers in July-August. These are insects one and a half to two millimeters in size, dark green or black. It feeds on aphids with plant sap. Through her fault, the leaves of the plant curl, and the flowers and ovaries fall off. Colonies are placed on a plant in tens, hundreds and even thousands. Sometimes all the leaves can be dotted with these cucumber pests. If there are a lot of insects, then the affected plant is depleted and dies.

Sclerotinosis develops with a drop in air temperature, high humidity and thickened planting of cucumbers. The pathogen remains in the soil and in the remains of infected plants. Sick specimens are removed and burned. Sometimes it is possible to save diseased plants by using the biological product Fitosporin-M or 1% solution of Bordeaux liquid 2-3 times at intervals of seven days at the initial stages of the disease.Infusion of marigolds or nettles. Fill the bucket a third with marigold flowers or nettles. Pour boiling water over. Insist day, strain. Spray the cucumber leaves on both sides. 1 cup wood ashThe manifestation of the disease occurs in the form of the appearance of small sores of a brown color on the plant, and at the same time fluid is released. These ulcers can cover the entire fruit, then it is not suitable for consumption. The disease can destroy an entire crop in 6-8 days.

When they hit the surface, insects simply stick (you can read about other ways to get rid of ants and other insects in other sections). After that, the plywood surface is wiped and a new layer of the mixture is applied.

Carefully remove all plant residues, debris and be sure to incinerate them. Around cucumber plantations, systematically destroy weeds on which pests can feed and multiply.

The most harmful and widespread in greenhouses are melons, greenhouse and large potato aphids.Topaz It is useful for gardeners to know how to deal with aphids on cucumbers. Ladybugs help to reduce the number of aphids. One has only to bring them in the spring from the field grasses. They are attracted by mustard and dill.

Infusion of cow dung blocks the spread of the pathogen of powdery mildew. Fill a bucket 1/3 with cow dung. To fill with water. Insist 2-3 days. Dilute a liter of infusion in 10 liters of water. Sprinkle the cucumber leaves.

Powdery mildew

1 teaspoon of copper sulfate

Control measures:

Spraying with clean water has proven itself perfectly, washing the lower part of the leaf gives a particularly good effect, whitefly accumulates especially a lot here. After washing the leaves, loosen the soil 2 cm or add the following components: sawdust, peat, or add humus with a layer of 2 cm.After that, the infusion should be stirred and filtered.

To destroy pests, at the end of the growing season and after sealing the greenhouses, be sure to decontaminate the plants with 40% formalin mixed with insectoacaricides;
Aphids are insects with incomplete transformation, they do not have a pupal stage. Adult insects are wingless and winged. Wingless females with an oval body 1.2-2.1 mm long, winged individuals have a body 1.2-1.8 mm long.
! A well-known disease is root rot, from which mature bushes suffer most. The affected plant will dry out very quickly. To fight the disease, be sure to use a biological product
You can treat plants with tobacco infusion or wood ash infusion with the addition of laundry soap.
Root rot is a fairly common fungal disease in cucumbers. The pathogen lives in the ground where diseased plant specimens grew. Lowering the temperature of the soil, frosts, watering cucumbers with cold water also lead to illness. Root rot is a disease of cucumber seedlings, often occurs when young plants are planted deeply and hilled.
In advanced cases, chemicals are used: Topaz, 1% Bordeaux mixture, Tiovit Jet.

Mix thoroughly and sprinkle the affected areas with the resulting solution.

Control measures:

At the first appearance of white bloom on plants, they should be immediately treated with a mullein solution: you must take Attention: Never sprinkle with fresh sawdust. When applied this way, they take calcium from the soil and deplete it. Use this product when it has been left for one year, then add one spoonful of liquid soap and 3 tablespoons of wood ash

To reduce the number of whiteflies in greenhouses with anti-corrosion coating, carry out fumigation with sulfur gas (combustion of sulfur at the rate of 50 g per 1 m2); Their color can be different: grayish, black or almost white.Trichodermin

Infusions of onions and garlic also help with this insect. Seventy - ninety grams of onions or forty - sixty grams of garlic should be finely poured and poured with ten liters of warm water. After a day, you can process cucumbers with this infusion.

Cucumber leaves wither, especially after prolonged rains. The base of the stem near the soil cracks, the root turns brown, gradually decays and dies off. If a disease is detected in the early stages, the cracked diseased stem should be treated with the composition: 0.5 liters of water, 1 teaspoon of copper sulfate, 3 teaspoons of wood ash or chalk.

Brown Spot (Olive)

At the first manifestations of the disease, you should stop watering the plants for 6 days, on warm days, ventilate the greenhouse. To do this, you must completely open all doors and vents, and if there is film on the beds, remove it. At cool temperatures, everything should be closed; this is done to raise the temperature in the greenhouse to 25 * in the daytime and to 23 * at night.

10 liters of warm water (25 *)

Diseases of a cucumber in a greenhouse can overtake downy mildew. It has become like an epidemic in recent years. The plant can get sick at any stage of development.

Tablespoons are used. The consumption of the prepared preparation isDisinfect greenhouses, shelves, paths, containers, inventory with bleach (400 g per 10 liters of water). The solution must first be infused for 2-4 hours, then drain the clear liquid and use for spraying, and the sediment for coating greenhouse structures. For this purpose, caustic soda can also be used (300-500 g per 10 liters of water).

Root rot

Most species of aphids are sedentary. Thanks to their long legs, aphids can move long distances.

Cucumber mites are a common problem around the world. Vegetables especially suffer from it in greenhouses or under plastic. The mite sticks to the bottom of the leaf and drinks the sap of the plant. In addition, the sheet is covered with cobwebs. As a result, the once healthy and green leaf loses its color and dies.

You can sprinkle the affected areas of the stem with ash, chalk. For preventive purposes and during the initial processes of plant damage, the biological product Fitosporin-M can be recommended.Downy mildew is the most common disease in cucumbers. If watering is incorrect, water drops remain on the leaves. The wet surface of the leaf plate, cold night temperature contribute to the development of the disease. Yellow spots of various configurations appear on the surface of the leaves. The lower surface of the leaves is dotted with gray-purple spores of the fungal pathogen. The yellow spots on the leaves gradually increase in size and turn brown. Over time, the leaf plates dry out and die off.
When fungal diseases occur in plants, it is better to immediately
Diseases of greenhouse cucumbers can be root rot. They spread extremely quickly on the soil where cucumbers have already grown. The disease can also manifest itself when watering with cold water and a significant decrease in soil temperature.1 liter of liquid mullein
It infects diseases of cucumber seedlings in the greenhouse. The infection persists for a long time, about 6-7 years.
1-2 liters per 1m2
In order to increase the resistance of cucumber plants to pests, observe the optimal temperature regimes (at night not lower than 18-20 ° С, during the day not higher than 28 ° С) and air humidity (85-90% and 75-80%, respectively), sowing and planting times , applying a complex of fertilizers. Whitewash the glazed greenhouses on the south side in sunny weather with chalk;
With their proboscis, they pierce the cells of leaves, young shoots and suck out the juice from them, as a result of which the leaves first turn yellow, then become covered with brown spots, wrinkle, curl, dry out and die off, flowers and ovaries fall off.

Gray rot

Knowing how to deal with cucumber diseases, you will protect not only the plants themselves, but also all other crops growing nearby.

Fight it with spraying. The required solution can be purchased at the store. If this is not possible, then you can treat the leaves with soapy water. You can populate a cucumber plantation with the natural enemy of the insect - phytoseiulus. It sucks eggs that are laid by females. But you need to check in every two to three weeks.

Peronosporosis mainly affects old and middle-aged leaves. The disease is spread by spores of the fungal pathogen. Infected seeds are most often the source of infection. Downy mildew retards the growth of cucumbers, the presentation and taste of the fruits are lost.

Spray with a bacterial preparation "Barrier" or "Zaslon"

This disease often arises from improper planting of seedlings, when deepening or additional hilling is carried out.

1 spoon of urea.

, Determine by the number of aphids. Spraying should be carried out within a week.

Water the plants only with warm water, the temperature of which does not exceed 25 ° C. In the period of cold snaps, irrigate rarely, so as not to overmoisten the soil.

Black leaf mold

Cucumber mosaic is a viral disease that affects many fruit crops. It can be transmitted to cucumbers from a number of diseased plants, as well as through weeds. Aphids are also a spread of the disease.

When peronosporosis appears, watering of cucumbers and feeding should be temporarily stopped. Cucumbers should be treated with fungicidal agents.

, The more they are harmless to people.

Mix the solution thoroughly

Signs of the disease:

You can also try the second option.

To control pests of cucumbers, use biological agents: hang yellow glue traps against the whitefly - small shields and depends mainly on the host plant.

Aphids, which appear most often in July. This insect feeds on the juice of cucumbers, which leads to a lack of nutrients, as a result, the plant simply dries up. Treating crops with an infusion of soap and wood ash will help you to evict pests; the insect also does not like the smells of garlic and onions. The recipe for the infusion is very simple: dissolve 50 g of finely chopped onions and garlic in a 10-liter bucket of water, and then process the plants with this solution. By the way, if you do not remove aphids in time, soon you will find snails in the country that feed on aphids.

In addition, infusions of yarrow, celandine, dandelion and horse sorrel cope well with insects.

For cucumber mosaics, contact insecticidal preparations are used. Aktara and Aktelikt have proven themselves well in the treatment of cucumber mosaic.
Use a 1% solution of Bordeaux liquid 3-4 times with an interval of 7-10 days.
After a while, they merge into large ones. After that, the stems and leaves dry up and become covered with a black coating in the form of a cobweb.
Cucumber leaves begin to wilt before or after fruiting. This is especially noticeable in good weather, which comes after prolonged cloudy days.

Anthracnose

Leaf processing should be carried out both in the lower and upper parts.

From 8 to 10 days

Stir 2 glasses of ash in 10 liters of hot water,

Carefully treat the plants with a freshly prepared solution, evenly wetting the leaves from the top and bottom. Carry out the treatments at an air temperature above 22 ° C. A few hours after the treatment, the aphids stop feeding and damage the plants, but complete death occurs after 3-5 days. The last treatment should be carried out 3 days before harvest;

Olive spot

The development period of one generation is 6-10 days. Optimal conditions for the development of aphids: temperature 23-25 \u200b\u200b° C, relative humidity 80-85%. Temperatures above 30 ° C inhibit the development of aphids.

The spider mite can also infect the garden, which also sucks out all the juices of the plant. It is easy to find it - a cobweb appears on the leaves and stems. If you do not find a tick in time, then in a month the cucumber bushes will simply dry out. The method of struggle is simple - processing the plants with laundry soap or spraying the bushes with infusions of celandine and dandelion.

It is a very common pest that infects vegetables growing in greenhouses and greenhouses. Its length is one and a half millimeters. It penetrates the roots and settles in their tissues. The toxic substances that it releases form swellings and build-ups. Larvae develop in them. Plants are stunted and yield decreases.

In the treatment of peronosporosis in cucumbers, the microbiological preparation Fitosporin-M has proven itself well. It is a natural preparation based on living cells and spores of microorganisms using natural humate.

White rot

The disease begins with a sharp change in day and night temperatures. Infection can remain on greenhouse structures and on plant seeds.

If you remove the soil a little from the stem, yellowing of the stem and the appearance of cracks immediately becomes noticeable at the very root.

Many pollinate damaged plants with sulfur, only fine grinding is used. The sulfur should be placed in a gauze bag, which is made in three layers. Pollination is carried out in warm weather in the daytime.

Root rot

... The plant becomes as if it has received burns, its leaves turn brown.

Then add liquid soap 1 spoon

To reduce the number of greenhouse whitefly and melon aphids during the growing season of plants, you can release macrolophus (at the rate of 5 individuals per 1 m2). When foci of pests appear, the predator is released in a ratio of 1: 5 to 10. The next two releases are carried out every 10-12 days (at the rate of 150 thousand individuals per 1 ha);

The greenhouse whitefly is also clearly visible in the photographs - another very common pest of cucumbers in greenhouses.

Cucumber mosaic

Another harmful insect is the rootworm nematode, which prefers to live in greenhouses and hotbeds. This harmful worm settles in the root system of plants, which leads to a slowdown in the development of cucumbers and a decrease in yield. If a nematode has settled in the garden, then the soil is best replaced with a new one and, just in case, steam it.

A layer of affected soil (fifty centimeters) is changed to healthy. In greenhouses and hotbeds, the soil is treated with steam. In winter, you can freeze the ground. Clean tools and healthy planting material should be used.

Pests such as spider mites, whiteflies, and aphids can destroy mature cucumber plants in a short time. It is recommended to grow dill, marigolds, marigolds around the plantings of cucumbers. These plants repel many pests. When cucumbers are affected by aphids and spider mites, it is recommended to spray the plants with garlic infusion. Chop 100-150 g of garlic and pour 10 liters of water. Insist for several hours. Strain the solution and spray the leaves on both sides. Spraying is carried out 3-4 times in a week.

Preparations Topaz and Hom - remedies for cucumber diseases work effectively in the initial stages of the disease with peronosporosis.

Pests

Control measures:

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The temperature should be between 23 * and 28 *. In the greenhouse, doors and windows must be closed during processing. In the open field, after treatment, the plants are covered with foil for 2 hours.

You can hardly find a garden plot that does not have at least a few cucumber bushes. But cucumbers, whether outdoors or in a greenhouse, are often infested with pests. There are simple preventive measures to help minimize the risk of infection. If you still could not avoid this, then you need to be able to identify specific symptoms and know what to do in each specific case.

Since cucumbers are more than 90% water, it's easy to guess that they need frequent and abundant watering. High humidity in combination with high temperatures, as well as the closed space of the greenhouse is an ideal "incubator" for many pathogenic fungi, viruses and bacteria that often attack bushes and crops. But this is not the only attack that plants can suffer from. Cucumbers are a favorite treat for many insects. And although many modern hybrids have protection against at least some diseases at the genetic level, breeders are not yet able to save them from pest attacks. If you do not start taking action in time, it is quite possible to lose a significant part or all of the crop.

No breeder is yet able to protect cucumbers from pests

Often, gardeners themselves unwittingly contribute to the appearance of pests. The risk of infection is greatly increased when:

neglect of weeding and pre-planting seed treatment;

failure to ensure optimal temperature and air humidity;

lack of ventilation in greenhouses and greenhouses;

untimely soil replacement and non-compliance with crop rotation.

Cucumbers are to the taste of many "universal" pests that will not disdain most plantings in the garden.

Slugs

It is quite easy to identify these pests. Despite the fact that they are mostly nocturnal, slugs leave characteristic traces in the form of through holes in the fruits and traces of a sticky viscous liquid that casts silver in the sun. I don't want to eat such cucumbers (and other fruits spoiled by them).

Dealing with slugs is relatively easy. Since they do not differ in movement speed and mimicry abilities, manual collection of pests is quite effective. The procedure is best done in the early morning when they are least active.

You can create an almost insurmountable barrier for pests by surrounding cucumber bushes with several rings of sand, wood ash, soda ash, spruce needles, ground eggshells, and so on. The delicate body of the slugs does not have even minimal protection.

Homemade traps are also very effective. Deep containers are driven into the ground, the upper edge of which should be level with the soil. They are filled with sugar syrup, jam, beer. Slugs are well caught on cabbage leaves or a grapefruit cut in half.

There are also special drugs - Meta, Thunderstorm, Slime-eater. But it is worth remembering that it is forbidden to use any chemicals during fruiting and at least 20 days before the expected harvest, it is undesirable - during flowering and the formation of ovaries. This does not apply to biological products, the effects of which disappear in 2-3 days.

Slugs leave traces of sticky shiny liquid on cucumbers

Whitefly

Whiteflies are similar to moths - these small whitish, yellowish or grayish butterflies stick around the leaves of cucumber bushes from the inside, rising in a cloud into the air at the slightest touch of the plant. Most often, greenhouse cucumbers suffer from them. Whitefly larvae feed on plant sap, and adults are carriers of many bacteria and viruses that are dangerous to them, for example, cucumber mosaic.

The hardest part is keeping the whiteflies out of the greenhouse. For this, the vents and doors are curtained with a mesh with fine cells or ordinary gauze. If it was not possible to avoid the appearance of pests, sticky tape for catching flies or homemade traps are hung next to the plantings. For some reason, the whitefly is very partial to yellow. This feature is used by smearing pieces of cardboard with some adhesive substance.

The tobacco planted on the cucumber garden is guaranteed to divert attention to itself. Then these bushes can be treated with a suitable insecticide - Aktellik, Aktara, Fitoverm.

Whitefly mainly affects cucumbers growing in greenhouses and greenhouses

Gall nematode

The females of these worms lay their eggs in the soil. The larvae choose roots as their habitat - characteristic spherical swellings of various sizes appear on them. Then they turn brown, unnaturally thicken, become brittle. If you do not change the soil in the garden or in the greenhouse for a long time, any crops grown on it will suffer from the mass reproduction of nematodes. They are especially dangerous for cucumbers with their not too developed root system. The situation is aggravated by the fact that it is almost impossible to notice the appearance of nematodes in time. Their presence becomes apparent only when many plants have already been affected. Therefore, special attention should be paid to prevention:

alternation of crops in the same bed or planting mixed with cucumbers cabbage, radish, radish (and other plants from the Cruciferous family), garlic - the nematode does not eat them;

regular weeding;

soil sterilization - watering with boiling water or freezing in winter;

annual renewal of the soil in the greenhouse, or at least its top layer (7-10 cm);

treatment with disinfectant solutions of any garden tools before use.

Cucumber roots afflicted with root nematode look completely unnatural

The wireworm, or the larva of the click beetle, can most often be found in the beds with potatoes and carrots. But if there is an active fight with him, he may well switch to cucumbers. Omnivorous larvae destroy the planted seeds, gnaw at the roots.

As part of the fight against wireworm in late spring and early summer, as well as in autumn, they deeply loosen the soil in the beds, at the same time adding slaked lime, dolomite flour, wood ash, crushed chalk, powdered eggshells. All this neutralizes the increased acidity of the soil. It is in such soil that the wireworm feels best.

He also dislikes high nitrogen content. But it is not recommended to get carried away with fertilizers, which include this macronutrient. This is to the detriment of the future harvest. It is better to plant any legumes next to the cucumbers.

For prophylaxis, 0.5 liters of a bright pink solution of potassium permanganate are poured into the holes prepared for planting seeds or seedlings. And cut potatoes or carrots are buried in the ground to a depth of 15–20 cm. After 2-3 days, the root crop must be removed (for this, a long stick is first inserted into it) and the larvae must be collected.

The wireworm's favorite crops are potatoes and carrots, but he may well switch to cucumbers too.

A fairly large insect feels most comfortable in a nutritious, well-moistened soil. It is this kind of soil that is provided to cucumbers in greenhouses and hotbeds. Bears live mainly underground, gnawing at all the roots along the way in the process of movement.

They can be easily dealt with mechanically without resorting to hazardous chemicals. Effectively deep digging of the soil in spring and autumn, manual collection of pests, pouring vegetable oil or soap solution into the holes found underground. You can also build traps - containers with water, corn or millet porridge. In a greenhouse or in a garden bed, marigolds are planted mixed with cucumbers - bears do not like their sharp aroma.

In the process of movement, the bear gnaws at any roots that come across in its path

Thrips

Thrips are small sucking insects. Adults are colored black, have the shape of an elongated ellipse with pointed ends. Pests are dangerous because insects at different stages of development are simultaneously present on the plant.

It is easy to identify them by their beige-silver “scratches” and blurry yellowish or almost colorless spots on the wrong side of the sheet. Sticky traps are effective against adults, but not yellow, but blue. Regular weeding is also very important. For prevention, cucumber bushes are sprayed with infusions of garlic, onions, any pungent-smelling herbs, orange peel. In the absence of an effect, insecticides are used - Aktara, Fury, Calypso, Inta-Vir.

Thrips are easy to recognize but hard to get rid of

Of course, the list of pests dangerous for cucumbers is not limited to this. The most common are the following.

Video: pests typical for cucumbers

How to spray from melon aphids

Aphids are small yellowish or dark green insects, whole colonies clinging to the inside of leaves, buds, fruit ovaries, tops of young shoots. They feed on plant sap. As a result, the leaves wrinkle, deform, and the buds fall off. The cucumber bush practically stops growing, then dries and dies. Aphids are dangerous not only in themselves - they carry many dangerous microorganisms, for example, soot fungus.

The melon aphid is a pest that is very easy to spot

If the problem is noticed in a timely manner, when the aphids are still a little, you can simply wash it off the bush by pouring a stream of water over the cucumbers from a hose under strong pressure. If there is no technical possibility, the leaves are simply wiped with soapy foam.

Melon aphids stick around young cucumber leaves with a dense layer

Processing cucumbers from aphids with folk remedies

Folk remedies are good mainly for the prevention of aphids. Cucumbers growing in a greenhouse are sprayed with appropriate solutions every 7-10 days, in the open field after each rain. Any product with a strong, pungent odor will do. He is very unpleasant to aphids.

onion peel (100 g for 2.5-3 liters of boiling water, leave for 24 hours);

garlic (head crushed into gruel per liter of hot water, leave for 2-3 days, dilute 1: 5 with water before use);

hot pepper (30 g of finely chopped pods or 10-15 g of powder per 10 liters of water, leave for 24 hours);

tobacco chips (it is desirable that the tobacco be grown independently, 200 g of dry leaves per 10 liters of water, leave for 2-3 days, add a liter jar of sifted wood ash before use);

dandelion leaves or roots (mince 400-500 g, pour 5 liters of water, let stand for 2-3 hours, add 30-40 g of mustard powder before use);

tops of tomatoes or potatoes (200 g of chopped raw materials for 5 liters of water, leave for 10-12 hours, add 25-30 g of soda ash before spraying).

Infusion of onion peels, like other products with pungent odors, is an effective remedy against melon aphids

Other methods of struggle

If time is lost, and the pest has multiplied en masse, the most affected leaves and whole lashes are cut off and burned as quickly as possible. The remaining plants in the greenhouse are fumigated with sulfur bombs, in the open field they are sprayed with a solution of Karbofos (50 g per 10 liters of water) or powdered with colloidal sulfur powder.

When there is no effect, insecticides are used. Against aphids, drugs of a wide spectrum of action are mainly used - Inta-Vir, Fitoverm, Aktaru, Confidor, Fufanon, Karate. Biotlin, Iskra-Bio, Strela cause less harm to plants (fruits can be eaten 2-3 days after spraying). The solution for processing plants is prepared in strict accordance with the instructions given by the manufacturer in the instructions. The procedure is repeated every 4–7 days until the complete destruction of the pest. It is advisable to change the drugs in this case.

Herbs are a good protection against aphids. You can surround the beds or plant basil, coriander, lemon balm, mint, dill mixed with bushes. Datura and henbane will also help, but they are very poisonous. Most of these plants are good honey plants and attract the natural enemies of aphids - ladybirds - to the garden. By the way, if you wish, you can simply collect them somewhere and release them into a greenhouse or garden beds.

Inta-Vir is one of the most common broad-spectrum insecticides

Do not forget that aphids live in a stable symbiosis with ants. The latter will also have to be fought. The top layer of earth (5–7 cm) is removed from the anthills found next to the garden bed and the soil is sprinkled with soda ash, mustard, hot pepper, boric acid, or the soil is spilled with a solution of special preparations, for example, Anteater or ordinary boiling water.

Video: measures to combat aphids in the garden

The spider mite is a dangerous garden pest that affects most plants. They themselves are almost invisible, but thin, translucent cobwebs, twining leaf petioles, buds and tops of shoots, are striking. The spider mite feeds on plant sap, so the affected parts quickly turn yellow, dry and die off. At first, only small yellowish or translucent specks are visible on them. It also spreads a fungus that causes a very dangerous disease - gray rot.

It is rather difficult to notice the spider mite itself with the naked eye, but traces of its vital activity are clearly visible

The pest feels best in a dry, hot climate, therefore, unacceptable conditions are created in the greenhouse, increasing the humidity of the air and regularly ventilating the room.

Plants affected by spider mites quickly turn yellow and dry out

Early prevention and control

It is impossible to cope with spider mites with folk remedies. Onion, garlic, pepper infusions are used mainly for prevention. Plants are treated every 5–12 days. It depends on how hot it is outside. The warmer, the more intensively spider mites multiply. You can also place several containers with kerosene, turpentine, acetic acid in the greenhouse. If the cucumbers are grown outdoors, this method is less effective.

When a tick is found on time, spraying with 3% hydrogen peroxide (40 ml per liter of water) or ammonia (5-7 ml per liter) can help. The leaves of diseased plants are powdered with tobacco dust, colloidal sulfur or sifted wood ash. The following herbs are also quite effective:

Datura. Fresh (1 kg) or dry (100 g) greens are poured with a liter of water, boiled for 2-3 hours. Before use, dilute another 10 liters of water.

Dandelion. The greens or roots (0.5 kg) are crushed, poured in 10 liters of warm water, left in the sun for 3-5 hours.

Calendula. Dry flowers (400-500 g) are infused for 4-5 days, pouring 3 liters of water.

Sorrel. Finely chopped rhizomes are infused in 10 liters of water for 5-6 hours.

Yarrow. Dry leaves and flowers (0.5 kg) are poured with a liter of boiling water for a day. Before use, dilute with water 1:10.

Cucumbers are processed with prepared broths and infusions using a drip irrigation system. It is impossible to carry out processing under the bright sun, the best time for it is early morning or late evening.

Datura is quite effective against spider mites, but it is a strong poison for people and pets.

Experienced gardeners advise planting tomatoes and cabbage mixed with cucumbers.

In the event of a mass invasion

A spider mite is not an insect, so general-purpose insecticides are not suitable for controlling it. It is necessary to use special preparations - acaricides (Akarin, Agravertin, Floromite, Apollo, Sunmayt). There are also less dangerous agents of biological origin - Vertimek, Kleschevit, Fitoverm. The spider mite develops immunity very quickly, therefore, for each subsequent treatment, it is advisable to use a new agent. Before the procedure, the cucumber bushes must be cleaned of the cobwebs on them. It retains drops of water, preventing them from falling on the plant itself.

The first time after wintering, the spider mite larvae live on weeds, so special attention should be paid to weeding. It is best to cut off and burn the affected leaves immediately, and fumigate the greenhouse or garden with sulfur bombs or sprinkle the soil with colloidal sulfur for prevention.

Anti-mite is one of the safest acaricides

The safest means of combating spider mites for the future harvest and the environment is its natural enemy. The phytoseilus mite is released into the beds or greenhouses next to the affected plants. It is very effective in destroying pest eggs. It is advisable to increase the population of “helpers” every 20–25 days.

Video: fighting spider mites on cucumbers

How to treat cruciferous (black) fleas

Cruciferous flea beetle is a small (up to 3 mm) beetle of black color and round shape, most often with a glossy, shiny shell, shimmering green or blue. The pests are already active in the middle of spring, when the air temperature rises to 12-15 ° C. The larvae are not particularly picky, feeding on roots and greens. The leaves quickly turn into a sieve and dry out.

The black flea beetle can be easily identified by its long legs.

The main thing in the fight against cruciferous flea is to timing correctly. Early varieties of cucumbers are planted as early as possible (in April), late-ripening ones - later (in the second decade of July). Thus, until the beginning of May or mid-August, when the mass appearance of these insects is noted, cucumber bushes will have time not only to grow, but also to slightly “coarse”. The pest prefers young soft leaves, so there is every chance that the flea will "pass by."

The black flea got its official name due to the fact that before the appearance of more suitable food, it feeds on weeds from the Cruciferous family (rape, shepherd's purse, wild radish). Therefore, you need to regularly weed the beds. Any covering material - spunbond, lutrasil, agrospan - will also be effective protection. It is advisable to pull it on arcs and remove when the bushes are strong enough.

Black flea beetle turns cucumber leaves into a real sieve

The black flea beetle is very sensitive to strong odors. Therefore, cucumbers in the greenhouse and in the open field alternate with dill, garlic, basil, coriander. The beds are surrounded by a "barrier" of marigolds, nasturtiums, calendula, wormwood.

Folk remedies

The experience of many gardeners shows that black flea beetles rarely attack "dirty" plants. Therefore, cucumber bushes, especially young ones, are regularly sprinkled with crushed chalk or activated carbon, sifted wood ash, tobacco dust, and hot pepper. The powder is poured into a gauze bag and shaken over the plants. It is best to perform the procedure early in the morning when the leaves are still wet. In the grooves between the bushes, naphthalene is scattered in moderate amounts.

For spraying, solutions of the following agents are used:

"Minced meat" from garlic and tomato tops. The raw materials are mixed in a ratio of about 1: 1, 10 liters of warm water are poured in, and left for 2-3 hours. Filter the solution before use.

Table (9%) vinegar. 200 ml for 10 liters of water. Stir well, can be used immediately.

Potato tops. Grind 4 kg of raw materials, boil for 2-3 hours. Then the broth is cooled, filtered and diluted with water 1: 1.

Chicken droppings. Fresh raw materials are infused for 4–5 days until a characteristic odor appears. Then dilute with water 1:20 and spray the leaves. It is also an effective foliar feeding.

Aromatic oils of any coniferous trees, tincture of corvalol, valerian. 10-15 drops are enough for a bucket of water.

Infusion of chicken manure is not only an effective remedy against black flea beetles, but also a useful top dressing

You can also hang "flags" of a cloth smeared with something sticky next to the bushes. In the very heat, it is useful to walk along the bed with such a trap, swinging it so as to touch the leaves. Disturbed insects, jumping in different directions, stick to the fabric.

To combat the black flea, it is also recommended to use waste engine oil (they lubricate pieces of plywood or cardboard, leave it in the aisles) or a regular vacuum cleaner. Early in the morning, when the pests are least active, they can walk over the plants. The flea shampoo intended for pets (50 ml per 10 l of water) is also successfully used.

Proper care is also important. Cucumbers need abundant watering (the black flea does not like high humidity very much), correct feeding (nitrogen-containing fertilizers are needed - natural organic matter, ammonium nitrate, urea), regular loosening of the beds.

Insecticides for black flea beetle control are used only for massive insect attacks. Most of them (for example, Lightning, Decis) are quite toxic and destroy not only pests, but also young cucumber seedlings. The safest for humans are Arrivo, Aktar, Sherpa. Treatments are carried out in the late evening, when fleas accumulate on the leaves.

Insecticides against black flea beetles are used only as a last resort.

Preventive measures

Often, attacks by harmful insects on cucumber beds become possible thanks to the gardener himself. Most often, mistakes in grooming contribute to this. A set of simple preventive measures will help minimize the risk of infection:

Alternation of crops in the garden. Cucumbers can be grown for a maximum of three years in the same place, it does not matter whether in the open field or in a greenhouse. Then - the same break. Bad predecessors for them are plants from the Pumpkin family, to which they themselves belong. They suffer from the same diseases, they are affected by the same pests. Good - any Nightshades and Legumes.

Pre-planting treatment of the substrate and seeds. The first one is spilled with boiling water and covered with plastic wrap for 2-3 hours, fumigated with sulfuric bombs (in a closed greenhouse) or frozen well in winter (leaving the vents open). In autumn, thorough weeding and deep digging of the soil is required. The seeds are soaked for a day in a pale pink solution of potassium permanganate or in a weak salt (a teaspoon per liter of water).

High-quality soil preparation. Rotted manure, humus, necessary fertilizers are introduced in a timely manner. Seeds and seedlings are planted only in sufficiently warmed soil. At a depth of about 10 cm, the temperature should be at least 12-15 ° C.

Regular weeding. Many common pests feed on weeds, and they lay eggs there.

Planting next to cucumber beds of onions, garlic, marigolds, calendula, herbs. Many insects do not like strong smells.

Correct watering. Use only warm water, which is poured under the root (carefully so as not to expose them) or into the grooves between the bushes. In no case should drops be allowed to fall on the leaves.

Fertilization is strictly in the doses recommended by the manufacturer and at the required frequency. Overfeeding cucumber bushes is just as dangerous as nutritional deficiencies.

Maintaining optimal temperature and humidity, avoiding sudden changes. At night - 18–20 ° C, during the day - no more than 25–28 ° C. The correct air humidity is no more than 80%. The room is regularly ventilated, while avoiding cold drafts.

Mandatory garter for cucumber bushes. This makes it easier to examine them for suspicious symptoms and to control pests.

Avoiding thickening of landings. Two cucumber bushes are most often planted on 1 m². If there are too many of them, because of the solid green mass, it is very difficult to maintain the optimal temperature and humidity, and inspect the plants.

Immediate removal from the garden and destruction of plants, which can no longer be saved from pests. It is best to burn these bushes immediately.

Compliance with recommendations for caring for cucumbers is an important preventive measure that effectively prevents the appearance of pests

During the season, cucumbers can be sprayed for prevention. The procedure is carried out approximately once a week. If they grow outdoors, after every rain. Most often, folk remedies are used - they can be used without restrictions, the harvest will not suffer in any way. To enhance the effect, a little shavings of household or green potassium soap are added to the finished solution - this way it "sticks" to plants better.

25-30 drops of iodine per liter of milk;

100 ml of whey or kefir warmed to room temperature per liter of water;

infusion of garlic (clean a medium-sized head, pass it through a meat grinder or crusher, pour a glass of hot water, leave for a day; before use, dilute in 10 liters of water);

infusion of wood ash (a glass of 5 liters of boiling water, leave for 2-3 days, strain before use).

Wood ash infusion is a 100% natural fertilizer, a source of potassium and phosphorus

Prevention on the cucumber bed is carried out throughout the horticultural season. It starts in April with soil and seed preparation. In May, in greenhouses and hotbeds, work begins to ensure an optimal microclimate, the soil is necessarily disinfected before planting. Further prevention consists in following the recommendations for plant care.

If breeders can protect new cucumber hybrids from certain pathogenic fungi, viruses and bacteria, then they are not yet able to do anything against insect pests. However, a set of simple preventive measures helps to minimize the risk of infection. If it was not possible to avoid them, nothing irreparable has happened yet. The main thing is to correctly identify the problem, to begin to deal with it on time and competently. In this case, the crop can be saved.

Cucumbers suffer from many diseases, therefore they require special care and regular preventive measures to protect against diseases and pests. Unfortunately, it is not always possible to prevent diseases, and you have 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 processed with one or another remedy for pathogens.

Powdery mildew Is perhaps the most common disease that manifests itself on the leaves and stems of cucumbers with a sloppy whitish bloom, which can be easily erased at first. But gradually it darkens to brown and thickens. The affected leaves turn yellow, dry quickly, and if nothing is done, the whole bush may die.

Control measures: it is necessary to immediately remove all diseased organs and treat the plant on the leaves with colloidal sulfur, copper oxychloride, Homecin or Arcerid preparations. From folk remedies, a solution of mullein, milk whey, soda ash, ash infusion, decoction of tansy, nettle and wormwood is used.

Peronosporosis , 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 bloom. Increased humidity contributes to the development of the disease.

Control measures: at the first signs of the disease, 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 over the leaves. Also used for spraying cucumbers are infusion of garlic and a solution of 2 g of potassium permanganate in 10 liters of water. Of the chemical preparations against peronosporosis, fungicides HOM, one percent Bordeaux liquid, Topaz and others are effective.

Gray rot affects the stems, leaves and flowers of cucumbers, on which, after infection, watery spots and a fluffy gray bloom appear. When the infection enters the flower, the embryo dies. Waterlogging of the soil and too dense planting provokes the development of gray rot.

Control measures: Plants are treated several times with an interval of three days on the leaves with a solution of 75 g of soda in 10 liters of water. Of the fungicides for spraying bushes, Alirin-B, Horus, one percent Bordeaux liquid are used.

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

Control measures: plants are treated on the leaves with a solution of fluffy 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 dies in the bush, 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. Contribute to the development of the disease and sudden temperature changes.

Control measures: the lower part of the plant is cleaned of soil, the 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, and then the powder is covered with a rake. From folk remedies against root rot, an aqueous solution of iodine and milk is used. Fundazol, Kolfugo Super and Fitoflavin 300 are effective in combating root rot.

Anthracnose determined by rounded yellow-brown spots on the leaves, which, in conditions of high humidity, become covered with a pinkish bloom. Ulcers form in these places, cucumber leaves wrinkle, 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 with a frequency of a week with one percent Bordeaux liquid (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 (the last times - three weeks before harvest). Locally affected areas are treated with a solution of copper sulfate.

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

Control measures: Cladosporium resistant varieties are recommended. When an infection appears in the greenhouse, it is necessary to lower the humidity of the air and soil and feed the cucumbers with potassium sulfate. The fungus is destroyed by treating the plants with a 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 wilting first destroys the tops of the shoots, then goes to the leaves and root collar of the bush. If you do not stop the development of fusarium, the bush can die in two days. Fusarium develops against a background of high humidity.

Control measures: for preventive purposes, the seeds should be treated with a fungicide or potassium permanganate solution before planting. The soil is shed with a solution of Fitosporin M or Trichodermin a week before planting. Chemicals, like folk remedies, cope with fusarium with great difficulty, so it is better to prevent the appearance of this infection on cucumbers.

Viral diseases of cucumbers

Ordinary mosaic appears on the leaves of cucumbers with light green spots. With the development of the disease, the leaves become as if corrugated. The virus spreads through contaminated seed, therefore, the seeds must be disinfected before sowing. As a preventive measure, the bushes should be sprayed with a light pink solution of potassium permanganate.

Field mosaic carried by sucking pests. In affected plants, the leaves wither and fall very quickly. As a preventive measure, cucumbers are sprayed with Fitosporin solution.

White and green speckled mosaic first paints the leaves of cucumbers, and then is taken for 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, weeds should be regularly weeded, from which peddlers can come to cucumbers, and the bushes should be watered at the root with warm water. In the greenhouse, a sharp temperature drop should not be allowed.

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

Even a novice gardener can grow cucumbers. However, this culture is quite demanding on the observance of agricultural technology and, despite its resistance to most diseases, it is prone to rapid defeat by them.

The first problems may arise even at the stage of growing seedlings. Therefore, experienced gardeners pre-prepare the seed and land. In addition to hardening and soaking, the seeds are treated with one of the disinfectants.

Potassium permanganate. The seeds are kept in a bright purple saturated solution for 20-30 minutes, then washed and prepared for planting.
Bacterial drugs - "Baxis", "Fitosporin" and others. The seed of a cucumber is soaked in a solution for 1.5 hours, then dried.

All these products destroy harmful fungi and bacteria from the surface of the seeds. Such a measure will help prevent many diseases.

The soil is pre-frozen, calcined in the oven, or watered with disinfecting solutions:

insecticides - "Aktara", "Thunder", "Iskra" (one month before sowing);
fungicides - "Fitosporin", "Barrier", "Extrasol", etc .;
a pale manganese solution (2 weeks before planting).

But diseases can affect a plant at any stage - in a glass on a windowsill, in a greenhouse or in an open field.

Fungal diseases of cucumbers

Fungi are the largest and most common group of microorganisms affecting cucumbers. When infected with them, spraying with EM preparations ("Fitosporin", "Baikal"), as well as compositions according to folk recipes, is effective:

yogurt (kefir), diluted in half with water, with the addition of 1 drop of iodine for each liter of solution;
, diluted with water 1: 1;
a mixture of 5 components: 1 part of water and sour milk with the addition of 2 g of dry potassium permanganate, 40 g of liquid soap, 50 g of soda;
infusion of ash (1 glass of dry matter in a bucket of water, stand for 24 hours and filter before spraying).

For some varieties of fungus, it is better to use individual control methods.

Powdery mildew

Appears from excess moisture. A white bloom forms on the leaves on the upper side, then they wrinkle and die. The seedlings stop growing, the color and the ovaries crumble.

Prophylactic treatments with sulfur-containing preparations (colloidal sulfur or "Quadris") are effective with an interval of 10 days. A couple of weeks before harvesting the fruits, processing is stopped.

Downy mildew

The disease destroys cucumbers very quickly. There are no 100% effective control measures. The lesion looks like a white-purple bloom on both sides of the leaf. The greens gradually turn brown, the plant dies. High humidity contributes to the development of the fungus.

For treatment and prevention, you will need copper preparations and fungicides - "Ridomil Gold", "Bravo", "Strobi" (they need to be watered or sprayed on cucumbers). A month before the ripening of the crop, processing is stopped.

Various root rot

They are caused by fungi that live in the soil. Weak plants are more prone to damage. Diseases of this group arise from frequent hypothermia (at temperatures below 16 degrees). The disease proceeds as follows: first, thin roots die, then a plaque appears at the base of the stem, the leaves wither, then the bush at the root begins to rot.

First of all, the gardener needs to shed the soil with pale potassium permanganate, increase the temperature of the earth and pour a layer of fresh earth around the stems.

Anthracnose, ascochitis and cladosporium

The symptoms of diseases are similar - spots and holes appear on the leaf plates, the fruits become covered with brown sores. Gradually, the entire plant begins to wither and die. Mushroom spores live on cucumber tops and can be carried by the wind.

For prevention and treatment, spraying with 1% solutions of copper-containing agents (Bordeaux mixture or copper oxychloride) is carried out every 7-10 days. A month before harvesting the fruits, processing must be stopped!

White rot

The fungus is very dangerous, its defeat is manifested by the appearance of a white flocculent bloom with black specks throughout the plant. Then the affected areas become soft and slimy. The entire bush can die in 5 days.

The means of struggle are powerless - the dead plants are destroyed, and the land is cultivated with high temperatures or replaced with a new one.

Viral diseases

Viruses are living organisms, most often spread through seeds or from one plant to another in a variety of ways. Chemicals are powerless against viruses.

Preventive measures will be effective:

control of weeds and insects sucking plant juices;
buying virus-resistant seed varieties;
treatment of inventory with alcohol, potassium permanganate;
lowering the temperature in the greenhouse if it reaches 30 degrees;
processing of dry seeds with high temperatures for 10 minutes (+ 50-70 degrees);
destruction of diseased plants with roots, soil treatment with boiling water.

In addition, the gardener must observe the crop rotation - do not plant cucumbers in one place for 2 years in a row.

Ordinary cucumber mosaic

Affects about 500 varieties of plants, including weeds. Lives in the roots of perennials, is carried by insects that feed on their sap. When damaged, the stem cracks at the base, the growth of the plant slows down, shapeless light spots appear and grow on the leaves, the leaf plates become smaller and wrinkled, the edges curl downward.

For prophylaxis and in the initial stage, the solution of "Farmayoda" 3% will help (only during the growing season).

White mosaic

The fruits become gnarled, with large white spots, the veins on the leaves are covered with stars that look like a mosaic. In general, this type of virus is similar to the green mosaic.

Green mosaic

Plants are stunted, fruits and leaves are covered with a green mosaic net. Transmitted from other plants during harvest or with water.

At the initial stage and for prevention purposes, spraying with 10% solutions of whey or skim milk will help, it is possible with the addition of iodine.

It is not very effective to “treat” seeds with high temperatures from green mosaic - the virus dies only when heated to 90 degrees, which is dangerous for the seed.

Tobacco mosaic

The leaves are covered with a marble mosaic pattern, the affected fragments swell, then the leaf plates completely die off. The fruits become clumsy, the yield drops.

The parts of plants affected by the virus are cut off with a knife processed in alcohol or vitriol and destroyed.

Bacterial diseases

The most common infection in cucumber is bacteriosis. Another name is angular leaf spot. Outbreaks of the disease occur on the street or in a greenhouse when high humidity persists for a long time at a temperature of 18-24 ° C. At the same time, moisture is constantly present on the leaves.

The disease is manifested by the appearance of angular spots on any part of the plant. The fruits are affected by ulcers, rot.

For prophylaxis and treatment, preparations from hay sticks are used, during the growing season they are sprayed with a 0.7-1% solution of Bordeaux mixture, the temperature is raised.

Cucumber pests

A pest attack can cause tremendous damage to plantings in a short time. The gardener should carefully monitor the appearance of insects and not delay processing.

The most common pests found in cucumber beds:

... Signs of damage: the leaves begin to curl and wrinkle, on the back of them you can see clusters of insects. Gradually, from aphid excrement, a sooty fungus settles on the plant.
Whitefly. A whitish bloom appears on the leaves, later they turn yellow and dry out. On the back of the leaf, insects themselves are hiding in large numbers. If you disturb them, then they take off together.
Spider mite. Thin cobwebs appear on the leaves; upon closer inspection, you can also see small ticks.

All these pests feed on plant juices and carry diseases that are dangerous to cucumbers. Control methods:

After processing with pesticides, it is necessary to wait for the allotted time before harvesting. You need to use poisons strictly according to the instructions.

Since a healthy and strong plant is less susceptible to the influence of diseases and pests, it is extremely important to adhere to agricultural technology: it is impossible to thicken the plantings, allow the soil to dry out excessively, fill or create a stuffy atmosphere in the greenhouse, damage the stems and leaves, fertilize too much. A good precaution would be to purchase seeds only from a reputable producer. Prevention and timely treatment will minimize all risks, and cucumbers will delight you with a good harvest until autumn.

When growing cucumbers, it is necessary to pay increased attention to the condition of the soil, the level of moisture and temperature conditions. Such actions will prevent various ailments. Prevention of cucumber treatment is especially important when caring for seedlings.

Basically, gardeners fight plant diseases using homemade compounds. In this aspect, they are guided by low cost and increased effect. Some of them have a much better effect than purchased fertilizers. At the moment, effective recipes have been developed against each pest.

When cucumbers have small flowers, a light shade and thin lashes during flowering, it means that the plant is deficient in nitrogen. In this regard, to the question of how to process cucumbers, summer residents recommend using a mullein mixture. You can prepare fertilizer by taking 8 liters of liquid and 1 liter of mullein.

If the shape of the fruit is round, and the body narrows near the stalk, then the fruit does not have enough potassium. Its deficiency is replenished with the daily use of wood ash diluted in water. One liter of solution will be enough for one bush of cucumbers.

After picking cucumbers, all beds must be cleaned of weeds. Their disinfection can be carried out using a solution of copper sulfate. These preventive measures will prevent the harvest from fungal and other diseases for several years in advance.

Preventive spraying of plants

Many gardeners are interested in the question of how to spray cucumbers to obtain high yields. For these purposes, milk mixture with the addition of thirty drops of iodine is excellent. You also need to add three tablespoons of grated laundry soap.

The resulting solution should be used once every 10 days, while the fruit is ripening. This mixture is versatile against various plant pests and diseases.

In order to treat and protect cucumbers from fungal diseases, an ash solution is effective, acting as a foliar feeding of plants. To prepare such a solution, it is necessary to dilute the sifted ash in 2 liters of boiling water with the addition of laundry soap.

You need to rub the soap. For prevention purposes, such a solution is used once a week. When there are obvious signs of the disease, it is used after 2-3 days.

One of the excellent means for carrying out preventive measures is a mixture based on rye bread, 30 ml of iodine, and water. Experienced summer residents say that if you regularly spray cucumbers with such a solution, this will increase productivity. The fruits will ripen much faster.

How to deal with powdery mildew

Powdery mildew brings a lot of trouble to gardeners. White bloom on the leaves testifies to its manifestations. After some time, the leaves acquire a reddish color. If you do not take any measures, then the leaves begin to turn yellow and dry. This leads to the termination of the fruiting of cucumbers.

It is believed that this disease is caused by fungal spores that remain in the soil from the plants of last year's harvest. Cloudy and rainy weather provokes the development of the disease, as well as watering with cold water. To prevent the development of the disease, you can use the following folk remedies.

Serum is taken, which is diluted with water in a ratio of 1:10. Processing promotes the appearance of a protective film on the plant. You can add 10 g copper sulfate to the serum (3 l). This amount is required for dilution in 7 l of water. The use of tansy, nettle, wormwood (100 g of grass and one liter of water) will allow you to prepare an effective broth.

Also, good results are obtained by using mullein infusion (1 liter is taken for 3 liters of water). It is infused for 3 days, and then the filtered composition is diluted in 3 liters of liquid.

It is possible to carry out the treatment with an ash solution. Good results can be obtained by treating cucumbers with this composition: 4 g of soda, laundry soap and 1 liter of liquid. Plants should be processed in the evening.

A rather effective remedy is an infusion prepared on the basis of finely chopped 30 g of garlic, which must be infused in 1 liter of liquid for a day. The resulting composition is diluted in 9 liters of water. When new foci of the disease appear, the treatment is repeated. Plants can be treated with potassium permanganate solution.

Effective measures to eliminate white rot

A disease such as white rot has the ability to damage the leaves of a plant with a white bloom. Professional gardeners recommend that you immediately start processing cucumbers.

If this is not carried out in a timely manner, then the disease spreads to both leaves and stems. Such plaque can cause the plant to rot in general. Pathology spreads quickly enough when plants are planted close enough to each other in a greenhouse and there is insufficient air circulation.

At the first symptoms of the disease, it is necessary to disinfect the soil or greenhouse on time. To do this, prepare a specially designed mixture. It is prepared using two grams of copper sulfate and ten grams of urea. All this must be diluted in ten liters of liquid. Before you start processing the plants, the resulting mixture must be shaken.

Elimination of brown spot by folk methods

Brown spot or leaf mildew is considered a fungal disease. It can damage cucumbers. The first symptomatology of pathology manifests itself during the flowering period of the plant. Light olive spots appear on the upper side of the lower leaves. They turn yellow as the pathology develops. On the underside of the leaves there is a light gray bloom. Due to pathology, the leaves can dry out.

Especially the disease spreads with high humidity. This pathology can affect crops, both in greenhouses and in the open field. The affected plant can be treated with copper-containing fungicides.

In order for the drug to adhere perfectly to the plant, a small amount of liquid soap must be added to its composition. You can replace it with dishwashing liquid. It is necessary to process the plant against cladosporia in two stages. The interval between them should be from 7 to 10 days.

Effective measures to combat root rot

Such an ailment affects plants due to the regular abundant watering of the plant with cold water. The consequence of the disease is high humidity in the greenhouse and significant soil temperature. Diseases can be recognized by small cracks. They are treated with an ash solution with the addition of 5 grams of copper sulfate.

If the disease is started, then the treatment of cracks with activated carbon, dry chalk, ash will be effective.

Experienced gardeners recommend using folk remedies. So, the stems of plants are treated with a prepared mixture in a ratio of 1: 2 of water and iodine. They work with this solution every 3-4 days. It is effective to use milk formula (1 liter) with iodine (30 drops). All this is mixed with 15-20 g of crushed soap in 10 liters of water.

Spider mite and its treatment

An equally dangerous infectious disease is the spider mite, which can have a specific color: yellow, brown, green. The pest (1-2 mm) is located on the back of the leaves. It sucks out the juice, leaving holes in the cucumbers.

Garlic solution (50 g minced garlic and 0.5 L of water) is a good remedy. The mixture should be infused. Then it is filtered off and mixed additionally with the same amount of H2O.

Good results are obtained by using a composition based on chopped hot pepper. It is poured with a small amount of water and simmered on the fire for an hour. The resulting mixture must be diluted in a 1: 3 ratio. Tobacco dust has also proven itself, with which pre-moistened leaves are powdered.

Destruction of melon aphids

A great danger for cucumbers is a melon aphid. It can be fought with the use of the following composition: five liters of water, two hundred grams of ash and ска a bar of grated laundry soap. A sponge dipped in the composition is used to wipe the affected parts of the plant, and it is also applied to the soil near the bushes to scare off ants.

The leaf treatment also works great if you take 2 liters of H2O and 40 ml of 9% vinegar. In the evening, plants can be treated with a dairy composition of 500 liters of milk, 10 drops of iodine and 1 liter of water. You can use 60 g of baking soda, diluted in 10 liters of water.

Ways to prevent anthracnose

Basically, the disease threatens the cucumbers planted in the greenhouse. Spores of the fungus spread at an increased rate on the affected areas of plants. They focus in circles. As a result, they have the ability to merge. The spores are found in seeds obtained from infected fruits.

You can effectively destroy the disease using a 5% solution of copper sulfate. After that, honey, lime and coal should be applied. You can also treat plants with Bordeaux mixture. These measures are taken 4-5 days before harvest at weekly intervals.

A suspension of bleach is used at the rate of 35-40 g per bucket of water. Processing 20 days before harvesting the fruits with a frequency of 10 days.

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