Measures to combat the tick on cucumbers. The main enemy of the greenhouse cucumber

Since it is very difficult to comply with high requirements for the microclimate in greenhouses, pests and infections sometimes develop in them. The reason for the appearance of pests and the activation of pathogens can be incorrect temperature conditions, inappropriate air humidity, untimely harvested plant residues, excess or deficiency of fertilizers and contaminated soil. In this article, we will tell you where does the spider mite come from on cucumbers in the greenhouse, what means are used to destroy it and what preventive measures will help protect the greenhouse from this pest.

Description of the pest

spider mite - an arachnid arthropod of red, orange, yellow-green or whitish color, usually less than 1 mm in size. These sucking pests settle on the underside of the leaves and feed on the cell sap of the plant. Ticks are incredibly prolific: in one season they can give up to 20 generations. The main danger of these pests is that they are carriers of the cucumber mosaic virus.

As soon as spider mites appear in the greenhouse, they spread very quickly, and as a result of their vital activity, the leaves of the plants are depleted, dry and die, which negatively affects both the development of cucumbers and their fruiting. The most comfortable temperature for these pests with an average indoor humidity of 23-33 ºC, that is, greenhouse conditions are just perfect for spider mites.

Signs of the presence of mites on cucumbers are:

• discolored dots and spots on the leaves;
• barely noticeable web;
• slow growth and development, yellowing and drying of the leaves of the plant.

Prevention of spider mites on cucumbers in a greenhouse

If you don't want to fight ticks on cucumbers every year, take preventive measures:

• at the beginning of each season, disinfect the greenhouse with a sulfur bomb: this way you will save the room not only from ticks, but also from other pests, as well as fungi and viruses;
• after harvesting, remove all plant debris from the greenhouse, and at the beginning of the next season, change the top layer of soil 20 cm thick on the beds;
• alternate beds of cucumbers with beds of tomatoes: on tomatoes, mites do not multiply so quickly;
• plant marigolds between the bushes, the smell of which ticks do not tolerate;
• regularly fight weeds and take them out of the greenhouse: it is on weeds that pests settle first;
• strictly observe the agricultural practices of the culture and try to leave slightly larger gaps between the rows so that the ticks do not spread so quickly;
• maintain high humidity in the greenhouse - 80-85%. For cucumbers, this is a normal level, but ticks with such indicators will be damp;
• regularly inspect the plants so as not to miss the moment when ticks appear: the sooner you find them, the higher the chance to get rid of them quickly;
• if ticks are found, immediately start processing cucumbers with folk remedies: plants are sprayed every two weeks, and if ticks have bred, weekly treatments will be required;
• spider mites can be destroyed with the help of their natural enemies phytoseiulus - predators among ticks, it is enough to spread several leaves with phytoseiulus around a bush affected by mites;
• if folk remedies could not rid the cucumbers in the greenhouse of spider mites, use acaricidal preparations.

Folk methods for the destruction of spider mites, of course, are not as effective as chemical acaricides. The advantage of herbal preparations is their low toxicity to humans and the environment, so in the case when there are few pests, try to do without chemistry. In the fight against spider mites, you can help:

• a solution of 30 ml of ammonia in 10 liters of water: wipe the cucumber leaves and spray the greenhouse with the solution;
• wormwood infusion: pour 800 g of dry wormwood grass into 10 liters of water, leave for 2 days, then boil for half an hour, cool, strain and dilute 1: 1 with water - this composition will help you get rid of many pests in the greenhouse;
• decoction of tomato tops: pour 4 kg of chopped tops into 10 liters of boiling water and simmer for 30 minutes, then strain, add 30 g of grated laundry soap for every 2 liters of decoction and stir well - the decoction is effective against ticks and aphids;
• garlic infusion: insist 150 g of dry leaves and garlic husks in 10 liters of water for a day, strain and immediately process the bushes;
• mustard infusion: pour 200 g of mustard powder into 10 liters of water, leave for half a day and strain;
• infusion of potato tops: pour 1.5 kg of chopped tops for 4-5 hours with a bucket of water, strain and use for spraying.

Treatment of cucumbers from a tick in a greenhouse with chemicals

Since ticks are not insects, but arachnids, not insecticidal, but acaricidal chemicals are used to destroy them, the most effective of which are:

plant pin- an agent for combating ticks and aphids, which is produced in the form of sticks: they are stuck into the soil around plants, during watering they dissolve and release the active substance butoxyraboxime, which affects ticks. The drug is intended for the destruction of pests at an early stage of plant damage, the protection period is 1-1.5 months;

The spider mite is an insect that settles on cucumbers and infects them, thereby destroying vegetable crops. Spider mite very quickly gets used to many chemicals. For this reason, it is often difficult to remove an insect. We will present the most effective means than treating cucumbers from spider mites in a greenhouse in order to quickly eliminate the tick.

Signs of a pest

There are several signs that can tell about the defeat of the culture. These should include:

• the appearance of light dots on the leaves, and if the pest infects cucumbers for a long time, then spots appear on the plant on the back;
• there is a web on the plant, it is almost invisible;
• vegetable crop noticeably slows down its growth;
• the leafy part begins to turn yellow quickly.

When the first signs of damage to the plant by the pest appear, treatment of the plant with agents against spider mites should be started as soon as possible.

The main actions for the defeat of cucumbers

Before you figure out how to treat cucumbers from spider mites in a greenhouse, you should learn more about how to act if the first signs of pest damage appear. In order to choose the right means for processing, it is necessary to find out the degree of damage to the plant.

How to proceed:

1. Emergency action. If the summer resident finds completely yellowed leaves, they are cut and burned, the completely dead plant will have to be dug up. Such actions will help stop the spread of the pest to other crops.
2. Hand tools. Solutions such as hydrogen peroxide, turpentine or ammonia can only be used if the tick has settled in cucumbers not so long ago, and the pest has not severely damaged the plant.
3. Decoctions. This tool is very effective for serious damage to the plant. If the leaves began to turn yellow and dark spots form on them, this indicates the need for treatment with chemicals or weed infusions. There are many special infusions and decoctions that contain toxins that are dangerous for ticks.
4. Biopreparations. You can buy special preparations that have natural ingredients in their composition. They are used for three or four treatments. Such biological products help to quickly destroy pests on cucumbers.
5. Acaricides. The funds should be used when the problem is running, as they are strong enough and perfectly fight the development of ticks.

Chemical Methods

If the summer resident is faced with the question of how to treat cucumbers from spider mites in a greenhouse, you should turn to chemicals that can be purchased in stores.

According to experts, a very effective way is to fumigate a greenhouse with sulfur, this method gives a positive result in a short time.

And to spray cucumbers, you should use drugs such as:

1. Actellik. Helps to fight adult ticks, and is considered one of the most effective drugs for the destruction of this pest. This drug is classified as dangerous, therefore, when using it, the use of protective equipment is required. The effect of the remedy lasts about twelve days.
2. Karbofos. Such a drug is strictly prohibited for use when ovaries and flowers appear. A good result can only be achieved if the insecticide gets on the insect.
3. Demitan. The drug belongs to acaricides, while it protects the plant from within forty days after treatment. To remove spider mites, the product can be combined with other chemicals. It is worth noting that Demitan is dangerous to humans.

And how do you process cucumbers from spider mites?
Vote

Effective folk remedies

There are a number of folk remedies that help fight this pest. The most effective ones include decoctions from:

• marigolds. Flowers are placed in a bucket, it is necessary to fill the container halfway, then pour the plants with warm water. Leave the remedy to infuse for two days. After that, the solution should be filtered and add 40 grams of laundry soap to it. Plants are sprayed with the resulting product;
• potato tops. About a kilogram of potato tops is taken and placed in a bucket, the product is left for four hours. After this, planting in the greenhouse is treated with a filtered solution;
• tomato stalks. 4 kilograms of tops are used, they are poured with ten liters of water and moved to the stove to prepare a decoction. Boil the composition for about half an hour, then filter and add 40 grams of laundry soap.

Whatever measures are taken by gardeners, from year to year they face many problems, the first place of which is occupied by pests. These creatures, living on the plants themselves and in the soil, degrade the quality and quantity of the crop, causing damage to the root system, leaves and shoots. Numerous insects can damage cucumber plantings, among which you should pay special attention to the destruction of the spider mite.

What is a spider mite?

This insect pest is red, orange, green-yellow or milky-transparent in size up to 1 mm. Some individuals reach sizes of 2 mm, but this is extremely rare. The spider mite has an elongated, elliptical body shape. The females are orange-red in color and are very prolific. Each female can lay 8,000 eggs in one season.

The period from an egg to a sexually mature individual takes only a few days, and if this pest is not destroyed on time, the crop will be completely destroyed. Due to their very small size, the spider mite is very difficult to detect at the time of settlement on the site.

Insects settle in conditions that are comfortable for them, mainly on the lower part of the leaf of the plant, but then they can occupy large areas of culture. You can recognize the life of a spider mite by marks on the leaves - small light dots.

At first, these are small settlements of pests, but soon the mites can flood the entire greenhouse, as they multiply quickly enough. Already a week after the appearance on one plant, they can be found not only in the tracks, but also in a living form, crawling along the leaves. After a while, a web appears, in which young and rapidly developing colonies are located.

Reasons for the appearance

What are the reasons for the appearance of spider mites on cucumbers? The pest appears and actively reproduces only in favorable conditions for it - high temperature and dry air. Ticks hibernate in fallen leaves, topsoil, manure and greenhouses (especially in the corners). The most unpleasant thing is that it is impossible to protect the crop from the appearance of a pest - it can get on seedlings even with a gust of wind. The only way out is to carry out the usual agrotechnical measures in order to prevent the appearance of the spider mite.

What harm do mites do to cucumbers?

Getting into the greenhouse structure, insects quickly spread over its area, immediately occupying more convenient crops, one of which is just cucumbers. Insects feed on the juice of plant cells, due to which the leaves are depleted, begin to dry out and lead the plants to disease and death.

It is worth noting that the females are very active, and after 3-4 days they will lay eggs, up to 400 pieces each. There can be up to 20 development cycles per year, and the most suitable climate for this is + 23 + 33 ° С and average humidity in the greenhouse. As you can see, the greenhouse is simply ideal for the life of these pests.

The following signs indicate the appearance of a spider mite on cucumbers:

• light dots (with a large lesion - spots) on the back of the sheet;
• almost transparent cobweb on the plant;
• growth retardation;
• yellowing of leaves.

Fighting methods

Before resorting to "chemistry", you can try to influence pests with folk recipes. At the initial stages, when the infection of plants is not started, these methods give a good effect. There are plants that repel cucumber mites. They contain specific poisons. Most often, infusions of them are used for preventive spraying. However, do not exceed the dosage, as this can damage the plants.

To combat the tick, 96% alcohol is suitable. Under no circumstances should industrial alcohol be used. Otherwise, you will ruin the entire crop.

How much alcohol is needed depends on the degree of damage to the plant. If only the leaves are damaged, then only them need to be sprayed. If many neighboring plants are affected, then it is better to spray the entire area extensively. If this is a greenhouse, then you need to spray in it.

Spraying with alcohol is one of the folk methods of pest control.

After one week, it is necessary to repeat the spraying procedure. When the temperature drops, this procedure can be carried out after 10 days.

The final stage is made in 8-10 days. After that, the plant should be carefully observed (whether the symptoms of the tick reappear).

Moss will help to effectively deal with spider mites. To do this, it must be doused with boiling water and dried. When the moss becomes dry, it can be placed in the soil under the plant itself.

The same can be done with tree bark. To do this, it must be thoroughly washed and dried in a microwave or oven. After that, dry bark can be placed in the ground. The fight against spider mites is very difficult, but this does not mean that every fight will be lost. It is necessary to act correctly, not to feel sorry for the enemy. We wish you good luck!

Useful plants

• Marigold

1. Pour 1/2 bucket of dried flowers with warm water and soak for 2 days.
2. Add 40 g of laundry soap to the filtered infusion.
3. Spray cucumber plantings in the evening.

• potato tops

Destroys not only spider mites on cucumbers, but also fights against aphids and caterpillars.

1. 1.2 kg of fresh tops insist in a bucket of warm water for 4 hours.
2. Moisten the affected plants with this solution.

• tomato greens

1. Pour 4 kg of tops with 10 liters of water and boil for 30 minutes.
2. Add 40 g of laundry soap to the solution.
3. Dilute this concentrate in half with water and process the plants.

• Aconite nosy. Roots and tubers, roots and grass insist in 70% alcohol. The extract is diluted with water in a ratio of 1:10 before use, and then used against spider mites. Plants are harvested during the budding period.
• hogweed(Caucasian, Siberian, bearded; fluffy montigation, spotted). Against the spider mite, infusions of its dry leaves, stems and roots are used (leave 1 kg per 10 liters of water for 24 hours). Infusion recipe: crushed green parts are ground in the form of a slurry with water (1 kg of plant per 2 liters of water). The liquid part is squeezed out, the pomace is poured into 15 liters of water, and after infusion for 6-12 hours, the liquid part is again separated and mixed with the solution obtained earlier. Raw materials are harvested before and after flowering, and during flowering - only the aerial part.
• Gorchak creeping. Against the spider mite, its infusions or decoctions are used. Infusion recipe: pour dry crushed plants for 24 hours with water (120 g per liter) or boil for 30 minutes after 6-8 hours of infusion. The liquid part is drained and diluted twice with water before use. The aerial part or the whole plant is harvested during flowering.
• Datura vulgaris. Its water infusions and decoctions are also used against spider mites. Infusion recipe: finely chopped dry plants (100 g per 1 liter) or finely ground powder from a dry plant (50 g per 1 liter) are poured with water for 12 hours. The liquid is then filtered. Decoction recipe: boil for 2-3 hours in a small amount of water 1 kg of dry green parts of the plant (or 2.5 kg of dried or 3 kg of fresh plant material). After cooling, strain the broth and add up to 10 liters. During flowering, the entire aerial part of the plant is harvested.
• Carpezium wormwood. Seeds and dry aerial parts of plants are infused for 12-24 hours in water in the amount of 70-100 g per 1 liter, the filtrate is used to treat plants affected by spider mites. Harvesting of plants is carried out during the growing season, and seeds - after ripening.
• Oriental goat's rue. Infusions of dry milled plants (90-100 g/l) after 24-hour exposure and filtration are used in the fight against spider mites. Harvesting of plants is carried out during the growing season.
• Manchurian clematis. Water infusions of fresh leaves (50-100 g/l) are effective against spider mites.
• Onion. In the fight against spider mites, water infusions of onion scales are used. Onion scales insist 12-15 hours. Concentration - 20 g / l.
• Alder gray, handicraft alder. Aqueous infusions (100 g / l) have a detrimental effect on spider and root mites.
• Feverfew meat red (Caucasian chamomile), feverfew pink, dalmatian chamomile. All plant mites are killed by 2% aqueous suspensions of chamomile powder.
• cyanosis blue. Infusion of dry roots of 10% concentration is effective against spider mites.

What else needs to be done to defeat the spider mite:

• Clean greenhouses and greenhouses from plant residues and destroy them.
• Dig up the soil.
• Carefully destroy weeds in the ridges and around greenhouses.
• Rinse boxes and frames with a 10% solution of caustic soda or iron sulfate before laying greenhouses.
• Collect and burn single damaged leaves.
• Spray infusion of onion or garlic scales (200 g).
• Treat with 70% colloidal sulfur (50-100g), celtan (20% a.e., 20g) in open and protected ground.

Why is it so difficult to get rid of spider mites?

Most gardeners who are faced with this problem claim that even chemicals and herbal decoctions do not always help in the fight against them. This is due to the high resistance of spider mites to insecticides. Note. Spider mites easily get used to and adapt to almost all poisons.

The complexity of the fight against ticks is also associated with such factors:

For preventive purposes, you can also use the above folk remedies. This will prevent the appearance and spread of spider mites on cucumbers. Well, if it was not possible to avoid infection, then you should not delay the treatment of plants, otherwise you can lose the entire crop in a short time.

Preventive measures:

• Alternating plantings of cucumbers with tomatoes, since mites do not develop on tomatoes. That is, if too many mites have developed on cucumbers in a garden or greenhouse and you cannot get rid of them, next year tomatoes should be planted in this place. Since mites do not live on tomatoes, they will completely disappear in a season;
• Timely weeding and proper care of plants: watering, fertilizing, loosening the soil, removing old leaves, etc.;
• Planting with a significant distance between plants to make it difficult for ticks to move. It is better to alternate beds with cucumbers with beds on which other crops will grow. In this case, if ticks start on one of the beds, the others will not suffer. At a close location, all cucumbers can be infected in a short time;
• Cleaning a greenhouse or garden in the fall from all garbage, rags, plant residues that must be burned. In addition, a greenhouse or hotbed can be disinfected, for example, with the help of sulfur checkers FAS or Climate;
• Deep digging of the soil, preferably in the autumn;
• The creation of high humidity (80% and above), for plants it is considered optimal, and for ticks - unfavorable;
• Examine plants for mites.

Agrotechnical methods are the best prevention of infection of cucumbers with mites, as it is better to avoid the appearance of these arachnids. This is due to the fact that if they are wound up, it is very difficult to get rid of them.

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Spider mite on cucumbers - how to deal with a pest with chemistry and folk remedies

Spider mite on cucumbers in a greenhouse appears more often than on open, unprotected beds. Inside greenhouses and greenhouses, the most favorable conditions are created for its development and reproduction. Therefore, it is necessary to protect the vegetable crop from the attack of a dangerous pest that can destroy the crop.

Spider mites on cucumbers are very difficult to spot. The size of this insect is about 1 mm. The color can be different: milky whitish, yellowish green, reddish orange. After penetrating the greenhouse, the tick first approaches the bushes, which have the largest and juiciest greenery. Sucking the juices from the cells of the plant, leads to its drying and death.

Is it possible to recognize the signs of the appearance of a pest? The pest is most often localized on the inside of the leaf, since it is there that the most nutrients are located. You can recognize a tick on cucumbers in a greenhouse by the appearance of the plant. Moving along the leaf, they leave gray-white spots, which eventually turn into white stripes. The tick, destroying the cells and vessels of the plant, leads to a stop in its growth. The cucumber leaf turns yellow and curls.

After 2-3 days, the pest females begin to lay eggs, the number reaches up to 400 pieces. And after 7-8 days, the number of insects increases significantly. If a web began to be observed on cucumbers in a greenhouse, then this is a sure sign of the appearance of a whole colony of insects.

Ticks unfold their vigorous activity if it is warm and dry. For the winter, the tick burrows into the foliage, into the remains of the tops after harvesting, hides in the corners of the greenhouse or manure. It can be carried by gusts of wind. For the human body, this small insect cannot cause harm, but it can destroy all cucumber beds. The insect, devastating the inside of the leaves, leads to a decrease in immunity.

Various diseases of cucumbers develop in the greenhouse. Their treatment begins with the complete destruction of pests.

Most often, the mite becomes the cause of the development of gray rot. Large brown spots are found on the leaves, and a gray coating appears on the fruits. You can treat rot in a greenhouse with chemicals (Hom, Oxy), you can use biological products (Sodium Humate, Stimpo) or use folk methods (iodine or soda solution, composition with whey).

How to deal with spider mites on cucumbers

It's pretty hard to get rid of it. Sometimes, the methods that helped before cannot cope again. Therefore, when answering the question of how to save the crop, it is easier to carry out preventive control methods.

Spider mite reduces the yield or leads to its complete loss. The taste of ripe fruits deteriorates, the shape is deformed. Cucumber beds where the tick has settled are more likely to get sick, so it is so important to know how to deal with it.

1. Before sowing seeds, it is recommended to dig up the ground, as mites can overwinter in the surface layer of the soil.
2. It is best to choose varieties of cucumbers that are resistant to diseases and pests.
3. When planting seedlings, it is recommended to alternate the beds of cucumbers with tomato bushes. A tomato garden will protect against the rapid spread of the pest.
4. You need to fight weeds.
5. Watering should be observed. Humidity inhibits the reproduction of insects.
6. It is useful to loosen the soil. The procedure that makes the plant strong is best done after watering. Loosening will allow better flow of oxygen and nutrients to the roots.
7. It is necessary to apply fertilizers in a timely manner. This will increase resistance to diseases and resist the invasion of pests.
8. Fight the invasion of pests and with the help of mulching.
9. Be sure to periodically inspect the plants. What to do if a spider mite is found on cucumbers? If a small number of leaves with mites are found, they must be plucked and burned, and the beds should be treated with any prophylactic agent.
10. The tick loves asters, so this type of flower cannot be planted with cucumber beds.

Measures to combat spider mites on cucumbers in a greenhouse are as follows:

• it is recommended to observe high air humidity; for ticks, humidity of about 80% is considered an unfavorable environment;
• be sure to disinfect inventory and the entire structure;
• it is recommended in the fall, after harvesting, to replace the topsoil;
• soil fertilization with phosphorus elements.

Prevention of spider mites is also carried out using folk formulations. The compositions will help not only protect the plants from ticks, but also help enrich the soil with nutrients.

To prevent spider mites on cucumbers in a greenhouse, you can use the tops or stepchildren of tomatoes. Greens are poured, put on fire, brought to a boil and then boiled for another 30 minutes. 50 g of crushed laundry soap is added to the finished solution. Before watering or spraying, the resulting solution is diluted with water.

Popular chemicals

The fight against spider mites on cucumbers can be carried out with store-bought chemicals. There are proven and effective chemicals than to treat cucumbers from spider mites.

The drug Fitoverm will help answer the question of how to deal with spider mites on cucumbers. In a bucket of water, add 10 ml of the drug. Protective properties remain for three weeks, but on condition that there will be no heavy rains. The only drawback is that the solution is addictive, so they can not remove pests several times per season.

Iskra-Bio is considered a safe preparation for spider mites in a greenhouse. It is not addictive and is able to quickly destroy the spider mite. The composition contains potassium components that help the damaged plant recover. After treatment with a solution, you can enjoy the cucumber in two days. In 1 liter of water, dilute 1 ml of the drug.

Against spider mites use Plant-Pin or Etisso sticks . They are planted in the soil next to the cucumbers. During irrigation, substances that destroy insects begin to fall into the ground. Protection with drugs is provided for 1.5 months.

Karbofos is a highly effective remedy for controlling spider mites on cucumbers in a greenhouse. You can apply many times, but observing an interval of a week. Be sure to spray not only the outer, but also the inner part of the leaves. Take 40 g of the drug and dilute in 10 liters of water.

Insecticide control methods are considered the most reliable, but care must be taken. When diluting drugs and using them, the instructions and safety rules must be strictly observed. Vapors of solutions can lead to poisoning of the body. Therefore, when treating the beds with chemical solutions, you need to use personal protective equipment.

Processing of vegetable beds should be carried out in clear, dry weather, without wind or in the evening, but only if there is confidence that there will be no rain in the next hour. The last treatment with chemicals is carried out two weeks before the expected mass harvest. During this period, all poisonous vapors will have time to disappear from the plant.

How can you prepare the composition yourself

How to get rid of spider mites on cucumbers without chemical additives using folk remedies? On your own at home, you can prepare compositions for cucumber seedlings from natural and safe ingredients, following the recommendations of well-known recipes.

Remedies for spider mites on cucumbers based on onion peels help. It is poured with water and left to infuse for a whole day. The resulting solution can be sprayed on the green part of the vegetable crop.

To completely get rid of insect pests, folk remedies are used with the inclusion of an alcohol solution. From a tick, ammonia is often used. In a bucket of water, dilute 30 ml of ammonia. The resulting solution can wipe the leaves of the plant and process the design of the greenhouse. You can spray the leaves on both sides. Ammonia is harmless to the plant and is perceived as a nitrogen fertilizer.

How to deal with cobwebs on cucumbers in a greenhouse

Dandelion or calendula will help. Calendula flowers in the amount of 400 g are poured with two liters of water and left to infuse for five days. Before use, the infusion is diluted with water. Dandelion leaves should be poured with 10 liters of water and it is enough to infuse for two hours.

Cucumbers in the greenhouse can be treated with yarrow infusion. You need to collect the yarrow and dry it. For 2 liters of boiling water, you need to take 1 kg of dry grass. Should insist two hours. After that, you need to dilute the resulting infusion with 10 liters of water and leave for another two days.

Garlic is able to remove the spider mite for a long time. Garlic cloves (100 g) must be crushed and pour boiling water (10 l) for 30 minutes. After insisting, you can use the composition for its intended purpose.