How to get rid of spider mites on cucumbers, the main control measures — Vegetables

Spider mite on cucumbers: how to deal with dangerous greenhouse pest

Contents

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

What does a spider mite look like?

Spider mite on cucumbers is very difficult to notice. The size of this insect is about 1 mm. The color can be different: milky-whitish, yellowish-green, reddish-orange. After penetrating into the greenhouse, the mite first comes up to the bushes, which have the largest and most succulent greens. Sucking juices from plant cells, leads to its drying out and death.

Is it possible to recognize signs of a pest? The pest is often localized on the inside of the leaf, since it is there that contains the most nutrients. Recognize mites on cucumbers in a greenhouse can be on the appearance of the plant. Moving on the sheet, they leave gray-white spots, which eventually turn into white stripes. Mite, destroying the cells and vessels of the plant, leads to a halt of its growth. 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 in 7-8 days the number of insects increases significantly. If the 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 unleash their activity if it is warm and dry. In winter, the tick buries itself in foliage, in the rests of the tops after harvesting, hides in the corners of the greenhouse or manure. Can be carried by gusts of wind. For the human body, this small insect can do no harm, but it can destroy all cucumber beds. Insect, emptying 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 tick becomes the cause of the development of gray rot. Large brown spots are found on the leaves, and a gray bloom appears on the fruit. To treat rot in a greenhouse environment, you can use chemicals (Chom, Oxy), you can use biologics (Gumat Sodium, Steampo) or apply traditional methods (iodine or soda solution, the composition with whey).

How to deal with spider mite on cucumbers

Get rid of it is quite difficult. Sometimes, the methods that helped before, can not cope again. Therefore, answering the question how to save the crop, it is easier to carry out preventive methods of struggle.

Spider mite reduces the yield or leads to its complete loss. Tastes of ripe fruit deteriorate, form is deformed. Cucumber beds on which the tick settled, often suffer, so it is important to know how to deal with it.

  1. Before sowing seeds, it is recommended to dig up the ground, as ticks can overwinter in the surface layer of the soil.
  2. It is best to choose cucumber varieties that are resistant to diseases and pests.
  3. During planting, it is recommended to alternate cucumber beds with tomato bushes. Tomato bed will protect from the rapid spread of the pest.
  4. Be sure to fight weeds.
  5. It is necessary to observe the mode of watering. Humidity prevents insects from growing.
  6. It is useful to loosen the soil. The procedure that makes the plant strong, it is best carried out after watering. Loosening will allow a better supply of oxygen and nutrients to the roots.
  7. It is necessary to make fertilizer in a timely manner. This will increase disease resistance and resist the pest invasion.
  8. They fight pest infestation and mulch.
  9. Be sure to periodically inspect plants. What to do if a spider mite showed up on cucumbers? In the case of the discovery of a small number of leaves with mites, they must be plucked and burned, and the beds must be treated with any prophylactic agent.
  10. Mite loves asters, so you can not plant this type of flowers with cucumber patches.

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

  • It is recommended to observe high humidity, for ticks, an adverse environment is considered to be about 80% humidity,
  • be sure to disinfect the inventory and the entire structure,
  • It is recommended in the fall, after harvesting, to replace the top layer of soil,
  • soil fertilizer with phosphate elements.

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

To prevent spider mites on cucumbers in the greenhouse, you can use tops or tomato stepsons. Greens are poured, put on the fire, brought to a boil and then boiled for another 30 minutes. In the ready solution add 50 g of chopped laundry soap. 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 chemicals purchased in the store. There are proven and effective chemicals than to treat cucumbers from spider mites.

A proven remedy for spider mites on cucumbers is Aktara. After only 30 minutes, the parasites lose their ability to suck the juices and begin to die. For watering cucumber beds, it will be necessary to dilute 3 g of the drug in 10 liters of water, if it is supposed to be sprayed, then take 8 g.

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 persist for three weeks, but on condition that there is no heavy rain. The only drawback is that the solution is addictive, so they can not remove pests several times during the season.

Iskra Biot 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 restore the damaged plant. After treatment with the solution, you can enjoy the cucumber in two days. In 1 liter of water should be diluted with 1 ml of the drug.

Plant Pin or Etisso are used against spider mites. They are set in the soil next to the cucumbers. During irrigation, insects are destroyed by insects. Protection by drugs is provided for 1.5 months.

Karbofos is a highly effective tool for controlling spider mites on cucumbers in a greenhouse. You can apply many times, but observing the interval in 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 diluted in 10 liters of water.

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

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

Means to combat spider mite in a greenhouse with cucumbers

In greenhouses from polycarbonate, glass, in greenhouses, thermoses and other types of similar structures, infections and pests are very often infused. This is due to the high requirements for the microclimate of the greenhouse, which is quite difficult to comply with.

In general, there are a lot of reasons, but today we are not looking for them, but for methods of dealing with spider mites in the greenhouse.

What is a pest

This insect pest is red, orange, green-yellow or milky-transparent in color up to just 1 mm. Some individuals reach sizes of 2 mm, but this is extremely rare.

Insects settle in conditions that are comfortable for them, mainly on the lower part of the plant leaf, but then they can occupy large areas of culture. Recognize the vital activity of spider mites can be on the labels on the leaves — small bright dots.

Spider mite

At first, these are small settlements of pests, but soon the ticks can flood the entire greenhouse, as they multiply quickly enough. Already a week after appearing on a single plant, they can be found not only by 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.

What harm does cucumber do

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

In the year of development cycles can be up to 20, and most suitable for this is a suitable climate of + 23 + 33 ° С and average humidity in the greenhouse. As you can see, the greenhouse is just perfect for the vital activity of these pests.

How to deal with spider mite in a greenhouse

I would like to say that it is very simple, but we can not, because many of the usual ways of dealing with insects and methods of prevention simply do not save.

According to the statements of many summer residents, and according to their own observations, spraying with water, which could raise the humidity, does not help, ultraviolet radiation, tinctures on the husks of onion or garlic, as well as household soap will not save either.

In general, it is necessary to look for more effective means from the tick, otherwise you can lose the crop in the greenhouse in two accounts.

It is necessary to remember once and for all that any insect is able to adapt to the preparations, and therefore an integrated approach should be applied, and not to try to remove the pest from the greenhouse for years with a well-advertised tool that does not help already from the second or third time.

Drugs for sale than to process

Immediately we want to note that some of them are extremely effective, others have a weak effect. Much here depends precisely on the time of infection of the greenhouse, pretreatment preparations, quality of processing and other conditions.

Plant pin. A special tool for controlling many pests, which is more aimed at the destruction of ticks and aphids. The drug is produced in the form of sticks, which are immersed in the soil near the stem of the plant. During irrigation, the active substances dissolve and begin to act, and therefore, in the early stages, you can effectively fight insects.

The impact on the tick occurs in 2-3 days, the total period of plant protection is up to one and a half months.

Ethisso. The drug, which is produced in the same form as Plant Pin, and is also used. The main difference is the active substance. If in Plant Pine it is butoxyraboxime, then in Etisso it is dimethoate.

The submerged stick of this agent is dissolved by water during the watering of the plant, penetrates into the aerial part and poisons insects that feed on the sap of the cultivated plant.

The result of the life of the colony mite colony in the greenhouse

Be careful, drugs are toxic. After use, be sure to discard the gloves in which you worked, and wash your hands well with soap and water!

Actellic. Effective plant treatment that needs to be used very carefully, in a gauze bandage and gloves.

Fitoderm. Excellent drug, but, unfortunately, causes the so-called addiction in insects. That is, if you work with it incorrectly, then the tick simply adapts to the fittower and does not react to it at all. But if you notice the affected plants in time, and process them for three weeks 3-4 times, using the tool strictly according to the instructions, you can achieve a positive result.

In addition to these drugs, you can always find on sale and others — BI-58, Vermitek, Actofit, Appolo, Flumayt. But note, some do not act on the eggs and nursing females, and therefore may be less effective in the integrated fight.

Problems of fighting the parasite

Trying to destroy pests in the country, in a greenhouse or in the open field, you can face serious problems that will prevent a high-quality and effective fight:

  • Difficult problem detection, although it is this that is most important for an effective “war”
  • The rapid reproduction of the tick, whose population grows much faster than many summer residents poison pests,
  • The inefficiency of many drugs, as well as the high ability of insects to adapt,
  • The need for frequent treatments, because for 1-2 times the tick does not kill, especially if the females have already laid thousands and thousands of eggs,
  • The need for complete destruction of the population, otherwise you can get a huge number of adapted to the used insects,
  • Cobwebs — a way to move insects, as well as excellent protection from moisture and solutions with effective drugs,
  • The need to use shock doses, and often, dacha-beginners use money sparingly,
  • The need for a high concentration of drugs that are dangerous to human and animal health, as well as infection of the fruits of cultivated plants.

The fight against spider mites is very difficult, but this does not mean that every battle will be lost. Try to act correctly, do not feel sorry for the enemy and repel the remnants of the crop that is dear to you as carefully as possible from insects.

What to do if a spider mite appeared on cucumbers?

Every gardener is faced with different insects. Many of them damage foliage, and also negatively affect the quality and quantity of the crop. This is especially true for spider mites, which are often found on cucumbers.

The insect envelops the plant’s thin web, which is why photosynthesis is disturbed. As a result, the oxygen and the rays of the sun do not fall to the shoots. To avoid unpleasant consequences, you must prepare in advance for pest control.

What you need to know?

The shape of the body of this insect is slightly rounded. If you look in the microscope at a pest, then you can see on its sides a lot of small bristles. Females are significantly different from males. They have a more rounded shape and large size.

Some species have dark spots on the sides. In winter, when the mites no longer receive food, the color changes to bright red or reddish.

The spider mite on cucumbers feeds on the juice contained in the leaves. It may be young shoots and adult cultures. Insects are located on the bottom of the leaves and gradually envelop all the shoots with a semitransparent cobweb.

With the onset of late autumn, the pest is looking for a place suitable for wintering. Some species move deep into the soil, while others go to the upper parts of buildings.

Females of the insect lay eggs on the leaves of plants. During its short life, which is a maximum of 4 weeks, the pest lays at least 100 eggs.

The development of the insect is carried out in stages. These are the following stages:

At all these stages, except for the first one, the nutrition of the young is the sap of the leaves. Accordingly, even at an early stage of development, the spider mite on cucumbers presents a significant danger.

Its ripening period depends on the temperature. So, at + 15º C, the egg phase lasts about 2 weeks. If the temperature exceeds + 30º C, then the phase is reduced. It is a maximum of 3 days.

As a result, the plant is significantly weakened and becomes susceptible to various diseases. It is worth noting that the spider mite belongs to carriers of infection. For example, it can tolerate gray mold spores.

Signs of a pest

In order to timely detect spider mites on cucumbers, it is necessary to regularly examine the plants. The appearance of the insect is indicated by the following factors:

  • Numerous small dots located on the bottom of most leaves. With a significant lesion on the foliage appear large white spots.
  • Translucent thin cobweb on the leaves and stems.
  • Yellowed leaves, on which there is no mite.
  • Slowing the growth of cucumbers.
  • In case of large-scale damage, the shoot is completely covered with a thin web, and moving insects are noticeable at the tips of the leaves.

Such a tick is absolutely safe for humans, but for plants, especially for cucumbers, it represents a great danger.

Methods of struggle

To get rid of the tick, you must first gently wash the plant. Naturally, prickly cucumbers are very inconvenient to wash, so you can replace the spray rinsing. All affected parts are subject to treatment. Most often it is leaves.

Делать этого нельзя, поскольку в составе могут быть вредные компоненты.

  • Значительно поврежденные листья необходимо аккуратно удалить и сжечь. Благодаря этому удастся уменьшить размножение вредителя и ограничить его переселение на другие листья или растения.
  • Сильно пораженные побеги рекомендуется удалять.
  • Во время пасмурной погоды огурцы стоит обильно полить, а затем накрыть пленкой.
  • Due to this, the level of humidity will significantly increase, which the spider mite is very afraid of.
  • In some cases, the use of chemicals is recommended. This may be a solution of Malathion or Intavira. It is important to comply with the dosage specified in the instructions.
  • In the soil, you can make a drug called «Temik.» This is a strong insecticide that will help destroy pests.
  • Recommended spraying phosphorus and sulfur preparations.

Chemical attack

Experienced experts say that spraying various insecticides in the presence of a spider mite is useless. In this case, it is better to give preference to acaricides or insectoacaricides.

It is necessary to carry out the processing of such compounds very carefully. This will require re-treatment, which will destroy the younger generation. It is carried out depending on the temperature:

  • at + 20º C plants are sprayed 3 times with an interval of 9 days,
  • at + 30º C it is necessary to spray 4 times with a break of 3-4 days.

If the air temperature rises significantly, then more treatments will be required with a smaller interval. Otherwise, such a procedure would be useless. This is explained by the fact that literally 3-4 days are required for laying eggs.

Spray the plants need in the evening, when the sun does not bake much. If you do the treatment in the middle of the day, the toxic substances evaporate quickly and will not have a detrimental effect on pests.

Many experts recommend spraying cucumbers as a prophylaxis, because with a significant number of insects the recommended dose will be useless. If you increase it, it can adversely affect human health.

It must be remembered that long-term use of one drug leads to the formation of immunity in spider mites. It is also known that no more than 50% of the pest dies per treatment. This is explained by the fact that the web repels water, and therefore it is rather difficult to achieve a better result.

Common chemicals against spider mites:

Plant pin. The tool is suitable for cucumbers that are grown in the greenhouse. It is enough to stick a special wand into the ground near the escape. When watering, this stick will begin to dissolve, releasing the active substances. The drug is intended for early infection.

Actellic. The drug effectively copes with a spider mite, but it is not safe for humans. Therefore, in the spraying process, you must wear a respirator and gloves. 1 ampoule of substance involves the use of 2 liters of water.

Fitoverm. This is a fairly effective drug that must be periodically replaced with another agent. Otherwise, the pest adapts to it and does not react at all.

Actofit. Such a tool of biological origin is suitable for the destruction of various pests, including spider mites, cabbage whitegrass, Colorado potato beetle, scoop. It can be used to protect various ornamental plants and crops.

Thus, vegetable poisons are often used, which pose minimal danger to humans. Treat plants with such substances need very carefully. It is necessary to adhere to the dosage specified in the instructions.

Folk remedies

To avoid the emergence and active reproduction of spider mites, it is recommended to plant cucumbers together with various flowering plants. This is especially true for marigold and calendula.

Experienced gardeners often use turpentine. It is necessary to pour liquid into the container and place it without a lid near the diseased plant. The escape with a turpentine can is covered with a thick cloth and left for at least 3-5 hours.

Experts often prepare infusions of herbs for spraying:

  1. 200 g of a mixture of garlic and onion peel diluted in 10 liters of water,
  2. 400 g of crushed calendula flowers are mixed with 2 liters of water and infused for 5 days; before using the infusion, dilute with the same amount of water,
  3. 400 g of crushed dandelion leaves are placed in a container with 10 liters of water and left for 2 hours,
  4. in 10 waters pour out 300 g of sorrel roots and leave for 3 hours,
  5. dandelion leaves, onions and garlic are passed through the meat grinder, a glass of such gruel is mixed with a spoon of any liquid soap and diluted in 10 liters of water, after a couple of hours the composition needs to be drained,
  6. 1 kg of dried yarrow pour 2 liters of boiling water and leave for 40 minutes, then the liquid is poured into a container with 10 liters of water and infused for 2 days.

To remove spider mites from the surface of the plant, cucumbers should be washed with warm soapy solutions. For this purpose it is necessary to use only soap. His foam can be left on the escape. This treatment is good with a small amount of spider mites.

The procedure is repeated once a week, due to which the number of insects is significantly reduced, and the resistance of cucumbers to most diseases increases. Such processing should be carried out very carefully, so that the rays hit only the lower surface of the leaves.

Spider mite is a serious pest, so several different means should be used to control it. Even if at the end of the treatment of insects on the plants is not visible, it is necessary in a week to carry out another procedure for preventive purposes.

Precautionary measures

Spider mite is a serious danger for cucumbers both in open ground and in hotbeds. Immediately notice the pest is difficult because it is very small. For this reason, attention must be paid to preventive treatment. This is very important, because the spider mite survives even at sub-zero temperatures.

If cucumbers are planted in a greenhouse, then it must be disinfected periodically. A place for planting seedlings in the garden should be changed every year. It is best to alternate plots where cucumbers and cereals are grown.

In addition, it is recommended to remove various weeds in time, because it is here that the pests begin their reproduction.

General prevention includes:

  • Planting high quality seeds that have been pretreated and disinfected.
  • Sow seedlings need to warm the soil. So, at a depth of 10 cm, the temperature of the soil should be at least + 12º C.
  • For planting cucumbers suitable only clean loose soil.
  • It is recommended to choose cucumber varieties resistant to various diseases.
  • After the end of the garden season, it is necessary to remove the remains of all plant crops. They should be burned.
  • If diseased plants were found on the bed, they must be destroyed.
  • Proper fertilization of the soil and its disinfection is of particular importance.

It must be remembered that all the above-mentioned methods of dealing with spider mites do not always give a positive effect. In any case, the plants should be treated regularly, since the possibility of reinfection of the plants remains in the open ground.

Thunderstorm cultivated plants

Spider mite is a “thunderstorm” of many cultivated plants. This pest is able to destroy the entire crop both closed and open ground.

It is very difficult to fight with him, but in order to start taking active measures to destroy this enemy, the enemy should be “known by sight”.

Appearance

The size of the spider mite is very small. The female has a size of about 0.5 mm, the male — 0.3 mm. If the food is to his taste — then, eating well the juice of cucumber leaves, individual individuals can reach a size of 2 mm.

Each female can lay 8,000 eggs per season. The period from an egg to a mature individual takes only a few days, and if not to destroy this pest in time, the crop will be completely destroyed. Due to the very small size, the spider mite is very difficult to detect at the time of settling on the site.

Signs of appearance

Signs of damage to plants by spider mites, at the initial stage, appear as small, white dots on the inside of a cucumber leaf. When the dots turn into large spots and the plant is wrapped in a white web, then we can speak about a serious damage to the plant, which threatens it with complete destruction.

If the cucumber bush is already beginning to fade, all the leaves have turned yellow, and the plant is shrouded in cobwebs, then in this case the plant must be completely removed from the site. Such a radical method, in many cases, allows you to stop the spread of the pest on the site. This is done as follows:

  • The plant is carefully dug along with the root.
  • The cucumber bush is placed in a plastic bag.
  • The bag with the plant is taken out of the site and burned.

After the affected plant is destroyed, the cucumber plantation is treated with preparations designed to destroy the spider mite. This is done to prevent further spread of the pest on the site.

If cucumbers are grown in protected ground conditions, then changes in temperature, and relative humidity of the air, can significantly stop the reproduction of this pest, and with an integrated approach using acaricidal agents, preferably of plant origin, it is possible to completely destroy the enemy of cucumber beds.

The temperature is required to withstand at the level of + 30-32 degrees, and the relative humidity of air in the range of 80-90%. Under these conditions, the larvae of spider mites stop their development, and the use of chemical preparations completely kills them. You can use time-tested folk remedies to combat this pest.

An infusion of Caucasian Hogweed, is able to completely destroy both mature individuals and tick larvae. Care should be taken when handling this herb, as the plant is poisonous and dangerous to humans.

Preparing infusion in the following sequence:

  1. In a glass or enamel pot, dried grass is infused for 24 hours at a ratio of 1 kg per 10 liters of water.
  2. The solution is filtered through cheesecloth.
  3. Plants are sprayed with the infusion obtained exclusively in the evening.

If the processing occurs during the growing season, then the use of vegetables for food after processing in this way is strictly prohibited.

What to handle for prevention

Than, to treat the disease, it is easier to prevent it. With the defeat of cucumber spider mite, everything is the same way, and the “disease” should be prevented with the help of preventive measures.

In order for cucumbers or other plants in the area not to become a victim of this voracious and numerous insect, it is necessary to carry out the weeding of the area from weeds. For the winter, it is necessary to do a deep digging of the site, which contributes to the destruction of many pests in the frosty winter.

A very good preventive effect gives the attraction of natural enemies of spider mites on the site. Phytoseiulus — this tick is able to find and destroy spider mites at an early stage of plant damage.

Among the traditional means of preventing the spread of the tick, we can recommend the use of dill on the garden beds.

Plants are planted around the perimeter of the cucumber plot. This system of plant protection can be applied both in open ground and in greenhouse conditions.

Beautiful, and flowering cucumber plants on your site can appeal not only to you, but also to every creature that in a matter of hours can destroy the entire crop. Therefore, daily monitoring of the site is necessary in order to identify the pest at an early stage of plant damage.

Pest description

Looks like a spider mite in the photo, you can see on this page. These pests have piercing and sucking mouthparts. They damage more than 190 species of cultivated and wild plants.

Spider mite

They are especially dangerous for cucumber in protected ground conditions, in particular, where the basic requirements for compliance with the necessary cultivation regimes are violated. Populating a sheet from the bottom side, they pierce the tissue and suck out the contents of the cells.

Bright spots and spots appear on the upper side of the leaves, the leaves gradually acquire a brown shade, then they dry up, due to which the plant fruiting period is sharply reduced.

Under favorable conditions for the tick in greenhouses and greenhouses (elevated air temperature at + 25–32 ° C, low relative humidity — 60%), the pest develops very quickly.

The tick can produce up to 20 generations in winter greenhouses and up to 5 generations in conditions of open ground. Fertilized female mites overwinter in plant debris, under clumps of soil, in greenhouse beehives, in cracks and crevices in greenhouses, greenhouses, sheds and houses.

Where does spider mite come from?

On hot days, summer residents are faced with the problem of the appearance of a spider mite on cucumbers. It has tiny dimensions, but causes enormous damage to young plants. Small insects are able to destroy the landing in just one week. Seedlings in a greenhouse can die even faster.

It is easy to make a standoff, but you need to know effective ways to combat and how the tick penetrates plants.

In order to identify methods of dealing with a tick, you need to know how it penetrates the plant:

  • an insect crawls out of the ground after wintering, when the soil is already warm enough to attack young plants,
  • weeds surrounding the planting are often a breeding ground for spider mites,
  • seedlings for greenhouses, as well as greenhouses can be a gateway for entry.

Spider mite can not only spoil the planting of cucumbers, but infect them with gray rot. Therefore, it is necessary to prevent its occurrence.

What does it look like?

It is possible to detect spider mites both in closed and open ground. The insect is characterized by small size, as a rule, the female is no more than 0.5 mm, and the male is even smaller. Its size does not exceed 0.3 mm. There are voracious individuals who have managed to feed on young leaves and their size is 2 mm.

The body shape of the tick has an elongated shape. The color of the female is red with an orange tint. In one season, females lay 8,000 eggs each. After a few days have passed, the egg will become a mature inhabitant of the vegetable garden. If you do not speed up the process of pest control, then there is a risk of being left without a crop.

Pest danger

Spider mite is committed to sucking the juice from the cells of cucumbers. With these actions, he brings the death of young plants. After the tick attack, cucumbers cannot withstand infections.

Many gardeners are concerned that the tick can threaten human health. This is a myth, because this pest is dangerous only for the crop. The only thing that the pest will bring is damaged nerves when looking for a remedy against it.

Signs of fruit damage

It is important to recognize the defeat of cucumbers by insects in time and take effective measures. The main features by which the gardener determines the presence of spider mites include:

The web serves as a means of moving the mite over the foliage. Particular attention should be paid to the lower part of the foliage. Damaged plants stop growing, and the leaves, which have been attacked by a tick, become yellow.

Growing cucumbers in the greenhouse

Insect, destructive planting, often prevails in greenhouse conditions, where the high air temperature. Therefore, the main recommendation to prevent ticks is to raise the humidity to 70%. There are other recommendations:

  • regular replacement of topsoil, which is made after each harvest,
  • the use of phosphate-based fertilizers,
  • after harvesting in the greenhouse, trellis is processed under the influence of high temperature, for this purpose a gas burner is used.

Cucumbers in open ground

In order to avoid the penetration of mites to young plants, you need to take care of the place where cucumbers will be planted. Tips for open field include:

  • Before the new sowing, the ground should be dug up, many gardeners carry out this process at the end of autumn.
  • Removal of weeds, on which small insects often settle, including mites.
  • It is important to follow the rule for crop rotation, that is, to alternate cucumbers with other crops, such as tomatoes or cabbage.
  • There is a need for regular inspection of plants, if they show signs of damage by a spider mite, then the leaves are burned so that insects do not switch to other plantings.
  • If plants are visible significant damage by mites, then it is recommended to use effective means: pesticides and other chemicals.

Difficulty getting rid of a tick

Most gardeners complain about the difficulty of finding ticks, due to their size, as well as weak signs of the presence of pests on cucumbers. In addition to the small size of the pest, it rapidly multiplies and produces resistance to many substances used.

With a significant damage to the plant, the effectiveness of the drugs used is reduced, because the web takes on some of the liquid, which serves as protection for ticks.

It is important to remember that saving money to get rid of the spider mite does not lead to a result, so you need to handle the planting with cucumbers as much as possible.

Review of professional tools

Если огородник задумывается над тем, чем же обработать огурцы, нужно обратить внимание на следующие виды препаратов:

  • Плант-Пин. Препарат создан на основе бутоксикарбоксима. Форма выпуска препарата против тли и клещей необычна, поскольку представляет собой палочки. Их необходимо зарывать в землю рядом с рассадой. Во время полива огурцов происходит выход активного вещества.One of the main advantages of the product is its residual effect, which extends for another 1.5-2 months. Positive results after the treatment will be noticeable on the second day.
  • Ethisso based on dimethoate. Form release in the form of sticks. After watering, the substance enters the soil, and then in its upper layer. The effect lasts about 8 weeks. If you want to handle a large surface, then you should increase the number of sticks used.
  • Actellic. This type of product is produced in 5 ml ampoules. This amount is dissolved in one and a half liters of water. The drug should be sprayed over the plants. Due to the high degree of toxicity, work on the treatment of plants is carried out with gloves as well as a protective suit.
  • Aktofik. Another drug aimed at combating spider mites. It can be purchased at a specialty store. However, you need to carefully read the precautions, as well as the method of application to plants.

Prevention of tick

As soon as one tick is visible, others will appear behind it, therefore it is necessary to take measures to prevent the appearance of these insects. The first thing to do is to remove the mite-infested leaves and weeds around the plants.

The leaves, as well as weeds, must be removed from plantings, since they become the shelter of harmful insects.

It is recommended to leave weeds around the plantings, as it will serve as an obstacle to the penetration of ticks to planting with cucumbers.

A spider mite may appear unexpectedly. However, if you know the rules and techniques to combat these insects, there is a chance to save the crop of cucumbers. Gardeners use both proven popular spraying methods and use funds purchased in the store. The choice depends on the degree of reproduction of the pest and the state of cucumbers after the attack of ticks.

Who is the spider mite and where does it come from

To make out the ways of spider mite on cucumbers and how to deal with the horde of these gluttons, you need to know their habitat.

Spider mite on cucumbers

  • The small harmful bug, which is to be fought with, about 0.5 mm long, is colored brown or red and endowed with 4 pairs of joints in the adult stage and 3 pairs in the larva stage.
  • It develops in 5 stages — egg, larva, 2 stages of nymph and imago.
  • Larvae and nymphs are greenish with dark areas on the sides.
  • Females hiding in the winter to ground.
  • She adores dry hot air; under such conditions, the larvae quickly hatch within 3 days.
  • The tick does not live for long — less than a month, but it has time to breed well, which complicates the control measures.
  • It settles on the back of the leaves, pierces their flesh and sucks the juice from the plant, depriving that of chlorophyll.
  • It leaves damages on the foliage in the form of a marble pattern — whitish lifeless spots and thin, but dense, milky-colored cobwebs.

Spider mite larvae

Recipes to combat spider mite on cucumbers, as well as measures to prevent it, are largely based on how the pest has appeared.

  • A spider mite crawls on cucumbers, usually from the ground after wintering, when the soil warms up sufficiently, attacking growing greens.
  • Weeds that grow in the garden before cucumbers, become a breeding ground for ticks.
  • Seedlings from greenhouses and greenhouses are another possible gateway for infecting cucumbers with hordes of pests, there is an excellent environment for their abode.

Note! Spider mite, in addition to its own damage, can «award» vegetables with gray rot spores. Its appearance is better to warn initially than to try to get rid of it — to fight it, alas, is really time consuming and not always successful.

What tools will help rid cucumbers from spider mites

The choice of remedies for spider mites on cucumbers is better based on the degree of damage that he managed to inflict on growing vegetables.

  • Emergency actions — removing yellow dead parts of the cucumber bush and burning them, and if the bush has already died, then it must be urgently dug out and burned in the same way — this will help stop the pest invasion.
  • If the identified tick settled quite recently — there are no twisted dead leaves and little cobwebs, then the means at hand — peroxide, ammonia, tobacco dust, turpentine — will be suitable for the fight.
  • If the cucumber greens already have obvious signs of damage — the leaves wither, turn yellow, with a noticeable marble pattern of whitish and blackened spots, and already fall off, then spraying the infusions or decoctions of plants rich in deadly ticks to the tick will help fight the spider parasite.
  • Biological products — a great help to fight the voracious parasite, allowing for 3 — 4 stages of processing to get rid of the culprits of the death of cucumbers.
  • Acaricides, whose drugs are able to totally fight the pest family, will help with the neglected forms of cucumber damage.

Important! Before spraying cucumber bushes, you need to remove the mite web — it will hold liquid drops, and they will not fall on the surface of the plant!

Note! Acaricidal drugs — it is a toxic agent for people, it should be used as a last resort, when other control measures do not work.

Handy tools to get rid of spider mites on cucumbers

If the defeat of cucumber foliage is insignificant, and the owners do not know how and how to get rid of the spider mite on cucumbers, they will need means that everyone has at hand.

Cucumber leaves infected with spider mite

  • Only 2 tablespoons 3% hydrogen peroxide, divorced in a liter of water, will be a destructive control measure for the voracious tick-borne family. It is advisable to spray with such a solution 3 — 4 times, with t in the region of 20 ° C, the interval will be 5 to 7 days, with t in the region of 30ºС — 3 days.
  • Tea spoon ammoniasimilarly diluted in a liter of water, will successfully fight the cucumber parasite. The resulting liquid is sprayed cucumbers with the same frequency and spacing.
  • Jars with spilled in them turpentineplaced at the affected plants, with their further temporary covering with a film or fabric, will kill the parasite.
  • Tobacco dustif it powders cucumber greens, it will imitate mites in the early stages and will not burn the foliage.

Such simple measures without the use of chemicals will neutralize the threat of extermination by the mite of cucumber bushes, if applied in time.

Plants — help in the fight against spider mites

Infusions with decoctions of herbs that cause the absolute death of spider mites, can be used in pollination of cucumber bushes. Proved to be used to combat the small tick is a plant material.

  • Dope — decoction: 1 kg of dry plants without roots / 2 kg of dried / 3 kg of fresh boil for about 3 hours and diluted with 10 liters of water, infusion — 100 g of dry plants pour a liter of water and insist day.
  • Dandelion — infusion: 0.5 kg of fresh chopped greens pour 10 liters of water and set aside for 3 — 4 hours.
  • Calendula — Infusion: 0.4 kg flowers withstand 5 days in 4 liters of water.
  • Sorrel — 0.3 kg of chopped rhizome soak in a bucket of water for 5 hours.
  • Yarrow — 0.5 kg of dry raw materials need to brew in boiling water, and then bring the volume to 10 liters.
  • Onion and garlic — 0.2 kg of a mixture of their husks to insist in a bucket of water during the day.

The use of these toxic solutions by the drip method helps gardeners to fight the spider pest with natural means, without harming the yield of the crop.

Important! Irrigation should be done not in the active sun — morning or evening, otherwise unstable toxins in the liquid will quickly disintegrate under the sunlight.

Biological products against spider mites

An excellent substitute for poisonous chemistry is modern biologics, which act only for dotted pests devouring their greens. Microorganisms, on which the mechanism of biological poison is based, inhibit the activity of the spider mite at all mobile stages, when they suck juices from cucumber.

In addition to eggs, females that have sunk into the ground may not be affected by their effect, therefore irrigation multiplicity is usually 3, or even 4, stages.

    «Vertimek» with the active component abamectin — it is most often praised for performance.

«Kleschevit» and «Akarin»

«Actofit» and «Fitoverm»

Biologics do not instantly kill the tick, but only after 8 — 12 hours.

Biological poison is strictly prepared according to the enclosed instructions, and all prescribed safety rules at the working stage are observed.

Acaricides that kill spider pests on cucumbers

Acaricidal chemicals are “heavy artillery” for spider mites, affecting not only nymphs, larvae and adult insects, but also egg mites.

The only disadvantage is that they quickly develop immunity to poisons, since 3 generations change to a season. Therefore, you need to change the drug, focusing on the composition, and not another name.

Observations say that for one treatment only 50 — 70% of ticks will die out, for two — up to 90%, therefore they spend 3 treatments with a break of 4 — 6 days, depending on the weather — the hotter and drier the break, the shorter the break.

Such acaricides showed their “lethal” power.

  • Floromitewhere the substance is biphenazate,
  • «Flumate»where the substance is flufensin,
  • «Oberon»where the substance is spiromesifen,
  • Sunmitewhere the substance is pyridaben,
  • «Apollo»where the substance is clofentezin,
  • «Nisoran»where the substance is hexithiazox.

Important! When working with a chemical poison you need to be especially scrupulous not to get poisoned — the drugs are relatively toxic for people too!

Preventive measures against spider mites

A spider mite is an attack that is easier and quicker to prevent than to fight destruction. Preventive actions against it are simple and reliable, if carried out thoroughly.

They are based on taking into account comfortable conditions for accelerated reproduction and transformation into a new phase of the spider mite (dryness and heat), as well as conditions for successful wintering.

Consider what can be done to prevent the tick from cucumbers in greenhouses and greenhouses, as well as on open garden soil.

Prevention of spider mites in greenhouses and greenhouses

The microclimate in greenhouses and hotbeds contributes to comfort for spider mites — it is dry and warm there. Under greenhouse conditions, it is able to settle down well, feed itself, start offspring, and winter in greenhouse soil.

How to prevent spider mites by spoiling their habitats?

  • Make the humidity higher than 70%, because already at 60% the tick dies.
  • After the harvest, remove or thoroughly dig up the top layer of soil, especially in the corners — female ticks love to hide there for the winter.
  • Enrich the soil with phosphate fertilizers in the form of mixtures.

Note! It is good to do in the off-season disinfection of the frame and the trellis — some individuals, when the temperature does not fall below 0 ° C, do not leave the thickness of the ground, but climb up plants, frame elements, trellis.

Preventive measures in the garden against spider mites

At the height of summer, especially in hot dry weather, for 3 days out of 100 eggs laid by the female, a new hungry spider web appears in the larval stage, which is no less gluttonous. Therefore, the tick-borne field is multiplied at times, and it becomes more and more difficult to overcome it.

To protect their cucumbers from such a misfortune, a number of simple measures should be taken.

  • When the crop of cucumbers is harvested, the entire plant must be completely dug up and burned — some individuals may settle on the stems and tops.
  • Before planting and after removing the bushes, the soil is carefully dug up.
  • Timely removal of weeds — a pledge of the absence of spider mites on your cucumbers, because in the spring weeds — the first sustenance of the mite after hibernation.
  • Planting between the bushes of marigold flowers will prevent a tick invasion.
  • Detected affected leaves need to be cut off and burned.

Note! Planting mixed cucumbers, tomatoes and cabbage will save cucumbers from spider mite!

The damage to cucumbers from spider mites is enormous — the affected plant becomes defenseless against other diseases — fungus and rot, the harvest also suffers. Only the strength of the gardener himself to minimize such damage.

Spider mite on cucumbers: how to fight, proven methods

These are recommendations of experts from different regions of our country, and therefore some of them, due to different conditions of application, may not be suitable. So, what do the professionals advise:

Spider mite on cucumbers: how to fight

  • To get rid of the tick, you must first gently wash the plant.

For spraying, warm water or a solution of soap is best. Inexperienced gardeners use detergents. This can not be done, because the composition may be harmful components.

  • Significantly damaged leaves must be carefully removed and burned. Due to this, it will be possible to reduce the reproduction of the pest and limit its migration to other leaves or plants.
  • Strongly affected shoots are recommended to be removed.
  • During cloudy weather cucumbers should be plentifully watered and then covered with foil. Due to this, the level of humidity will significantly increase, which the spider mite is very afraid of.
  • In some cases, the use of chemicals is recommended. This may be a solution of Malathion or Intavira. It is important to comply with the dosage specified in the instructions.
  • In the soil, you can make a drug called «Temik.» This is a strong insecticide that will help destroy pests.
  • Recommended spraying phosphorus and sulfur preparations.

    Plants that will help in the fight against pest

    Plants can also be effective in the fight against spider mites. Here are some of them:

    Roots and tubers, roots and grass insist in 70% alcohol. The extract is diluted with water at a ratio of 1:10 before use, and then used against a spider mite. Plants harvested during budding.

    • Hogweed (Caucasian, Siberian, bearded, Mount Fluffy, Spotted)

    Against the spider mite use infusions of its dry leaves, stems and roots (1 kg per 10 liters of water to infuse 24 hours). Recipe: this crushed green parts are ground in the form of a slurry with water (1 kg of a plant per 2 liters of water).

    Squeeze out the liquid part, pour the extracts with 15 l of water and after infusing for 6-12 hours, separate the liquid part again and mix with the solution obtained earlier. Harvest raw materials before and after flowering, and during flowering — only the aboveground part.

    Against spider mites use his infusions or decoctions. Recipe infusion: 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. Harvest the aerial part or the whole plant during flowering.

    Broth 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 vegetable raw materials). After cooling, strain the broth and add up to 10 liters. During flowering, the whole above-ground part of the plant is harvested.

    Seeds and dry aerial parts of plants insist 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 maturation.

    Infusions of dry ground plants (90-100 g / l) after 24-hour exposure and filtration are used in the fight against spider mites. Harvesting of plants produced during the growing season.

    Against spider mites, water infusions of fresh leaves (50-100 g / l) are effective.

    In the fight against spider mites use water infusions of onion scales. Scale onions insist 12-15 hours. Concentration — 20 g / l.

    • Alder is gray, artisan alder

    Pyrethrum is meat-red (Caucasian chamomile), feverfew pink, Dalmatian chamomile. All vegetable mites are killed by 2% aqueous chamomile powder suspensions.

    An infusion of dry roots of 10% concentration is effective against spider mites. What else should be done to defeat the spider mite:

    1. Clean greenhouses and greenhouses from plant residues and destroy them.
    2. Dig the soil.
    3. Carefully destroy weeds on ridges and around greenhouses.
    4. Flush boxes and frames with a 10% solution of caustic soda or green vitriol before laying the greenhouse.
    5. Collect and burn single damaged leaves.
    6. Spray the extract with onion or garlic scales (200 g).
    7. Treat with 70% colloidal sulfur (50-100g), Celtan (20% c. O., 20 g) in open and protected soils.

    Agrotechnical methods

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

      The alternation of planting cucumbers with tomatoes, as the mites do not develop on tomatoes.

    Garden beds with cucumbers are best alternated with garden beds on which other crops will grow. In this case, if the mites start on one of the beds, the others will not suffer. At close proximity, all cucumbers can be infected in a short time,

    Cleaning the greenhouse or vegetable garden in the fall of all the garbage, rags, plant residues that must be burned.

    In addition, a greenhouse or greenhouse can be identified, for example, using sulfur checkers FAS or Climate.

  • Deep digging of the soil, preferably in the autumn,
  • Создание повышенной влажности (80% и выше), для растений она считается оптимальной, а для клещей – неблагоприятной,
  • Осмотр растений на наличие клещей.

    Источник: «ogorod.guru, vogorode.com, dachka-ogorodik.ru, bugattack.ru, dachadecor.ru, bezvrediteley.ru, vredinfo.ru»

    Чем опасен

    When a pest turns out to be in a planted area or in a greenhouse, it is immediately located on those types of plants that are most convenient for its existence. Most often, such a culture are cucumbers. Ticks take all the necessary nutrients from plant cells (they feed on sap), which is why the leaves start to wilt and dry so quickly.

    As a result, due to the disease of cucumber plants die entirely. It should be noted that the females of such a tick do not sit still. After 3-4 days they begin to actively lay eggs, the number of which can exceed 400. For a year, such egg laying processes can occur up to 20 times.

    The most suitable for their reproduction is the air temperature from 23 to 33 ° C. It is important to know that ticks multiply and develop not only in greenhouse conditions.

    There is a very high risk that they can hit plants that grow in the garden. What needs to be done in order to get rid of the cucumber pest as soon as possible? Of course, I would like to say that the means of dealing with the tick are very simple, but they do not always act as quickly and efficiently as we would like.

    Numerous studies and experiments have shown that it is absolutely useless to get rid of a pest by simply sprinkling it with plenty of water or using ultraviolet lamps. The tick larva is quite resistant and can counteract many negative factors from the side.

    Spider mite causes enormous damage to vegetables. Sucking the contents of cucumber cells, he gradually brings the death of the plant. Also, the pest is able to infect the plant with various infections, it spreads bacteria gray rot. This leads to the fact that the plant loses its immunity and may become infected with other diseases.

    Many are interested in the question: is the spider mite dangerous to humans? In this respect, you can be calm: the only harm (other than loss of the crop) that a pest can inflict is the nerves spent on the experience. Spider mite harms many plants, such as beans, melons, tomatoes, chrysanthemums, dahlias, stock roses, hydrangeas, gooseberries, roses, spruce, juniper and apple trees.

    Signs of cucumber damage

    The main signs of the destruction of cucumbers include:

    • the appearance of white dots on cucumbers,
    • leaf color white
    • covering the whole plant with a solid web, in the upper part of which parasites accumulate.

    Usually spider mite is located on the underside of the foliage, so it is worth to pay attention to it more often. A web that plants plants serves as a springboard for moving pests along foliage.

    Damaged cultures slow down their growth, and leaves that have not been damaged turn yellow.

    To make out the ways of spider mite on cucumbers and how to deal with the horde of these gluttons, you need to know their habitat.

    1. The small harmful bug, which is to be fought with, about 0.5 mm long, is colored brown or red and endowed with 4 pairs of joints in the adult stage and 3 pairs in the larva stage.
    2. It develops in 5 stages — egg, larva, 2 stages of nymph and imago.
    3. Larvae and nymphs are greenish with dark areas on the sides.
    4. Females hiding in the winter to ground.
    5. She adores dry hot air; under such conditions, the larvae quickly hatch within 3 days.
    6. The tick does not live for long — less than a month, but it has time to breed well, which complicates the control measures.
    7. It settles on the back of the leaves, pierces their flesh and sucks the juice from the plant, depriving that of chlorophyll.
    8. It leaves damages on the foliage in the form of a marble pattern — whitish lifeless spots and thin, but dense, milky-colored cobwebs.

    Recipes to combat spider mite on cucumbers, as well as measures to prevent it, are largely based on how the pest has appeared.

    • A spider mite crawls on cucumbers, usually from the ground after wintering, when the soil warms up sufficiently, attacking growing greens.
    • Weeds that grow in the garden before cucumbers, become a breeding ground for ticks.
    • Seedlings from greenhouses and greenhouses are another possible gateway for infecting cucumbers with hordes of pests, there is an excellent environment for their abode.

    Note! Spider mite, in addition to its own damage, can «award» vegetables with gray rot spores. Its appearance is better to warn initially than to try to get rid of it — to fight it, alas, is really time consuming and not always successful.

    Why is it so difficult to get rid of spider mites

    Most gardeners faced with this problem, argue that even chemicals and herbal teas do not always help in the fight against them. That is due to the high resistance of spider mites to insecticides.

    Spider mites are easy to get used to and adapt to almost all poisons. The difficulty of dealing with ticks is also due to the fact that:

    1. They are not immediately able to notice
    2. The females lay their eggs for 4 days after the appearance,
    3. Ticks are able to adapt to chemicals
    4. High reproduction rate.

    What difficulties can you encounter while getting rid of the tick

    Complicating the task is the small size and weak signs of the appearance of a pest at the initial stage of plant infection. In addition, the insect of this species is rapidly multiplying. In the course of time, the pest develops resistance to certain drugs, and some drugs show their inefficiency at the very first use.

    To get rid of the spider mite on cucumbers, you need to carry out processing several times. Often even a double spraying of the product does not give results, the reason for that is the high reproduction rate.

    It must be remembered that only the use of a large amount of money will give good results, the savings in this case will lead to the spread of the disease. Sometimes it is possible to destroy a pest only with a concentrated solution, which can adversely affect human health.
    Source: «bugattack.ru, agronomu.com, mrklop.ru»

    The danger of spider mites

    Only a gardener with excellent eyesight can carefully examine a tick: it is a very small insect, no larger than 0.5 mm in size, painted in brownish-red color. With the increase it can easily be considered in him four pairs of paws (while the insect is in the larvae stage — three). The larvae have a greenish color, on the sides turning into brown.

    With an increase, you can examine the tick in detail, the bottom of the figure shows the results of its activity.

    Ticks overwinter in the ground, creep up on the beds with the onset of heat and the appearance of enough green to feed. In the summer of insects prefer hot weather without precipitation. Females lay about a hundred eggs at a time, giving about 20 generations over the summer. The larvae hatch very quickly, in a few days. The most favorable conditions for the reproduction of the mite is a temperature of about 30 ° C and a humidity of about 60%.

    Despite the fact that the life of a tick is short, not more than a month, its fecundity is so high that it represents a great danger.

    On cucumbers, the tick prefers to settle on the underside of the leaves, where it sucks the sap from the plants, piercing the leaf flesh. Gradually moves to the stems, and then to the emerging fruits, causing great harm. Most affected are the upper areas of cucumber plants. Dense web entangles both stems and leaves, disrupting oxygen exchange and suppressing photosynthesis. Productivity is significantly reduced: at best, almost doubled.

    The web covers the whole plant, but it is not very similar to the web that the well-known domestic spider weaves

    Especially cozy cucumbers in the greenhouse, because there are ideal conditions for its life and reproduction:

    • enough heat
    • wind and rain protection
    • lack of tick-eating birds and large insects.

    The tick changes its location with the help of fragments of the web created by it. Perhaps «relocation» and with the participation of humans or animals, as well as weeds. It is impossible to fully secure the landing from the tick: it can fly anywhere with gusts of wind or “come” on any animals.

    Chemical and biological products

    Despite the high activity of chemicals, their use is not only undesirable (toxicity to humans), but is not always effective: insects quickly adapt to them. Therefore, biological agents based on the action of various microorganisms, for example, have great applicability, for example:

    Any treatment should be carried out strictly according to the instructions for the preparation. As a rule, the death of parasites begins 8–10 hours after spraying.

    Phytoverm is one of the most harmless preparations to protect many plants from pests.

    The most “heavy artillery» is acaricides, which kill not only adult individuals, but also affect larvae, and even egg-laying. But since such drugs are dangerous for humans, it is worthwhile to think carefully about the advisability of using them. This, for example:

    Such preparations must be alternated: ticks quickly get used to their action, and in one treatment no more than 70% of the pests are destroyed. Therefore, it is worth paying attention to prevention.

    How to fight?

    Cucumber protection from the pest begins immediately after harvest: all plant residues are removed and destroyed, greenhouses and greenhouses are disinfected in the fall with sulfur bombs, subject to the tightness of the structure, in the spring, before sowing seeds or planting seedlings, repeated disinfection — fumigation with sulfur is carried out ( 100 g / m3).

    Before you fight a spider mite on cucumbers, carry out tillage.

    During the cultivation period, it is necessary to maintain a microclimate regime that is optimal for cucumbers (air temperature is + 32 ° C, relative air humidity is above 80–85%), due to which development of the tick drastically slows down, both fecundity of females and the percentage of birth of larvae from eggs decrease.

    Horticulturists should always remember that in one structure of a protected ground it is strictly not recommended to grow different crops, since their requirements for growing conditions can be completely differently directed (for example, tomato needs dry air, and cucumber — high air humidity, and . P.).

    Spider Tick Remedy

    It is not so easy to choose a remedy for spider mites. It is not recommended to use “chemistry” on personal plots against a tick, but you can recommend the use of a bio method. For example, spider mite well destroys phytoseiulus predatory mite, which is introduced into the foci of pest spread.

    Good results are also obtained by spraying plants with a fitoderm — 0.2% c. E. (3 ml per 10 l of water).

    How to deal with a dangerous pest

    The main pest living on cucumbers in the greenhouse is the spider mite. This arachnid can be milky-transparent, yellow-green, red or orange, no larger than two millimeters in size.

    It is extremely difficult to fight with a spider mite, because it multiplies very quickly, it grows on plants throughout the growing season, at all stages of development, and its colonies are located only on the lower side of the leaves, and are protected by a spider canopy.

    It is necessary to alternate the planting of cucumbers with cabbage and tomatoes. Systematically remove weeds, as ticks that hibernate in the open field, first develop on them. It is preferable to grow between greenhouses lawn from cereals.

    After the last harvest, acaricides need to be carried out a continuous processing of greenhouse plants, so we will warn the resettlement of spider mites. In order to reduce the wintering stock of ticks, it is necessary to remove old and weed plants from the greenhouse at the end of summer — early autumn, and then carry out additional spraying of greenhouse structures.

    After the end of the season, remove the top layer of soil. Sometimes the tapestries and pipes are burned with a gas burner. As cucumbers are grown in a greenhouse, there should be a constant high (above 80-85%) air humidity, and attention should be paid to places near the transoms, where humidity is lower due to more active air exchange.

    It is necessary constantly, during all operations for the care of plantings, carefully inspect the plants, and if there are single lesions on the leaves, collect the affected organs of the cucumber and burn / bury.

    Apply biological products with an interval of 10 to 15 days, if you find foci of spider mite. When a pest appears in large quantities, it is necessary to systematically spray plants repeatedly over the entire growing season with biologics in 5-10 days.

    To do this, use tools such as bitoxibacillin (80-100 grams per 10 liters of water), fitoverm (ak-tofit) (10 ml per 10 liters of water), colloidal sulfur (50-100 grams per 10 liters of water). Produce and dusting with ground sulfur in the ratio of 3 grams per square meter of planting.

    When detecting the first foci of the pest, use the natural enemies of the spider mite — this is, for example, the predatory mite phytoseiulus. To do this, you need to decompose the leaves of the culture with clusters of a predator (from 10 to 60 individuals per infected plant) into the foci of tick distribution. If the spider mite has already firmly settled in the greenhouse, the ratio of «predator — prey» will be different, 1:20 — 1:50.

    If the above methods did not help, you need to resort to chemicals. For the struggle to be successful, it is necessary to alternately alternate the use of acaricides with different mechanisms of toxic action, since the spider mite can “get used” to one drug, quickly form a population resistant to acaricide.

    What it is?

    Spider mite — pest of orange, red, green-yellow or milky-transparent color. As a rule, the size of one individual does not exceed 1 mm, but larger specimens are also found — up to two mm. The insect feeds on the sap of the plant, therefore, once in the greenhouse, it immediately looks for more juicy and tasty cucumber whips. Having drunk all the liquid from the foliage, the pest kills the crop: the bushes start to dry out, then they get sick and die.

    Since nutrients concentrate on the lower part of the leaf, the tick prefers to settle there. Arachnids try to occupy as much space as possible, leaving behind small marks of a light white shade, which subsequently take the form of white stripes. Already after 3 days, the pest females lay eggs in an amount of about 400, and after a week the colony of insects will increase significantly, respectively, they will need more food and the pests will begin to attack the neighboring plants. The main sign of infection at this stage is the web, enveloping cucumber lash.

    Biological and chemical preparations

    For the fight, when the colony of insects has already increased significantly, it is better to use chemical means. It should be borne in mind that this pest is not an insect, as such, therefore, it is not advisable to use insecticides against it.

    It is possible to destroy arachnids with the help of acaricidal preparations, which are conditionally divided into the following groups:

    • Insecticides-acaricides. This is a complex of poisonous drugs acting on both arachnids and insects. Organophosphorus compounds, as well as pyrethroids, have a poisonous effect; inorganic sulfur preparations are sometimes used.
    • Specific acaricides. They are composed of bromine, sulfur or their derivatives. Only effective against ticks.
    • Acarofungicides. They have a complex effect not only on ticks, but also on spores of pathogenic fungi, which are often transmitted by pests, as a result of which weakened plants are affected. Therefore, the use of such means to destroy the tick is quite justified and quite effective.

    Please note that all free-selling acaricides have a third hazard class. This means that they are practically harmless to mammals.

    However, their use requires compliance with elementary safety rules: respiratory system must be covered with a respirator, gauze bandage or a piece of cloth. At the time of the procedure, wear clothes that cover the body as much as possible.

    These substances have a pungent odor. They have a double effect on the tick: gas and contact, that is, the death of the parasite occurs in contact with the drug, as well as in the case of penetration of a chemical agent into the respiratory tract of the pest. For the treatment of plants it is recommended to use a special sprayer with an elongated spout.

    All work on the destruction of the tick in the open ground are carried out in calm weather. This is due to two reasons: the accuracy of processing and protection against accidental exposure of the funds. Besides, when carrying out medical actions care must be taken to ensure the safety of the environment:

    • Do not work during the flowering period, as acaricides have a toxic effect on bees,
    • Do not allow the drug to enter open water, because acaricides are a danger to fish.

    To combat spider mite Biological agents are also widely used (for example, Fitoverm). Препарат также имеет третий класс опасности и при работе с ним необходимо соблюдать те же правила безопасности. Но в отличие от акирицидов, фитопрепараты можно использовать и в период вегетации.Already after two days after treatment with Fitoverm, you can start harvesting, while spraying with ordinary acaricides only a month later.

    • Aversektin is also a fairly effective drug used to combat the pest. This substance is the result of the vital activity of crop-producers, has the ability to self-destruct, does not accumulate in the organs of the plant.
    • Aktara is a powerful and effective tool. Within 30 minutes after spraying, the parasites are saturated with poison, and after a day — completely die.
    • Plant Pin. The sticks of the drug are placed in the soil near the plant. When watering hazardous substances dissolve and destroy the pest. According to the same principle acts Etsisso.

    The main problems encountered in the fight

    It is rather difficult to fight this scourge.. This is due to two main reasons:

    • Ticks produce a stable immunity to the chemical used;
    • these arachnids rather quickly multiply.

    Moreover, the pest is localized, as a rule, on the back side of the sheet, which complicates its detection. Therefore, the treatment of plants with acaricides must be carried out repeatedly.

    The fact is that sometimes the tick females have time to lay eggs, which do not fall under the effect of the killing drug, even before death. Even if you spray plants at the time when the first females begin to feed, this will not stop the development of the population.

    In addition, experienced growers say that it is during this period that it is almost impossible to destroy a pest colony. This is explained by the features tick breeding: the fecundity of females is highest just at the initial stage of plant damage. The number of eggs in one clutch can reach 300, and if you consider that the incubation period lasts only 7-36 days, then you can imagine at what rate the population grows. Therefore, even with the destruction of 90% of ticks, there is a high probability of a quick recovery of the colony at the expense of the remaining individuals.

    Another serious obstacle is the fact that with the increase in the number of colonies, a large number of spider webs are formed, by means of which the parasites move from one cucumber bush to another. In addition, the web has water-repellent qualities that prevent the achievement of the desired effect when using acaricides. Therefore, for the complete destruction of the population and the prevention of further occurrence of parasites, it is necessary at the initial stage to use a loading dose of acaricides. In this case, subsequent processing is carried out after 5 days.

    It is a large dose of the drug has a detrimental effect on all individuals, without exception.. In the process of using chemicals some specimens produce immunity, so small doses are not lethal for them.

    Spider mite on the plot

    It is necessary to start the fight against the parasite immediately after harvesting: all parts of the affected plants must be removed and destroyed. In addition, with the onset of the new season, the following activities are held at the site:

    • Before planting, it is necessary to dig up the soil, since the main part of the parasites spends the winter directly in the upper layer of the soil.
    • Planting cucumbers must be alternated with tomatoes and cabbage.
    • The mite, which has winterized in the open ground, first grows and develops on weeds, therefore it is necessary to systematically weed beds with cucumbers.
    • In the process of growing should regularly inspect cucumber lash and in case of detection of infected leaves, remove them, bury or burn.
    • When a pest is detected, its localization sites are treated with special preparations.

    Spider mite on cucumbers in the greenhouse

    Greenhouse plants most at risk of injury. After all, it was in the greenhouse that all the conditions were created for the reproduction of parasites — the relatively low air humidity and elevated temperature (+30 degrees or more). To prevent the occurrence of a tick, it is necessary to increase the level of humidity to 80-85%.

    In addition to the main methods, the following are used:

    • After harvesting, remove the top layer of soil and carry out fumigation (disinfection) of the greenhouse construction. With the onset of spring, the procedure is repeated before planting.
    • Palette burned with a gas burner.
    • Fertilizers containing phosphorus are applied.

    Fighting folk remedies

    Before using chemistry to destroy the mite on cucumbers, you can try to get rid of the parasite by folk methods. The most popular methods include the following:

    • Sprinkle with soapy water,
    • colonization of the territory by Ajarian entomoftor,
    • planting flowering plants.

    Planted dill next to cucumbers will help get rid of parasites. Its flowering has an attractive effect on ladybirds, which prevent the development of spider mites and aphids.

    ph.lacroixx.com

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