How to deal with spider mites on tomatoes. How to effectively deal with spider mites on tomato seedlings

• small yellow dots on the upper part of the leaves, on the lower - black or dark brown traces of the vital activity of arachnids;
• the appearance of discolored areas on the leaves, which later merge into larger areas;
• yellowing and drying of leaves and shoots;
• the formation of cobwebs on the tips of leaves and shoots.

Hanging and stretching between plants, the web on tomatoes in a greenhouse allows mites to migrate to neighboring bushes. Her scraps, along with pests, are carried by air currents throughout the room.

Spider mite on tomatoes in a greenhouse: how to fight

1. Steaming and digging the soil.
2. Fumigation of the greenhouse with insecticides to kill wintering females and eggs in autumn and spring.
3. The combination of acaricidal preparations in order to avoid the addiction of the tick to the active substance.
4. Application of phosphate fertilizers.
5. Timely removal and destruction of weeds.
6. Treatment of seedlings with phosphamide before planting it in the ground.

You can also fight spider mite on tomatoes in a greenhouse, both with the help of its natural enemies - lacewing, phytoseylus, gall midge, encarsia - and using biological preparations containing bitoxibacillin are effective. It should be borne in mind that the latter cause accumulation harmful substances in fruits.

Spider mite on tomatoes: how to deal with folk remedies

Traditionally, spraying plants with tinctures of various plants is used for this:

• potato tops;
• garlic;
• henbane;
• dandelion leaves;
• horseradish;
• tobacco.

Possible use ethyl alcohol for at least double processing affected plants.

Research shows that it is easier to prevent the appearance of a pest than to deal with an already overgrown population of spider mites on tomatoes in a greenhouse. One of the most important preventive measures is spring and autumn processing premises with bulk sulfur bombs "Pawn-S", which have proven their effectiveness both during research and in practice.

Due to the reduced content of the active substance, the product is not as toxic as pressed sulfur blocks. The acaricide is sublimated together with sulfur in the form of an aerosol and kills the spider mite, which is at all stages of development: from egg to adult.

The aerosol spreads easily in an enclosed space, allowing large areas to be treated without special equipment.

Since the drug also affects pests that are in upper layers soil, there is no need for its digging, as well as treatment with insecticides tomato seedlings. Also bulk checkers "Pawn-S" destroy many pathogens of fungal and bacterial diseases plants.

When choosing measures to combat spider mites on tomatoes in a greenhouse, it is important to know that in protected ground the pest has a high fecundity due to the speed individual development and generational change.

Checker Pawn-S - the best checker from diseases

Pawn-S checker is used against pathogens of bacterial diseases and rot, as well as ticks in greenhouses and greenhouses, granaries, elevators and mills, vegetable stores, fruit storages, and warehouses.

Weight of a checker net 500 g, D. V. - 450 g/kg of sulfur
Packing - boxes (14 pieces)
Registered with the Ministry of Agriculture of the Russian Federation -
Registration No 1635-09-101-364-1-0-0-0 dated 20.08.09

Harmful objects 1 checker per room volume (m 3)
greenhouses, warehouses, granaries, vegetable stores and bacterial diseases 150 - 250
Pincers 50 - 80

ATTENTION! Sending goods (checkers) is carried out on the basis of full prepayment, only for legal entities and individual entrepreneurs!

The minimum lot is 1 box (14 pieces).

Order checker Pawn-S

Spider mites often appear on tomato plantings in a greenhouse, where there is a microclimate suitable for it and good conditions for wintering. Tomatoes in a shelter are more vulnerable to mite attacks - plants can be weakened due to lack of lighting, saving space forces gardeners to thicken rows, contributing to the rapid spread of the insect through the planting. The inability to use crop rotation in greenhouses increases the risk of "chronic" pest damage.

Signs and causes of spider mite damage to tomatoes

The insect feeds on the juices of plants, getting it from the leaves. Significant pest damage quickly depletes tomatoes, worsening their yield. Ticks are located on reverse side leaves, preferring lower part bushes.

The size of the insect is too small (no more than 1 mm in length) to be noticed before the pest activity affects the health of the tomatoes.

Signs of a tomato tick attack:

• discolored areas, dots white color on leaves, arising in places of bites;
• twisting the lower leaves with their edges up, followed by drying and falling off;
• small gray lumps, like grains of dust, on the back of the leaves;
• cobweb enveloping leaves, stem and fruits.

Important!

The web becomes noticeable already at the stage of a large damage to the landing by a spider mite, requiring the use chemicals.

Most often, the pest enters the greenhouse along with seedlings or earthen mixture when updating the soil layer in the shelter. Infection of seedlings can also occur through the soil or from seedlings of other crops that are vulnerable to mite damage (eggplant, bell pepper). A particularly high risk of getting mite-affected plants is when buying ready-made seedlings.

Finally, a spider mite can get into the greenhouse when planting decorative or field plants between rows to attract honey insects for pollination of tomatoes. Not only cultivated plants, but some weeds can be food and breeding grounds for the pest.

For the winter, the insect hides in the ground or under a layer fallen leaves, unharvested haulm, etc. As a rule, having appeared on tomatoes once, the tick will return in the following seasons. Therefore, the removal of the pest will require several treatments for plants, as well as soil and greenhouses.

Treatment measures

When choosing a method of dealing with spider mites, it is necessary to take into account the degree of planting damage, the development phase of tomatoes, and the sources of pest spread.

Chemical acaricides and insectoacaricides

If the population of spider mites on tomatoes is significant, it is recommended to treat the planting with chemicals. It is permissible to use poisons no later than 2-3 weeks before the start of the harvest. If a tick attack is detected during the fruiting period, it is worth limiting yourself to less toxic processing methods - folk or biological means.

Effective chemicals against spider mites during the growing season will be Antikleshch, Oberon, Flumite, Neoron, Fufanon, Iskra-BIO, Borneo, Aktellik. Spraying is carried out 2 times during the growing season with an interval of 3 weeks. The most powerful tool, but different and high level toxicity, is Carbophosphor. The drug should be used only in extreme cases.

Not only plants, but also the soil and the walls of the shelter should be treated. For soil disinfection from chemicals, iodine-based preparations are best suited - Farmiod, Povidone-iodine. Chemical treatment greenhouses are made along with spraying the planting, but the main work on cleaning the shelter is carried out after harvesting.

Predatory mites and biological products

Means of this type are preferable to chemicals for treating plantings in a greenhouse - due to the inability to fully apply crop rotation, pesticides quickly accumulate in the soil under cover. Biological products are safe for the crop, they can be used during the flowering and fruiting of tomatoes.

To combat spider mites, predatory mites that feed on eggs and adults are released for planting, or plants are treated with preparations containing bacteria, damaging the pest. From bacterial preparations good recommendations gardeners received the proven Fitoverm, as well as Kraft, Agrovertin, Bitoxibacillin, Kleshchevit.

Folk recipes

With a small pest damage, planting treatments with folk remedies in combination with agricultural practices can reduce the population and gradually remove the spider mite. The effectiveness of home remedies is lower than that of specialized drugs, it is first of all advisable to use them to prevent reappearance tick.

The most effective against tick recipes:

• Alcohol. Bushes are sprayed with 96-98% alcohol diluted with water at the rate of 2 tablespoons per liter. Processing is carried out twice or thrice with a break of 7 days.

On a note!

Alcohol is also effective for disinfecting greenhouses. In this case, a concentrated substance is used, without diluting with water.

• Soap solution. The most powerful remedy is tar soap, you can also use ordinary household soap. Half of the bar should be grated and dissolved in a small volume hot water. After no solid parts remain in the solution, you need to dilute it with 0.5 liters of water.
• Aloe. Juice is squeezed out of 2 kg of aloe leaves, diluted with 10 liters of water and soap chips from 1/4 bar are added to the solution. Spraying is carried out once a week throughout the season.
• Onion. Fill up with 4 liters warm water 200 g of onion peel, leave for 5 hours. Onions can be replaced with 400 g of crushed garlic cloves.
• Garlic and dill. It will take 1 kg of dill leaves and 200 g of garlic fruits. Raw materials must first be crushed. Dill is poured with boiling water and allowed to brew for 3 hours. After filtering, add garlic and leave to infuse for a day. After the second filtering, the infusion is ready for spraying the bushes.
• Potato tops. A bucket of warm water should be poured with 1.2 kg of raw materials and insisted for 4 hours.
• Marigold. Having collected and dried marigold flowers, fill a bucket with them halfway and pour 5 liters of warm water. You need to insist 2 days in a dark room.

Healthy plants growing next to those affected by spider mites must be sprayed with infusions to repel the pest:

1. Horseradish. Fill the bucket 1/3 with chopped leaves and shoots of fresh horseradish, pour water to the edge of the container. You need to insist for 1.5 hours, after filtering - spray the planting of tomatoes. The treatment is repeated after 12 days.
2. Yarrow. Dried and crushed green parts of the plant (700 g) are poured with a bucket of boiling water. Should insist 3 days.
3. Henbane. Insist 1 kg of dry raw materials in a bucket of water for about half a day. After filtering, spray the planting. The second treatment is repeated after a week.
4. Sagebrush. 10 liters of water pour 800 g of dry wormwood and insist 2 days. After that, the infusion should be boiled for half an hour and diluted with another 10 liters of cold water.
5. Leaves and roots of dandelion. 400 grams of crushed leaves and rhizomes are poured into 10 liters of water and allowed to infuse for 2 hours. After straining the infusion, spraying is carried out. After 2 weeks, the procedure is repeated.
6. Tobacco. 400 grams of chopped tobacco leaves need to be poured warm water, insist during the day.

Agricultural technology

When spider mites are found on tomatoes, additional measures plant care:

• With a small lesion, it is advisable to dig out diseased bushes from the garden, preventing the further spread of the insect.
• The planting should be regularly inspected and the leaves affected by the pest removed. Like dug up bushes, the removed parts of the plant must be burned.
• It is recommended to spray plantings of tomatoes clean water- the tick does not like excess moisture.

Attention!

This measure should not be used during the flowering period of tomatoes in order to avoid sticking of pollen, which makes pollination difficult and, as a result, reduces the number of ovaries.

• In autumn, after harvesting the tops, it is required to disinfect the greenhouse. Recommended treatment with alcohol (96%), bleach (10%), blue vitriol(five%). Any chemical preparation is also suitable, Sunmite is especially recommended for this purpose. If possible, it is worthwhile to carry out the processing of the shelter in disassembled form, this will allow you to remove ticks from hard-to-reach places.
• Digging the soil and fumigating the greenhouse with sulfur will help to complete the fight against the pest. The procedure is carried out in autumn or spring at a temperature of 10-15 ° C. For 1 m3 of space, 200 g of sulfur will need to be burned. Fumigation is carried out at closed doors, leave shelter for 5 days, after which they ventilate well (at least 2 days).

Prevention

Removing a spider mite from a greenhouse is a costly and time-consuming task, so it is worth considering the "tastes" of the pest and initially creating unfavorable conditions for it.

A few rules will help minimize the risk of an insect:

1. It is necessary to carry out heat treatment soil for seedlings - this ensures that insects that are hiding in the soil die. Suitable for heating in the oven.
2. You can not make the rows of tomatoes too thick - this contributes to the spread of the tick throughout the planting. It is recommended to maintain a distance of 30 cm between the holes for planting seedlings in the greenhouse.
3. It is recommended to plant crops near tomatoes that repel the pest. These include basil, dill, garlic, mustard, celery, chrysanthemum, and calendula.
4. Plants require complete nutrition with phosphorus, introduced by the root method. The tick does not like soils saturated with the element.
5. It is necessary to observe moderation in nitrogen supplements. Excess nitrogen in the soil favors the appearance of mites.
6. It is important to keep the beds clean and free of weeds. In autumn, tomato tops should be removed from the site and deep digging of the soil should be carried out.

In the fight or prevention against spider mites, it is important to remember that at risk are plants that are deficient in any resource (water, light, nutrition), weakened by diseases or mechanical damage. Not only special measures, good care generally increases the resistance of tomatoes to pest damage.

Spider mite on tomato seedlings can quickly lead plants to death.

Spider mite on tomato seedlings

signs

The tick on tomatoes is noticeable, it is easy to detect. The main sign of pest infestation is a noticeable drying of the leaves, up to the death. The following signs can be distinguished that a tick lives on tomato seedlings:

• The presence of white small dots on the back of the leaves, on the stem;
• The leaves of the plant dry, despite the regularity of watering;
• There may be a soft white cobweb on seedlings;
• The absence of flowers;
• Measures to combat drought are not producing results.

Signs of a tick on tomatoes

Causes

The appearance of mites, as a rule, contributes to the infection of the soil. The main condition for their development is low humidity.

A seedling affected by a pest looks as if it has deteriorated from drought or exposure to sunlight. Cause appearance plants really lies in aridity. The fact is that the spider mite is especially common in those regions where there is low humidity. These pests are afraid of water and feel great in a dry and warm place, whether it is open ground or a greenhouse.

What to do if a web appears on tomatoes

How to deal with spider mites

You can fight a tick on tomatoes not only with proven folk methods, but also with the help of proven chemicals. Acaricides against pests vary in composition and cost. In general, some popular ones can be distinguished:

Despite the potential threat to seedlings from spider mites, getting rid of this pest is not difficult. However, it is necessary to follow the instructions, follow all recommendations for the maintenance of seedlings, as well as preventive measures.

Spider mite on tomatoes is one of the most big problems that vegetable growers may encounter. This arthropod was first described in the middle of the 19th century (C.L. Koch, 1836), at the same time it received its current Latin name Tetranychus urticae. Since then, scientists have proposed more than 60 variants of its classification: Tetranychus aduncus, Acarus cucumeris, Acarus hematodes, etc. But, unfortunately, this did not contribute to the search at all. effective methods tick control. However, it does not at all follow from this that the appearance of Tetranychus urticae is an unconditional verdict on your plantings. If taken in time necessary measures, it is still possible to get rid of the spider mite on tomatoes.

General information

For selection suitable way The destruction of the pest is first of all to understand the features of its life. This way you can quickly decide the best option: profitable from a financial point of view, effective and safe for health.

Appearance

The spider mite (we note for clarity, it is not a spider, but only belongs to the class of arachnids) is a small pest, up to 1 mm in length, and the females are somewhat larger than the males. The color of the body can be different: green, gray or brown, 2 large dark spots on the sides, which are important element digestive system. Adults have 4 pairs of legs, while larvae have only 3.

Features of life

The tick feeds on the cell sap of plants, and it can be especially often found on tomatoes in a greenhouse. But, if there are no tomatoes nearby, he will not disdain eggplants or bell pepper. On the open ground, almost all vegetables fall into the risk zone. Ticks bite through the leaf blades, as a result of which they turn yellow, become covered with tiny transparent dots and gradually dry out. As a result, the efficiency of photosynthesis processes is significantly reduced, the plant stops developing and dies.

Web

Most species of this mite actually secrete a secret that, when solidified, forms a cobweb. But it is not always visible. If the degree of damage to the site or greenhouse is relatively small, it may not be noticed. And the likelihood that you will be able to save the tomatoes is quite high. But if the population becomes too large, the web can entangle all the plants, and the effectiveness of the means of control will be significantly reduced.

Attention! Universal insecticides of previous generations have a whole "bouquet" side effects, because their use is unjustified if you are interested in an environmentally friendly crop!

How to get rid of a tick

In this you can be helped not only by various folk remedies, but also special agricultural practices or traditional chemicals(their use is justified only if more than safe methods turned out to be invalid).

Important! Agrotechnical methods in the fight against this pest are reduced to weeding the weeds from the beds and removing damaged leaves / shoots. And they need to be removed from the site.

Tick ​​- juicer, foliage signals a problem

Folk methods

• Prepare a solution laundry soap(approximate concentration - 1: 4-1: 6), which should wipe the problem areas of the plant. If the affected area is too large, the tomatoes can be sprayed. If the procedure is not effective enough, it can be repeated several times, but if even after that the problem still remains, you will have to choose some other method of struggle.
• The use of a 2% bleach solution gives good results, but a single procedure is unlikely to give any noticeable effect.
• The spider mite on tomatoes “does not like” sulfur very much, therefore it makes sense to burn sulfur briquettes in the greenhouse several times. But be careful: in the conditions open ground this method practically does not work.
• To destroy the pest in a relatively small area, you can use the usual medical alcohol, which should be sprayed plantings 2-3 times (every 7-10 days).
• One more folk way getting rid of a tick - an infusion of henbane. To prepare it, pour 1 kg of dried and crushed vegetable raw materials into a bucket of water and let the product brew for 12-14 hours. And before use, add a little to the infusion soap solution. Tomatoes should be sprayed twice, and the interval between procedures should not exceed 1 week.

Specialized chemicals

• "Plant-Pin". The drug is available in the form of sticks (the active substance is butoxyraboxime), which must be immersed in the soil near the affected plant. The tool is very effective, but its use makes sense only in the early stages of the disease. A noticeable improvement can be observed after a few days, and Plant-Pin is valid for a long time - up to one and a half months.

• "Etisso". The drug is in many ways similar to the first, only the active substance here is different - dimethoate. The scheme of application is the same.
• "". A very powerful tool, but its use requires increased accuracy and compliance with safety rules. Take 1 ampoule of the drug and dissolve its contents in one and a half liters of water, then shake the solution, pour it into a spray bottle and spray on the affected plants. The use of gloves and a gauze bandage in this case is strictly mandatory.
• "". enjoying good reviews drug that is safe and effective. Its main disadvantage is that the spider mite on tomatoes can adapt to it, especially if you use the product for a long time. But, if you notice the problem in time and immediately take up its solution, the likelihood of a successful outcome will increase significantly.
• "". The manufacturer does not explicitly indicate that this tool can be used to get rid of spider mites, but many experienced farmers use it. Although the effect does not come immediately, but the struggle with such a working solution eventually brings success. This drug is generally credited with versatility.
• "", "Antiklesch". These drugs are produced by different companies, but they are based on the same active ingredient - melathion. After spraying the greenhouse, the effect lasts at least a week, and if it is used on open ground- then 8-10 days.
• Apollo. A drug based on clofentezin, which actively affects not only adults, but also larvae (eggs). It differs from analogues by a prolonged action (at least a month) and good compatibility with non-alkaline growth stimulants. The method of application is standard - spraying the affected plants. 2 ml mixed with 5 liters of water is enough to treat 10 square meters. meters.

Of course, we have not considered all the ways to get rid of the arachnid pest. However, in any case, you already know how to deal with a tick on tomatoes competently. Share your own recipes for the destruction of this arthropod - your experience is extremely important to us.

Causes of pests

Spider mite on tomatoes can appear as a result of several factors:

Most favorable conditions for the development of unwanted populations is greenhouse. In this case, insects grow from 10 to 28 days. Therefore, when planting sprouts in a greenhouse, you should carefully examine the plants for pests, as well as disinfect the greenhouse after each season. Apply various means for the prevention of soil diseases.

Fighting methods

To achieve an effective result, it is necessary to carry out a whole range of activities, including: folk recipes and special chemicals. As agrotechnical methods are used:

• timely weeding of beds from weeds;
• removal of damaged shoots and leaves from plants and the site (burned if necessary);
• compliance with crop rotation.

When arachnids are found, one should short time treat affected plants to preserve the culture. Complied preventive actions. A careful and regular inspection of plantings on the site will allow timely detection of pests and take measures to preserve the crop.