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What flowers to plant in a greenhouse against whiteflies. How to get rid of whiteflies on tomatoes in a greenhouse: methods and methods of control, means for treating tomato bushes against the pest. Overview of whitefly control methods

Whiteflies appear on cucumbers, tomatoes, peppers, and eggplants. It is easy to detect, but it is much more difficult to fight it. You can poison the pest with chemicals, recipes homemade or use traps. Each method has its own characteristics.

The whitefly looks like an insect white sizes 1.5-5 mm. Upon contact with an infected vegetable, the pest scatters. But whitefly larvae are much more dangerous. They are more difficult to detect. They are oval, greenish in color and 0.2-3 mm in size.

Signs of whitefly:

1. A white coating appears on the leaves;
2. The leaves begin to turn yellow and fall off;
3. The pest can be found on back side leaf;
4. If you touch the affected plant, the whitefly will fly away.

The pest is capable of multiplying quickly. It can destroy the entire crop if action is not taken in time. Each individual lives for about a month. During this time, the whitefly is capable of laying 130 eggs.

The larvae pose a particular threat, as they are quite resistant to any chemicals. At this time, it is impossible to destroy them. The peculiarity of finding whiteflies in a greenhouse is the ability to constantly reproduce. IN open ground The egg-laying period occurs only in the spring, but greenhouse conditions are ideal for year-round breeding.

The whitefly's favorite treat is tomatoes. The pest also loves cucumbers, zucchini, and peppers. In this case, the insect affects not only the leaves, but also the fruits, which acquire a white tint inside.

The number of varieties of the pest is also striking. There are more than 1550 types of them. The pest occurs both in open ground and in greenhouses, where ideal conditions are created for it.

Methods for controlling whiteflies on cucumbers and other vegetables in a greenhouse

Prevention options:

1. Disinfection of structures in the fall;
2. Freezing the greenhouse in the cold season (several days at a temperature not exceeding 12 degrees);
3. Autumn weed removal;
4. Using quality soil and seedlings.

But when the pest has nevertheless entered the greenhouse, it is necessary to begin an active fight against it. There are several methods available to everyone. The choice depends on the preferences of the gardener.

Methods to combat whitefly:

1. Mechanical. These include the use of traps and sticky tapes. They act directly on the pest and its larvae.
2. Biochemical. Use of different chemicals. There are drugs such as Fitoverm, Akarin, Vertimek, which can destroy 90% of individuals.
3. Biological. They involve destroying whiteflies with the help of other insects and natural enemies. The insect is eaten by the encarsia and the macrolophus bug.

Each method has its own characteristics. So, natural enemies of whiteflies should be released into the greenhouse 2 weeks before planting the seedlings. For 1 sq. m, 3 encarsias are enough.

Encarsia is not used for cucumbers. Vegetable hairs will interfere with its work. But this option is ideal for tomatoes.

Bugs are used for tomatoes or peppers. 5 insects are enough for 1 sq. m. It is enough to release them 2 times every 2 weeks.

How to get rid of whiteflies in the fall

At the first sign of a pest, active control should begin. If you do not take action, you can lose the entire harvest. The use of chemicals may not be effective, since the larvae are quite resistant to them. But there are a number of other methods that are used in the autumn.

If in the spring the whitefly is again in charge of the greenhouse, it means that there are infected plants, weeds or soil nearby. All control measures will have to be repeated.

It is in the fall that it is best to begin the fight against whiteflies. After getting rid of insects, cold weather sets in. This will freeze the greenhouse and completely destroy all individuals.

The sequence of autumn treatment of the greenhouse:

1. All crop residues and weeds must be collected and burned.
2. The structure should be disassembled, the frame should be washed with water and soda.
3. The top layer of soil must be removed. You can replace it with disinfected soil. You can also pour boiling water over the soil, dig it up the next day and leave it to freeze for the winter.
4. You will also need to cultivate the land around the greenhouse. Weeds should be pulled out. You can dig up the soil and pour boiling water on it at a distance of 50 cm from the structure. You can also use chemicals.

After all the activities, entomophages are introduced into the greenhouse. The natural enemy of whiteflies does an excellent job. It is worth noting that such autumn treatment is also effective against other pests.

An effective remedy for whiteflies in a greenhouse

There are a huge number of different chemicals on the market. They have some differences and their own recommendations for use. You can consult with a specialist or make a choice yourself by following the instructions.

The best chemicals to combat whiteflies:

1. "Alatar" is a universal remedy. Suitable for greenhouse treatment at medium to high temperatures.
2. “Fufanon” is a colorless solution with an oily structure. You need to do the treatment once a week.
3. "Aktellik" is characterized by fast action. One treatment is enough to get rid of all insects.
4. “Spark” – gives a long-lasting effect after one use.
5. "Akarin" - leaves, larvae and adults should be sprayed.
6. Benzyl benzoate is an effective remedy that kills all whiteflies.
7. “Confidor” – 30 minutes is enough to get rid of the pest.
8. "Aktara" - it is necessary to completely spray the plants. The validity period lasts 3-5 weeks.

When working with chemicals, you must adhere to safety precautions. To do this, you should read the instructions. It is important to observe personal hygiene rules, not to eat food or smoke during processing. Animals and children should not be present nearby.

It is important to store chemicals correctly. Separate from nutritional foods, medications, in a cool and dry place. Keep out of the reach of children and animals.

You can also prepare the solutions yourself. They don't act as quickly or efficiently. But folk recipes more secure.

How to get rid of whiteflies in a greenhouse using folk remedies

An alternative to chemicals are folk recipes. Infusions are often used for preventive purposes, but you can try them as an effective remedy for whiteflies. This method has an undeniable advantage - environmental friendliness. The number of treatments may need to be increased.

Homemade recipes for controlling whiteflies:

1. Using dandelions (leaves and root). You need to take 60-70 g, grind it and pour 1 liter of boiling water. Spraying should be done every 1.5 weeks.
2. Application of garlic. 100 g should be crushed and poured with boiling water - 0.5 l. After 4 days, you can start spraying the crops. It is necessary to use 5 g of infusion per 1 liter of water.

Both sides of the leaf should be sprayed. For small quantities of the pest, you can use sticky tapes and traps that you can make yourself. You can also use ash tobacco dust or special mosquito coils.

For better fixation of the product on the leaves, you should add a little liquid soap, shampoo or adhesive.

To get rid of whiteflies, you need to take control methods quite seriously. All means are good here. Can be combined different ways to achieve better effect.

How to make a trap to combat whiteflies in a greenhouse

You can use special traps to combat whiteflies. They are environmentally friendly. You can make them yourself or purchase them in specialized stores.

Stages of creating a pest trap:

1. Manufacturing material – plastic. It should be painted orange or yellow.
2. The plastic is coated with entomological glue. You can prepare the sticky mixture yourself. To do this you will need Vaseline and detergent. The components must be mixed in equal proportions. This glue is easily washed off.
3. Next you need to make the backlight. The trap is suspended at the level of the tops of the plants. The backlight is attached directly to the plastic.

With the help of this simple device you can catch 80% of insects. For greater efficiency, it is recommended to install a second trap at night. To do this, you will need a box in which a light bulb painted orange is mounted. yellow. A container of water is placed at the bottom of the box.

The principle of operation of the trap is to attract whiteflies with light. After which the insect hits the light bulb and falls into the water.

The material for traps can also be plexiglass or plywood. The device needs to be cleaned periodically. Installation occurs with the sticky side facing the crops. It is important to keep the traps out of direct sunlight.

Remedies for how to get rid of whiteflies in a greenhouse (video)

The greenhouse whitefly is a rather insidious pest that can destroy an entire crop. Insect control must be comprehensive. Whiteflies can be removed using chemicals, folk remedies, or using natural enemies of the pest. It is also important to properly treat the greenhouse in the fall: disinfect the structure and replace the soil.

IN lately Summer residents are increasingly asking the question: how to preserve a rich harvest without pests? To grow healthy vegetables, you need not only to care for them daily, but also to fight garden pests.

One of these harmful insects is whitefly. This article will tell you how to get rid of it, which provides methods for combating whiteflies, as well as preventive measures that can help you keep your crop safe and sound.

is a tiny light yellow insect with large white wings, similar to a moth, ranging in size from 1 to 3 mm. These garden pests are native to the tropics, and to combat them, you first need to know how much damage whiteflies can cause.

So, whitefly can cause the following damage to plants:

1. The insect lays eggs on the underside of a plant leaf. The larvae, hatched from the eggs, stick to the leaf and begin to drink the juice of the plant, causing it to wither and die over time.
2. Reproduction. Since the pest multiplies quickly, there may be several generations of this insect on one leaf. Large quantities they secrete a sticky substance that provides a feeding environment for fungi.
3. Carries viral infections.

Sources of whitefly infection:

• plant residues;
• contaminated soil;
• seedlings purchased from a greenhouse.

Signs of damage to tomatoes

Signs of whitefly damage to tomatoes:

• Wilting of the plant on which the whitefly has settled;
• Rolling the leaves of the seedlings;
• The appearance of white dots;
• Formation yellow spots on a sheet plate;
• Drying;
• The appearance of necrosis on the fruits;
• Stopping shoot growth.

How to get rid of whiteflies in a greenhouse?

This annoying moth has adapted to survive in warm climates with high humidity (for example, greenhouses, greenhouses, conservatories).

To get rid of the pest, you need to follow certain steps:

1. it is necessary to plant the plants so that they are not too close to each other;
2. install ventilation in the greenhouse so that the plants receive optimal temperature conditions and can be ventilated.
3. use drugs that improve plant health;
4. do not get rid of ladybugs and lacewings - they are enemies of the whitefly.

There are biological methods for controlling whiteflies in the greenhouse. They involve the use of natural enemies of this pest.

• macrolophus bug;
• encrasia;
• riders;
• ladybugs;
• lacewings.

Processing of seedlings

Treatment of tomato seedlings should be carried out in two cases:

1. in connection with the prevention of small insects;
2. in connection with the treatment of an already progressing disease.

When growing tomatoes in a greenhouse, the main thing is not to overdo it with watering and high humidity. It is necessary to frequently loosen the soil and fertilize, while experienced gardeners It is advised not to use manure as fertilizer. It is best to put a little chicken manure in each hole before planting so that the tomato root system remains resistant to various types of disease.

A greenhouse for growing tomatoes is needed if the gardener wants to get ripe fruits as quickly as possible. And in order for the soil to promote plant growth, it must not only be weeded, but also dried, weeded, and fertilized.

Means of struggle

Means to combat whitefly:

1. To catch white moths, it is recommended to use glue-based traps, which you can make yourself from pieces of plywood, after lubricating them with Vaseline or rosin with honey. Be sure to paint your traps yellow, as whiteflies are attracted to it. To set the trap correctly, you need to place the twine with the trap near the top of the plant. Then shake all the plants several times so that the insects fly to the trap and stick there. Then you should get rid of the used bait and make a new one. We discussed earlier.
2. Washing leaves by hand. To begin with, it is recommended to collect whiteflies from the leaves yourself. Then spray the seedlings with soapy water and rinse with water. This will rid the leaves of sticky coating and wash away the fungus.
3. Use of smoke bombs. Experienced specialists It is advised to first collect the tops and then disinfect the soil. It is best to set it on fire at night, and then get rid of the top soil, in which the whitefly larvae will be located.
4. Fighting with garden plants. To prepare a garlic infusion, you need 100-150 grams of garlic per 1 liter of water. Keep this tincture for 5 days in a tightly closed container. After this, the plants should be sprayed.
5. Use of pesticides. This is a last resort method of pest control, and is recommended only in cases where nothing else helps. You should read the instructions for use in advance to take into account which of them are used once and which require a course of procedures.

Fumigation

Any summer resident asks the question: how to treat a greenhouse against pests? One of the means to combat whiteflies is to fumigate the greenhouse. For prevention, fumigation should be carried out a couple of times per season.

There are three types of drugs:

1. Smoke bomb. Experts advise doing the treatment in the spring. Greenhouses are also treated against whiteflies early autumn, in this case, all seedlings should be taken out into the air. During fumigation, plants should be gradually introduced into the greenhouse, treated with a suitable insecticide. Those gardeners who do not want to expose their plants to the air use a smoke bomb with a special preparation. As a result, not only the whiteflies will die, but also their pupae and larvae.
2. Sulfur candle. A sulfur candle spreads sulfur, which negatively affects all living things. Therefore, you should first read the instructions for use before using this pest control method. After using the candle for two days, you should thoroughly ventilate the greenhouse.
3. Tobacco checker. A tobacco bomb, like a smoke bomb, can be used inside a greenhouse without harming plants. Its smoke does not affect the seedlings. However, after using the checker, it is advisable to dig up all the soil to get rid of extinct whitefly larvae.

Chemical treatment

The next method of controlling whitefly is use of chemicals. They are used in cases where other means have not been effective.

Today, gardening stores offer a huge selection of products to combat garden pests. Famous brands There are many and each one has instructions for use.

Effective drugs:

1. "Verticillin J". Affected plants should be treated with two sprays at intervals of one week to 10 days.
2. "Confidor". Produced by single spraying of seedlings. The drug is diluted in 1 liter of water.
3. "Aktellik". The product is sold in ampoules. Diluted in 1 liter of water. Applies only when insects appear.
4. "Pegasus". It is used according to the same principle as Verticillin G.
5. "Rovikurt". Dilute 10 grams of the chemical per 10 liters of water. Used in case of mass accumulation of whiteflies.
6. "Fufanon". After applying this insecticide, after 2 hours the insects cease to exist. Valid for one month.

Systemic insecticides

Among the wide variety of drugs, the following can be distinguished:

1. "Biotlin" used to combat greenhouse whiteflies and aphids. Dilute 5 ml per 10 liters of water. Plants need to be sprayed during the growing season. Suitable for both tomatoes and cucumbers.
2. "Warrant" also used during the growing season. Dilute 0.5 ml per 1.5 liters of water.
3. "Aktara" Suitable for tomato in protected soil. It is introduced under the root of seedlings during drip irrigation. Read the full story here.
4. "Imidor" sprayed during the growing season at a 0.05% concentration.
5. "Iskra M" used against whiteflies, mites, thrips and nightshade leaf miner. 10 ml of the drug is diluted in 10 liters of water. Spray during the growing season.

Contact insecticides

You can combine other means of controlling garden pests, for example:

• "Clipper";
• "Kalash";
• "Commander" (maxi);
• "Snake"
• "Confidelin";
• "Novaction".

Rules for chemical processing

The rules for chemical treatment are as follows:

Folk remedies

You can get rid of whiteflies on tomatoes not only by chemical and biological means. For example, avid gardeners prefer traditional methods of fighting annoying insects.

Folk remedies against whitefly:

1. Garlic tincture aged for 7 days and is effective means fight against harmful moths.
2. Herbal infusion or dandelion. Uses 40-50 grams of dandelion roots and leaves, crushed and filled with one liter of water. After 2 days, you need to strain the infusion and spray it on the leaves and stems of the tomatoes.
3. Yarrow. First you need to cut 80 grams of leaves of this plant, and then fill it with a liter of water. After a couple of days, the solution must be filtered and sprayed on the seedlings.
4. Soap solution. To use, dissolve one piece in hot water. laundry soap, grated, for 6 liters of water. Then take a sponge and try to evenly apply the solution to the leaves and stems of plants affected by insects. To be on the safe side, you should also sprinkle the soil next to the diseased seedlings.

Any of these solutions must be treated vegetable crops. Experts say that these measures must be carried out 2 times a month. Everything will depend on the state of the problem and how advanced the situation with the vegetable disease is.

Many people try to use products in the fight against whiteflies that help in the fight against other insects, for example, bedbugs, ticks or lice. Those who decide to get rid of whiteflies using lice repellents will not be able to do this, since only specialized means of combating the annoying insect are used. If folk remedies fail, summer residents use the chemicals and insecticides listed above.

Preventive measures

To avoid a repeat problem in the future, it is recommended:

1. In the fall, after harvesting, dig up the soil in the greenhouse, remove weeds and excess tops.
2. A compost heap can become a wintering habitat for whiteflies, so you should not place it on a dug-up area.
3. Summer residents also recommend the use of drugs that strengthen root system plants.
4. If the seedlings are ready to endure the winter, then it is best to introduce pests into the greenhouse. Whitefly in winter greenhouse will not be able to survive the cold season and breed offspring, since her native warm climate will be absent.
5. Try to inspect the leaves more often for the presence of larvae, and also do not forget to immediately combat this harmful insect.

Conclusion

There are many ways and methods to combat whiteflies. Every summer resident or farmer can always cope with a garden pest. It is only important to remember that it is better to prevent a problem than to deal with it later throughout the summer season.

This small insect came to the European continent from countries South America with a warm and humid climate. Therefore, its main habitat becomes enclosed spaces with high humidity. Since in a short time the whitefly can cause damage to plants significant harm, then many methods have been developed to combat the pest in greenhouses.

Tiny insect causes a lot of damage in agriculture

Choosing effective method How to get rid of whiteflies, it should be understood that it should affect not only the sexually mature individual, but also the insect larvae.

The body of an adult is yellowish in color and covered with a white coating. Its length is about 2 mm with a width of 0.4 to 0.7 mm. On the head are clearly visible long antennae and a pair of dark eyes.

Two pairs of opaque white wings, like the body, are covered with pollen. Sometimes they may have dark blurry spots different sizes. The insect has 3 pairs of legs, divided into segments, that are clearly visible.

Life cycle of a pest

In conditions temperate climate The whitefly can overwinter both near the surface of the earth in a layer of plant debris and under the bark of trees. Therefore, when deciding how to get rid of whitefly larvae in the ground, you should dig up the soil in order to freeze it, promptly burn fallen leaves and grass, and also turn over compost heaps.

Life cycle of a pest

Adult females begin to lay eggs in the second half of spring or early summer, when stable air temperatures range from 20 to 30°C.

Insects attach eggs to the lower surface of leaves in small chaotic groups or in the form of rings of 50-300 pieces. By appearance they resemble clusters of transparent scales.

After 9 days, a larva emerges from the egg and goes through 4 stages of development:

1. At the first stage, the length of the larva does not exceed 0.3 mm. The body has a flat oval shape, with antennae and legs visible on it, allowing the larva to move in search of food during the first 15 hours after emerging from the egg. Having found a suitable part of the plant, it sticks to it, stops moving and begins to actively feed. Together with the juice, the larva receives the amino acids necessary for its further development. This phase lasts about two weeks and ends with the molting process.
2. The second stage is characterized by the appearance of not yet developed antennae and legs.
3. At the third stage, the nymph's body becomes greenish and covered with a wax-like coating. Eyes appear on the front of the body.
4. At the fourth stage, the size of the larva reaches 0.75 mm. The body ceases to be flat and becomes noticeably rounded. Over the course of 13-15 days, anatomical formations characteristic of adult individuals appear on it.

After emerging from the pupa, the imago is ready to reproduce. Therefore, fertilization, egg laying and death of insects occur within 14-30 days.

There is no clear answer to the question whether a whitefly that overwinters in a greenhouse can produce offspring at this time or whether this requires it to overwinter in a dormant state. The development process of an insect is very dependent on temperature regime ambient air and the presence of a nutrient substrate.

In heated greenhouses with temperatures above 25°C, reproduction occurs throughout the year. But whether a whitefly can survive in a greenhouse where there is no heating, or whether it dies in winter, depends on the quality of soil cultivation.

Signs of plant infection

You may not immediately suspect that a whitefly has appeared in the greenhouse. This is due to the fact that the eggs, which look like translucent scales, are located on the back surface of the leaves and do not manifest themselves in any way. Only after the larvae emerge from them can you notice a change in the condition of the plants, indicating that they have a whitefly infestation, and think about how to deal with it in a greenhouse.

It is quite difficult to notice the eggs by chance, since they are on the back of the leaves

When planting plants in a greenhouse, you need to know what causes whiteflies to appear and what factors contribute to this. The main ones include:

• temperature range from 20 to 30°C;
• increased humidity coefficient;
• crowding of plants;
• poor or no ventilation.

If the greenhouse is heated during the cold season, then the whitefly overwinters in it, maintaining its ability to reproduce. At the same time, there are several answers to the question of where whiteflies come from in a greenhouse:

• migrates independently from open areas;
• introduced with infected plants;
• gets in with humus or compost.

Knowing the conditions in which the whitefly prefers to develop, you can decide how to get rid of it in the country.

How to remove whiteflies from a greenhouse

When choosing a way to defeat whiteflies in a greenhouse, you should take into account the type of plants planted in it, the degree of infestation and technical specifications, allowing for various types processing.

In greenhouse conditions, the pest feels great, so it is imperative to fight it

For processing ornamental plants you can use any methods, but if we are talking about fruit crops ah, then preference should be given to mechanical and biological methods.

For example, when deciding how to deal with whiteflies on tomatoes and cucumbers during the flowering period, you can use traditional methods of spraying with decoctions of certain plants or washing the foliage with laundry soap. When there are fruits on cucumbers and tomatoes, traps and mechanical collection of adult moths and their larvae are suitable.

Treatment of the greenhouse in the fall immediately after harvesting helps to minimize the possibility of insect spread:

1. Before carrying out such activities, the greenhouse space should be cleared of old plants infected with whitefly. They must be burned and not buried in the ground or stored in an open area.
2. Next, before digging up the ground, it should be treated in the fall against whiteflies with a mixture of equal parts copper sulfate and lime. Experts recommend dissolving 400 g of the mixture in 10 liters of water. This procedure can be carried out no more than once every five years. Alternative option is a solution of potassium permanganate, diluted to a faint pink color.
3. To get rid of whiteflies in a greenhouse, you need to remove transparent coating structures made of polycarbonate or other material for the entire cold period. If this is not technically possible, soil freezing should be ensured in any other possible way.

Mechanical method

Most safe methods Mechanical methods of combating these pests are:

1. First, you must try to remove all the larvae and adults by hand or wash them off with water and laundry soap dissolved in it. The disadvantages of this method are the labor intensity and duration of the process. It is logical that it will not be possible to destroy all pests 100%, but this will help preserve the plants and harvest the harvest.
2. The most effective and well-proven remedy against this pest in greenhouses are glue traps. Finished goods You can buy it or make it yourself. For this purpose, it is worth using cardboard or pieces of plywood painted orange-yellow, which attracts insects. Next, you should bring a mixture of equal parts of castor oil, rosin, caramel and petroleum jelly to a homogeneous mass in a water bath. Let it cool slightly, smear the prepared forms with it and place them next to the infected plants. Adults very quickly fly to the bait, stick to it and die, but the eggs remain intact.

This method is most suitable for spring period, when there is a mass emergence of females after wintering, as well as for the time of fruit ripening and harvesting.

Chemicals

In case of ineffectiveness mechanical methods, it is worth resorting to the help of synthetic control drugs that help destroy pests at all stages of development. You should carefully study the effect of water-soluble tablets, powder, liquids and solutions that allow you to use chemicals to fight these insects.

The list of the most popular drugs used to poison whiteflies in a greenhouse includes:

• “Aktara”, which affects the digestive system of adults and larvae in such a way that they stop sucking juice from plants, continuing to maintain their viability for a certain period.
• “Aktellik”, spraying with which leads to the death of pests within an hour.
• "Oberon" kills whitefly nymphs and sterilizes mature individuals.
• "Karbofos" almost instantly kills insects and their larvae only with direct contact during spraying.

A regular fumigator will also help in the fight against whiteflies. Having placed the fumigator as close as possible to the accumulation of insects, the person should leave the room, returning to it only after thorough ventilation. After a week, the procedure should be repeated to destroy the larvae that hatched from the eggs during this time.

After harvesting, in winter and before planting plants in spring, it is necessary to disinfect greenhouse soil from whiteflies using copper sulfate or potassium permanganate.

Biological method - destruction of whiteflies by other insects

Experience shows that insects that are its natural enemies help get rid of whiteflies in a greenhouse:

1. Encarzia. The female of this rider causes the death of whitefly larvae by laying her eggs in them. The rider is launched into the greenhouse 10-14 days before the seedlings are planted.
2. Macrolophus bug. During its life, this predator is capable of destroying up to 2,500 pest larvae in 1 month.

The whitefly is also afraid ladybug, which, when entering the greenhouse, significantly reduces the number of its larvae.

Folk remedies

To quickly get rid of whiteflies on vegetable crops, you can treat them with such means as herbal infusions and soap solution.

There are many folk remedies that help fight pests

When choosing how to get rid of whiteflies on vegetable crops, you can try treating them with folk remedies that do not have a harmful effect on humans:

1. Dandelion infusion. Take 0.04 kg of chopped roots and green parts of the plant, pour them into a liter hot water and leave for three days protected from sun rays place.
2. Garlic infusion. Chop 2 medium cloves of garlic, add 500 ml of water and leave for a week. For spraying, dilute 5 ml of product in 1 liter of water.
3. Infusion of yarrow. Grind 100 g of plant leaves, pour in 1 liter of boiling water, keep in a dark place for a day, then filter.
4. Laundry soap solution. Using a knife or grater, chop a piece of soap and dissolve it in 6 liters of water. This product can be used to spray tomatoes, cucumbers and other vegetable crops, and also treat the green parts of plants with it using a sponge.

Repeated treatment should be carried out after 7-10 days, when the larvae emerge.

Fumigation

The most effective remedy for whiteflies in a greenhouse is sulfur bomb. Its smoke envelops all parts of the plants, penetrates the soil and hard to reach places premises, destroying pests.

Sulfur bombs emit smoke that kills pests even where humans cannot reach

However, in case of severe infection, it is necessary to repeat the procedure 2-3 times with an interval of 7-10 days. This is due to the fact that the smoke bomb used to destroy whiteflies in a greenhouse has an effect only during fumigation and for 2-3 hours after it. During this period, insect eggs do not lose their viability.

How to get rid of whiteflies on vegetables and other plants in open ground

It seems that fighting the described pest in open conditions easier than in a greenhouse, since at subzero temperatures it dies. However, if there is an infested greenhouse in one of the nearby areas, then immediately after the onset of warm days the insect spreads very quickly and affects tomatoes, cucumbers and other vegetable crops. In this case, immediate destruction measures should be taken.

If a whitefly appears on a strawberry, then before choosing a chemical preparation, you should try to influence the pest using the natural means described above. But if the insect has already given birth to offspring, and a sooty coating is noticeable on the foliage, then it is impossible to do without insecticides.

When deciding how to get rid of whiteflies on strawberries, grapes and other fruit crops, preference should be given to products whose active ingredient is avermectin, because it does not accumulate in plant products. Preparations containing organophosphorus compounds and pyrethroids remain in the soil and fruits for a long time, having a negative effect on the human body.

To spray fruit crops, you need to select the right chemicals

To disinfect an area from both whiteflies and other pests, spraying should be carried out once every 7-8 days until all insects are exterminated, observing the following rules:

• on this day there should be no precipitation and strong winds should not blow;
• insecticides should be alternated, as the drugs quickly become addictive and lose effectiveness;
• Do not carry out the event on a hot sunny day to avoid burns on the leaves.

Those who grow strawberries and do not know how to get rid of whiteflies are recommended to additionally spray in August. This will prevent insect eggs from contaminating the soil.

How to get rid of whiteflies on indoor plants

Knowing how to get rid of whiteflies in a greenhouse will help you get rid of them on flowers grown in pots at home. Need to:

• isolate the affected plant;
• disinfect flower pallets, window sills, shelving and windows with a soap-alcohol solution;
• cut off and burn all affected parts of plants;
• take off top layer humus in flower pots.

Next we get rid of indoor flowers at home from eggs and larvae of the pest by wiping the leaves with the mixture ammonia with water (1:9) or tar soap dissolved in water. But indoor crops such as geranium, pelargonium, violet and other flowers with pubescent leaves are best sprayed to get rid of whiteflies. To destroy sexually mature individuals, we use mosquito traps and fumigators.

You can get rid of whiteflies on indoor flowers using both folk and chemicals. Most effective insecticidal preparations recognized:

• Akarin;
• Vertimek;
• Fitoverm;
• Aktara;
• Tanrek.

Experienced flower growers advise alternating medications that help get rid of whiteflies on myrtle, spathiphyllum and other flowers, as they quickly become addictive in insects.

Prevention

Before leaving the greenhouse for the winter, it should be treated against whiteflies and other garden pests, following the care tips:

1. Burn all plant waste left after harvesting.
2. Dig up the soil.
3. Ensure freezing of its deep layers by removing the top covering from the greenhouse.
4. Don't arrange compost pits in the greenhouse.

Work in the greenhouse in the fall, if there was whitefly in it, should include treatment load-bearing structures structures with a solution of bleach.

TO preventive measures This also includes the application of nitrogen fertilizers, which increase the resistance of plants to infection by insects, fungi and infectious diseases.

In the spring, purchased plants should not be immediately planted in a greenhouse. It's best to keep them in separate room“quarantined” to check for pests.

Cleaning the area around the greenhouse

To get rid of whiteflies in a greenhouse, it is worth removing plant debris and fallen leaves from the area adjacent to it, and also treating the tree bark with a bleach solution. But the soil in the greenhouse should be treated with copper sulfate even before planting vegetable seedlings.

Whitefly is one of the most annoying and voracious pests that attack protected soil crops. Many summer residents are forced to annually use various methods combating whiteflies that have settled in the greenhouse. The main task in this case is to kill the butterfly and its offspring in such a way as not to poison the fruits.

General information about the pest

The whitefly is a tiny milky midge with matte wings. The body and paws are covered with a powdery coating. Her maximum size barely reaches 3 mm. There are about 200 species in total, but gardeners are mainly annoyed by only four: cotton, greenhouse, cabbage, and strawberry. They are carried by gusts of wind or with the ground (larvae).

The whitefly loves warmth and humidity - the conditions that a greenhouse creates. It is the plantings of protected soil that usually become the object of its attack. The worse the ventilation and the denser the vegetation, the more favorable the environment for the development of the pest.

In greenhouses, the whitefly prefers to settle on the following crops:

• cucumbers;
• eggplant;
• tomatoes;
• peppers;
• cabbage seedlings.

At temperatures below +10 °C, the life activity of midges stops, the larvae stop growing and developing.

Signs of defeat

Entering the greenhouse, you can notice small white midges swarming on the leaves and flowers of plants. If you turn over a sheet of platinum, you will find a mass of eggs in the form of black, yellow and green dots, arranged in circles and loops, as well as mobile and immobile larvae, adult whiteflies. The pest first colonizes young leaves.

The first sign of the presence of a whitefly, even before the population grows, is tiny yellow dots on the leaves - traces of punctures from its chitinous proboscis. You may notice some stains on the reverse side white plaque, as in powdery mildew. Subsequently, the leaf is completely covered with it, turns black and dries out.

The whitefly carries various viruses, so the result of its activity is often not only dried leaves, but also infection of the greenhouse with chlorosis and mosaic.

Fighting methods

Whitefly larvae are resistant to most chemicals, therefore, the main goal should be the destruction of adult individuals and stopping the reproduction process. The first step is regular ventilation. The whitefly prefers a closed ecosystem, so drafts will scare it away from its home. To destroy a colony, several treatments will be required, and different preparations must be used for adults and larvae.

Mechanical methods

First of all, you should try a safe but troublesome method - washing off the whiteflies from the leaves with soapy water. Good for household or tar soap. Dissolve 30-50 g in a liter of hot water, then pour the solution into a bucket. Washing and spraying are done three times at weekly intervals.

You can increase the effectiveness of the product - add 150 ml of kerosene to the soap solution, stir thoroughly until the consistency of the emulsion, then pour in another 5 liters of warm water. This solution is intended for soil treatment; only a small amount is allowed on the plant. The greenhouse is closed for 3 hours, then ventilated. Since only adult whiteflies die from the fumes, the procedure is repeated after 4 and 8 days.

Some people recommend using a hose to kill the midges, but this crude method is not suitable for most greenhouse crops. Soap treatment will wash away the fungus, honeydew and whitefly larvae, covering the leaf blade with a protective film.

In addition to the soap treatment, you can place sticky traps around the greenhouse. Special devices(yellow tapes and sheets) for catching whiteflies in a greenhouse are sold in garden stores. In this way, adult individuals are eliminated.

If the whitefly colony has grown to alarming proportions, you can make homemade large traps.

1. Prepare several sheets of yellow or orange cardboard.
2. Heat a little rosin in a water bath (this is a resin sold in jars in construction and hardware stores).
3. Add honey, castor oil and Vaseline to the heated resin. All components are taken in equal volumes.
4. Coat the cardboards on both sides and hang them around the greenhouse, preferably higher.

Whiteflies actively flock to traps, stick and die.

You can use ready-made entomological glue (for example, Polifix, VLN-11).

In the fight against whiteflies, you can involve entomophages - insects that will deal with the pest without outside help. These include:

• macrolophus bug;
• encarzia (a fly similar to a flying ant);
• lacewings (flies);
• ladybugs;
• ichneumon beetles.

Macrolophus and other entomophages can be purchased in stores or ordered on specialized websites. It is advisable to populate the greenhouse in advance, but it is quite acceptable to develop the population immediately during a whitefly attack.

Spraying with infusions

Spraying plants homemade solutions based on herbs is an effective folk method of combating whiteflies. It takes a few days to prepare, so it's best to take precautions first. mechanical removal pest

• Grind a large head, add 0.5 liters of water, close tightly, leave for a week. Strain and dilute for spraying in a proportion of 6 g of infusion per liter.
• Dandelion. Pour approximately 100 g of roots and leaves into a liter of water, leave for 5-6 days, then strain and spray the plants.
• Sagebrush. Pour 100 g of leaves into 1 liter of water and leave for 5 days. The strained infusion is ready for use.

Before spraying, you can add a little sugar to the solution so that the repellent substances remain on the leaves longer.

You can also use yarrow, tobacco dust against whiteflies. The pest does not like the smell of nasturtium and dill. These plants can be planted in a greenhouse or placed between plantings in pots so as not to disturb the root system. Dill and other umbelliferous herbs, sown even before planting the greenhouse, save many summer residents from problems with whitefly.

An unusual, but effective and proven folk remedy for whiteflies is an infusion of cigarette butts. About a handful is soaked in a liter of water for a couple of days, then strained. The resulting liquid is suitable for spraying plants and watering the soil.

Biological drugs

Whiteflies often attack greenhouses in the midst of ripening and harvesting. Summer residents, not without reason, are afraid to use “heavy artillery” to combat it in the form of pesticides, the decay period of which is 30-60 days. Bioactive preparations based on fungal waste products can help out:

• "Aktofit";
• "Agrovertin";
• "Avertin";
• "Aversectin-S";
• "Verticillin".

The non-pathogenic fungus, during its development and life, releases highly specific neurotoxins (avermectins). They are destructive not only for whiteflies, but also for most sucking insect pests, without causing their adaptation. The toxin is safe for worms, plants and warm-blooded animals.

The substance disintegrates after 2 days, so treatments with the drug in a proportion of 0.6 ml/l are allowed during the fruiting period. After about 6-8 hours, the whitefly larvae will stop feeding because their digestive system will be paralyzed. They will die on the second or third day. Mass mortality of whiteflies is observed on the fifth or sixth day. Treatments are carried out 2-3 times at weekly intervals. It is advisable to direct the sprayer (finely dispersed is most effective) directly onto the back side of the sheet in order to precisely cover the eggs and midge larvae with the product.

Preparations based on entomopathogenic nematodes (Antonem-F, Nemabakt) are also effective against whiteflies. For the nematode to emerge from suspended animation, heat and humidity are necessary, so it is advisable to first spray the plant leaves with water. Nematodes penetrate whitefly larvae and poison them with excretions. Death occurs within 2-3 days.

Bacteria-based products are also available:

• "Bikol";
• "Bitoxibacillin";
• "Entobacterin".

Bacteria settle into whitefly larvae, grow through the integument and destroy them.

Chemicals

It is better to use chemical-based preparations before fruiting or after harvesting the fruits (in order to get rid of whitefly larvae on next year). The following remedies are effective:

• against adult midges - “Aktellik” (2 ml/1 l), “Akarin”, “Confidor” (01.ml/l), “Aktara” (for watering), “Tanrek” (5 ml/10 l);
• against larvae - “Admiral”, “Mospilan” (4 g/10 l), “Match”, “Spintor”;
• against sooty fungus - “Topaz”, preparations with copper.

It is necessary to treat with a complex of preparations, since the cover of whitefly larvae does not allow substances that are active against adult individuals to pass through.

Experienced gardeners advise desperate colleagues to use benzyl benzoate emulsion sold in pharmacies. Dilute for spraying in a ratio of 50 ml/l of water.

Preparing for winter

Many summer residents unsuccessfully try to remove the whitefly from greenhouses for several seasons in a row, but the pest returns again. To prevent whiteflies from breeding in next year, it is necessary to prepare the greenhouse for winter.

In the fall, all plant debris is collected and removed. It is recommended to wash polycarbonate structures with a regular floor cleaner with a disinfectant effect, spray all the cracks and internal parts frame (especially wooden ones) with insecticides, spill the soil with Aktara. Then treat the greenhouse smoke bomb(for example, “Climate”, consumption 300g/20m 3, “Peshka-S”, “Hephaestus”). Tobacco or sulfur blocks can also be used during the growing season - they are safe for plants.

The whitefly does not like an alkaline environment, so it makes sense to play it safe by cultivating the soil: add slaked lime (200 g/m2) or ash (3 cups per 1 m2) when digging. Additional guarantees of getting rid of the pest will be provided by a complete change of the top layer of soil. Whitefly eggs are found at a depth of approximately 5-8 cm.

In winter, at temperatures below -15°C, the whitefly will die. To do this, there is no need to leave the greenhouse open, since visits from cats and other animals can seriously damage the soil. If protected soil is usually mulched for the winter, then after a whitefly invasion you should not do this, otherwise its eggs will not freeze under the cover. Throwing snow or opening the roof in winter period also not necessary.

Prevention

As a preventative measure, the area should be destroyed with wood lice, woodlice and nettles - these plants are attractive to whiteflies. Some gardeners have noticed that mint and tansy are also bait for pests, although a number of information sources strongly advise using these herbs as repellents.

After planting, it is useful to spray the seedlings with biological preparations so that the whitefly has no chance of reproducing. Avoid stagnation of air in the greenhouse, excessive humidity, and thickening of plants. Tomatoes need to be pruned in a timely manner, and excess vines from cucumbers need to be pinched.

It is very difficult to remove whiteflies indoors. Even from one egg that survived the winter, a whole colony will grow again in a short time, so you should not neglect the autumn treatment of greenhouses and preventive measures. If you notice a pest while its settlements are rare, then there is a chance to get by traditional methods without resorting to chemicals.

Friends, the whitefly is an insidious insect! The fight against it is one of the most difficult, but possible. In this article we will learn how to get rid of whiteflies in a greenhouse.

The main thing is not to be late!

Friends, keep in mind that many insecticides (and pesticides too) in this case may become ineffective. The fact is that the fight against whiteflies in a greenhouse should take place when the insect is in the larval stage or in the imago. For more later all chemicals will become useless.

What is a whitefly?

This is a garden pest that looks like aphids. The whitefly has a yellowish tint. The length of its body is no more than 1.5 mm! It will be very difficult to identify it with the naked eye. Thousands of swarms of whiteflies destroy the plant in a matter of days, sucking all the juices out of it!

Not everything is sour cream for the cat!

Before we tell you how to get rid of whiteflies in a greenhouse, we should make a small disclaimer. Please note that it is greenhouse crops that are more susceptible to attacks from this pest, because the whitefly’s favorite place is greenhouses and greenhouses! It is in them that ideal climatic conditions are created for the insect.

As we said above, very often the fight against whitefly may be ineffective due to delay and lack of necessary integrated approach to this problem. We'll talk about this further.

How to get rid of whiteflies in a greenhouse?

If you approach this wisely, you can not only protect the future harvest and existing plants from this pest, but also prevent its further occurrence! How to do this? Comprehensively! This requires treatment of greenhouse crops with special insecticides. Which ones exactly? Now you will find out everything!

1. Spring is the time when the first adult whiteflies appear. It is at this time that everything must be done to prevent them from multiplying. To do this, you need to water the plants in the greenhouse. special means trademark"Aktar" (be sure to read the attached instructions). Note that it is effective drip irrigation. The drug "Aktar" affects new larvae through a conductor in the form of a treated plant for 20 days.
2. If there are already a lot of whiteflies, use a tank mixture of Talstar and Comfidor. However, that's not all!
3. But what to do if all stages of development of this insect are already observed? How to get rid of whiteflies in a greenhouse in this case? To do this, it is necessary to use special mixtures that act on eggs, larvae and adults of the insect. Choose mixtures of “Fitoverma” and “Admiral” and the same “Comfidor” and “Talstar”. Carry out up to four treatments at weekly intervals. You can use “Imidor”, “Biotlin”, “Novaktion”, “Kalash”, “Kemifos” and other chemicals that the whitefly in the greenhouse is so afraid of.
4. How else to fight this insect? Friends, you can properly freeze the greenhouse in winter time year. Temperatures of 10-15 degrees below zero are destructive for whiteflies.