Popular remedies for whitefly. How to prepare solutions and process plants?

Unfortunately, warm and rainy weather favors not only plant growth. Various insect pests are activated, in particular the whitefly.

There are popular methods of dealing with it, but they do not always help, and then chemicals come to the aid - insecticides.

Next, tell you what kind of insect, what harm from it. When and why does it appear. And also, what are the methods of control and prevention.

Who is this?

It is a small sucking insect, similar to a mole, about 1.5–3 mm long, with two pairs of white wings covered with a powdery coating. Whitefly larvae find a place suitable for feeding on the lower surface of the leaf, attach to it and pierce the leaf to get to the juicy pulp. Adults also feed on leaf sap.

What hurts?

This small insect causes great harm to many plants, especially in the greenhouse:

• piercing the leaf of a plant with its proboscis, may infect the wound;
• promotes the development of soot fungi that form black plaque and lead to the death of the leaf;
• weakens the plant and violates its photosynthesis, the leaves turn yellow, curl, and may even completely die out.

How to find out that she lives on indoor flowers?

On the upper side of the leaves a sticky shiny bloom appears (honeydew) - these are waste products of the whitefly. Black fungi develop on this raid - visible as black spots. If you shake the leaves, a swarm of small white insects will fly up from them.

Causes of

Whiteflies appear in the garden under the following conditions:

• Warm (from 15 ° C and above) and wet weather. If the temperature drops below 10 ° C, insects and larvae die, but the eggs remain.
• Thickened landing with the impossibility of airing.
• Ground contaminated with larvae.

Drugs to fight

For the destruction of insects use special chemicals - insecticides:

1. intestinal - penetrate into the body of an insect with the juice of plants;
2. contact - get through the skin;
3. systemic - make plants poisonous to insects, entering the roots, leaves and vessels;
4. fumigants - penetrate into the respiratory tract of insects.

There are many varieties of insecticides against whitefly, most of them are systemic, contact-intestinal action.

Tanrek

Water-soluble concentrate, sold in 1-1.5 ml ampoules, 10, 50, 100 ml bottles and 1 l cans. Price: from 12-15 rubles per ampoule to 250-280 rubles per bottle.

It acts on the nervous system of insects, causing paralysis and death.

Preparation of the solution and processing

1. Dissolve the required amount of Tanrek in 1 liter of cold water, then bring to the required volume.
2. To better adhere to the drug leaves, you can add to the solution of liquid soap.
3. Prepare the solution sprayed plants using a spray.

The solution must be spent within two days. Tanrek is absorbed within 2 hours in the stems and leaves, striking most of the larvae of the whitefly. The rest die in 3-5 days. The effectiveness of the drug retains within 3 weeks on the leaves and stems, up to six months - in the soil.

Pros:

• acts quickly, after precipitation is not washed off;
• protects the plant for a long time, so you can restrict a single treatment.

Minus - poisonous for humans and bees.

Most insecticides against whitefly reduce efficacy in the sun.therefore it is better to spray the plants in cloudy weather.

Teppek

Water-soluble granules in plastic bottles of 0.14; 0.25; 0.5; 1 kg. Price: from 2700 rubles for 0.14 kg to 9000 rubles for 0.5 kg.

Preparation of the solution and processing

The procedure is the same as for Tanrek. It starts to act in half an hour after spraying., insects continue to die for 5 days. When processing it is necessary to be guided by the forecast - if it rains in the coming hours, the drug will cease to act.

The duration of the poisoning effect is a month. You can handle up to 3 times per season at intervals of at least a week.

Pros:

• high-speed;
• low consumption rates;
• insignificant impact on the environment, low hazard to bees.

Less - efficiency depends on weather conditions.

Fitoverm

This insecticide contains waste products of soil microorganisms. Sold in the form of an emulsion in ampoules of 2, 4, 10 ml, in bottles of 400 ml and 5 l canisters.

The composition has a sticky substance that helps keep Fitoverm on the plant. Price: from 10 rubles per pack of 2 ml to 2,700 rubles for 5 l.

As a result of treatment with Fitoverm, whiteflies and their larvae stop feeding and die.

Preparation of the solution and processing

1. The solution is prepared the same way as from Tanrek.
2. Spray, evenly wetting the leaves, in a dry, warm (20-25 ° C) and calm weather for 8-10 hours before watering or the expected rain.

After 6-12 hours after treatment, the nutrition of whiteflies stops, after 2-3 days they die. Efficiency lasts up to three weeks.

Pros:

• does not pollute the environment, quickly collapsing in water and soil;
• it is possible to collect fruits in 2 days after spraying.

Minuses:

• when the air temperature drops to 15-17 ° C and after rain, toxicity is significantly reduced;
• dangerous for bees;
• strong odor.

It is undesirable to process plants during flowering. In agricultural farms, the use of insecticides is allowed at a distance of no less than 4-5 km from bee hives.

Confidor

Water-soluble granules in bags of 1 and 5 g or in bottles of 500 g Price: from 27 r per 1 g to 12 000 r per pound. It affects the nervous system of the whitefly, causing paralysis and death.

Preparation of the solution and processing

1. Dissolve 1-2 g of the drug in 100 ml of water.
2. Then the resulting solution is diluted in a bucket of water.
3. Sprayed plants.

The finished product can not be stored, must be used for one treatment. Begins to act after an hour, the strongest effect - on the second day after application. Efficiency persists from 2 weeks to a month.

Pros:

• continues to act even after rain, resistant to flushing;
• can be used in hot weather;
• non toxic to surrounding plants.

Minus - dangerous for bees.

Aktara

Water soluble granules in packs from 4 g to 1 kg. Price: from 120 rubles for 4 g to 2350-3100 rubles for 250 g and 11,700 for 1 kg.

The larvae of the whitefly in the process of feeding, penetrating into the leaves and plant stems through the vessels, do not enter the fruit.

Preparation of the solution and processing

The granules are dissolved in warm water (8 g per 10 l). Apply Aktaru not only for spraying on the leaves (protective effect - 15-30 days), but also for irrigation under the root (40-60 days in the soil on the larvae of the whitefly). The strongest toxic effect is from 20 hours to 3 days after treatment.

Pros:

• keeps efficiency at a bright sun and after a rain;
• practically does not smell;
• no danger to humans or animals.

Minus - addictive occurs when repeated treatments.

Actellic

Concentrate emulsion in 2 ml ampoules or in 5 l cans. Price: from 220 rubles for a bottle of 50 ml to 17,500 rubles for a canister of 5 liters.

This insecticide has both intestinal-contact (in the process of feeding) and fumigant (vapors of the drug fall on insect chitin integument) action. It penetrates deep into the leaves, stalks and fruits.

Preparation of the solution and processing

1. The contents of the ampoule are thoroughly mixed with 100 ml of water.
2. Then diluted to the required amount.
3. Sprayed with a spray.

You can use only freshly prepared solution. The drug begins to act very quickly - after 10 minutes and lasts up to 6 hours. Toxicity persists up to 2 weeks. You can re-spray the plants after a week.

Plus - due to the double action can get into hard to reach places.

Minuses:

• strong pungent odor;
• reduced toxicity after rain;
• do not collect fruit within 3 weeks after treatment;
• dangerous for bees.

Aplaud

This is a contact insecticide with an additional fumigant action in the form of powder in packs of 500 g. Drug price: 2400 rubles for 500 g.

Getting into the body of the whitefly larvae, a negative effect on the formation of chitin, as a result, there is no molting and the larvae die. Also prevents the removal of caterpillars from eggs.

Preparation of the solution and processing

Prepare the same as Tanrek. Acts on the larvae not immediately - within a week. It is necessary to spray in 2 weeks after the appearance of adult whitefly - just at this time the larvae hatch. Toxicity persists up to 25 days. It is possible to carry out repeated processing in a month.

Pros:

• does not cause addiction to pests;
• has an additional toxic effect when evaporated from the leaves;
• safe for humans, domestic animals, surrounding plants, bees and fish.

Minus - high price.

Biotlin

Aqueous concentrate in ampoules of 3-9 ml. Price: from 20 rubles for 3 ml to 75 rubles for 9 ml.

The principle of operation is the same as that of Tanrek and Confidor. (same active substance).

Preparation of the solution and processing

Prepare the same as Aplaud.

Spray the leaves from the outside and inside, as well as the stems or stems for 6 hours before watering. Whiteflies begin to die after 2 hours, the period of the greatest activity of Biotlin - up to 3 days. The protective effect of the drug lasts up to 20 days.

Pros:

• quick action;
• not addictive.

The minus is dangerous for beneficial insects: bees and earthworms, as well as for fish.

Glue traps

These are sheets of yellow plastic with dimensions of 25 × 40 cm, on which a special entomological glue is applied on both sides. Price: 80 rubles per sheet.

Attach over plants at a height of 20 cm (1 trap per 10 sq. M) at the beginning of the growing season, as they grow, they outweigh the height. Insects are attracted to the bright color of plastic, they fly to the trap and stick to it.

Pros:

• low price;
• ease of use.

Minus - non-directional action.

Benzyl benzoate

This product (20% emulsion) is sold in a regular pharmacy (used as a scouring agent). Price: for 200 ml 134 rubles.

Preparation of the solution and processing

1. One tablespoon (20-50 ml) diluted in 1 liter of water.
2. Spray the leaves on both sides.

Preventive measures

Do not need to use chemicals if:

• do not thicken the landing;
• provide airing plants;
• Do not spray with water-soluble fertilizers in wet weather;
• promote plant health with biostimulants and fertilizers.