Processing of the greenhouse in the fall from the whitefly


Pest control is the key to a good harvest. Therefore, experienced gardeners take preventive measures to prevent pests in greenhouses even in the fall. Get rid of the whitefly in the greenhouse in the fall is not difficult, there are several ways.

Whitefly: Signs Appearing in a Greenhouse

Greenhouse - closed space. On the one hand, favorable conditions for plant development have been created here, the necessary microclimate is maintained. But, on the other hand, the same microclimate also contributes to the appearance of pests, in particular, the whitefly. Under natural conditions, the whitefly lives in a warm tropical climate. In our region, the insect prefers greenhouses, closed premises, parasitizes on indoor plants.

Signs of a dangerous insect in the greenhouse:

  • there are punctures on the leaves of the plants, as well as colorless holes;
  • Dark spots in the form of necrosis are visible from the bottom of the sheet;
  • small white midges are noticeable on the underside of the leaf plate; if the leaf is shaken, they fly up.

If one or more signs appear, pest control measures should be taken. Destroying the whitefly in the greenhouse in the autumn is important because in the spring it will destroy the planting and will not allow the plants to grow. If you hang the yellow traps with liquid glue, then at the end of the day you can see the scale of the problem. A huge number of insects fall into the "trap".

Whitefly Harm

This insect punctures the leaves of the plants and sucks the juice out. This weakens the plant. The whitefly in the process of vital activity releases sweet substances on which fungi dangerous for garden crops can develop. The insect is especially dangerous for tomatoes, beans, cucumbers and eggplants. This pest contributes to the development of dangerous diseases for plants. There are cases when the yield dropped to a minimum. The pest is able to destroy everything that will be planted in open and closed ground. On one plant may be pests in different life stages. This complicates the fight. The damage caused by the whitefly is difficult to calculate because it can destroy entire plantations of cultivated plants.

Insect life cycle

The life cycle of an insect consists of three stages: egg, larva, adult.

The adult insect is a small butterfly of sizes up to 3 mm. Appeared as a pest of protected soil, but also in open garden plots has found application. On one plant 3 stages of development of an insect are presented. Weather permitting, it takes 18 days from the larva stage to the adult pest. In summer, whiteflies breed quickly: in 1 season, each individual lays up to 300 eggs.

In winter, the pest lives under the bark and in winter-prepared grass remains.

Does the whitefly die in the greenhouse in winter?

If frost does not reach the greenhouse, the whitefly, eggs and pupae will calmly survive the winter. When the pupa freezes through the soil, the pest will die. Therefore, room freezing is used as a security measure. Residents of the southern regions of this method of struggle is not suitable.

How to get rid of the whitefly in the greenhouse in the fall: a set of measures

First of all, it is necessary to remove the weeds: often the pest with them falls into the greenhouse. Many gardeners burn all weed, destroying entire armies of insects harmful to cultivated plants. Then you should prepare the room for processing. The methods of control can be chemical, biological, the use of proven folk remedies is also justified. Optimal for the struggle to apply an integrated approach. In this case, you can get rid of the insect in a short time and for a long time.

How to process greenhouse from whitefly in autumn

Mechanical action does not help to completely destroy the pest, and therefore can not do without chemicals. Chemicals help as quickly as possible to remove a large number of pests, as well as secure the next year's crop. But they should be handled with care, as they can harm human health, pets and beneficial insects.

Getting rid of a whitefly in a greenhouse in winter is easier than doing it at other times of the year. This pest is afraid of frosts, and therefore even regular airing will have a negative effect on the vital activity of the butterfly and its larvae.

Greenhouse preparation for processing

For effective processing should prepare a greenhouse. We need to remove from there weeds, debris, as well as the remnants of patients affected by the whitefly, plants. General cleaning with cleaning of all surfaces. If the surfaces have cracks and cracks - clean and process. Wood surfaces are recommended to whiten.

Experts recommend treating the greenhouse with a solution of bleach for disinfection:

  • 2 kg of lime;
  • 10 liters of water;
  • 100 g of copper sulfate.

If necessary, the greenhouse should be repaired in order not to carry out repair work in the poisoned room. If the gardener wants to use traditional methods, such as smoke, then in the greenhouse it is necessary to close all doors and windows tightly.

Directly film or glass coating can be washed with soapy water. And also it is necessary to dig up, break through the earth before processing.

How to treat the greenhouse in the fall after the whitefly chemicals

The fight against whitefly in the greenhouse in the fall necessarily includes treatment with chemicals. These are the most effective and productive methods of fighting insects that can destroy the crop.

The main substances to fight insects dangerous to the crop:

  1. Copper sulfate. If you are sure that there are pests in the ground, you need to use a dosage of 200 grams of vitriol per 10 liters of water.
  2. Potassium permanganate Several grains per 10 liters of water. Cultivate the soil and the plants themselves. You can sprinkle the leaves or wipe from the back of the plate.
  3. "Aktara" - a specialized drug that saves from the whitefly, but is used for watering seedlings.

For the fight with whitefly eggs in the autumn it is better to use hormonal drugs, such as "Admiral". The integrated use of hormonal and chemical substances completely destroys the pest in all life cycles.

How to remove the whitefly from the greenhouse in winter with biological preparations

There are drugs that do not belong to the chemical, because they do not harm plants, humans and animals. Biological preparations are based on living beneficial microflora.

100 m2 greenhouse areas are used:

  • lepidocide - 30 ml per 10 liters of water;
  • phytocide - 300 ml;
  • Bitoxibacillin - 100-150 ml.

In these preparations, you can soak the seeds in the spring - additional disinfection.

As well as the biological method used settling of natural enemies of the whitefly. These include: ladybug, bedbug macrolofus, golden-eyed. But these insects do not live in winter, and therefore they are recommended to be placed in a room in the spring several weeks before the seedlings. With sufficient reproduction, the natural enemies of the whitefly are able to reduce the insect population several times.

How to deal with the whitefly in the greenhouse in the fall of the national methods

Popular methods include freezing greenhouses. Suitable for rooms that are located in the northern regions, where frosts occur early. It is necessary to open the doors, windows, it is possible to remove the film and leave it open for the night. This will help to significantly reduce the pest population. The larvae in the ground just freeze.

The second method is tobacco smoke. You need to buy a couple of tobacco checkers or a few packs of cheap non-filter cigarettes. Close the windows and doors, create smoke. It is detrimental to pests in different stages of life.

And also the pest does not like ash - its application to the soil in the fall will have a beneficial effect on the harvest and will reduce the number of white flies.

Preventive measures

To avoid poisoning the pest in the fall, you should be careful about greenhouse planting and prevent dangerous conditions that will be favorable for the whitefly and other pests. Prevention measures:

  • when planting all the seedlings must be inspected carefully from two sides of the sheet;
  • do not overfeed the plant with nitrogen fertilizers;
  • strictly observe the mode of watering;
  • time to remove all weeds, as well as to avoid littering the area with grass.

Proper agricultural practices - the first measure of prevention. If a plant has strong immunity, it will scare off insect pests itself. Treatment of the greenhouse from the whitefly in the fall is another preventive measure that will help fight the pest and prevent it from destroying the crop.


Getting rid of the whitefly in the greenhouse in the fall is one of the mandatory measures to protect the future crop from diseases and pests. If you do not take emergency measures, the small white butterfly can completely leave the greenhouse without a crop. Methods of pest control are complex in nature and include the treatment of the greenhouse with chemicals, biological preparations, as well as the use of popular folk remedies. With proper prevention, the pest will not be able to affect the plants, the population of the harmful insect will be reduced.