Spring treatment of trees with urea. Top dressing with urea - we feed the plant through the leaves

Carbamide (urea) is a substance of endogenous origin synthesized in the body of vertebrates. The scope of its application is very wide. Urea is used in medicine, cosmetology and, of course, in horticulture and horticulture. Fertilizing plants with this fertilizer must be carried out according to certain rules.

Urea (urea): composition

In horticulture, urea is a nitrogen fertilizer of the highest concentration (up to 46%). It is produced in the form of a crystalline powder of a yellowish or white hue. Carbamide is odorless and readily soluble in water. Some disadvantage of urea is its hygroscopicity. It gains moisture very quickly, so it has to be stored in airtight bags.

Urea is produced industrially from carbon dioxide and ammonia. Nitrogen is included in its composition in an easily digestible amide form.

Main characteristics and application

Carbamide (urea) is the safest nitrogenous fertilizer available today. Subject to the dosage and application technology, it does not burn the leaves and roots of plants. The chemical formula of carbamide is as follows: (NH 2) 2CO.

The use of urea allows you to accelerate the development of garden crops and significantly increase productivity. This action is primarily due to the fact that nitrogen is directly related to the construction of biomolecules. This substance is included in all the most important acids and proteins.

It is especially advisable to use urea in cases where plants show signs of nitrogen deficiency: they grow very slowly, have thin and weak shoots, pale leaves, weak and underdeveloped flower buds.

Urea is also used as a remedy for garden and garden pests. Very well, it helps against aphids, apple flower beetle, weevil, sucker. In addition, it is used in the fight against diseases such as monilial burn, scab and purple spotting.

What to know

Very often, urea is used if the owners do not have the opportunity to use organic fertilizers for the garden. It has roughly the same effect. Of course, this substance is chemical and inferior to manure in terms of ecology. However, unlike organics, urea is a fertilizer that is still much more balanced and makes it possible to do top dressing in a strictly dosed manner.

Urea should be used as a fertilizer, taking into account the fact that when it enters the soil, it changes very quickly under the action of soil bacteria. The conversion process is accompanied by the release of ammonium carbonate. This substance promotes the rapid penetration of nitrogen into plant tissues. However, in air, ammonium carbonate decomposes very quickly. Therefore, urea should be buried deep enough in the soil. For the same reason, urea most effectively affects plants in protected ground - in greenhouses and greenhouses.

Carbamide is a universal fertilizer. It can be used on absolutely any soil. However, it should be borne in mind that different cultures need different amounts of it.

Also, a gardener who decides to feed plants with urea should take into account the fact that it acidifies the soil quite strongly. If the soil in the garden has a low pH, chalk, dolomite flour or limestone should be used along with carbamide in a 1: 1 ratio.

Do not use urea on soils with low urease content. In this case, it is advisable to purchase organic fertilizers for the garden.

Dosages for plants

Below in the table you can see the required amount of urea for certain types of plants.

Compliance with dosages is a rather important condition for the effectiveness of the use of a fertilizer such as urea. Urea, the use of which under no circumstances causes particular harm to plants, in high concentrations, however, can inhibit flowering and fruit development. When the dose is exceeded, as in the case of organic matter, green mass begins to develop rapidly in crops due to fruiting.

Dosages for foliar top dressing

In this case, for garden crops, a solution is usually used at a concentration of 9-15 g per 10 liters of water. When processing shrubs and fruit trees, a more concentrated agent is usually taken.

It is easy to measure the right amount of urea even in the absence of a dispenser. In a tablespoon it contains 10 g, in a matchbox - 13 g, in a glass - 130 g.

Instructions for use

With the use of urea, both conventional and foliar plant nutrition can be carried out. In the spring, it is brought into the ground in advance. The fact is that when carbamide is granulated, a special substance is formed - boiret, which can inhibit the growth of young plants. Therefore, top dressing with urea is carried out approximately two weeks before planting seeds or seedlings. At the same time, it is embedded in the ground in such a way that a layer of soil remains between it and the roots of young plants. In any case, the depth of urea should not be less than 3-4 cm.

Foliar feeding of plants with urea is carried out in the morning or evening hours. Spraying of fruit trees and shrubs is carried out directly in the near-trunk circle.

Carbamide: price

The cost of urea depends on many factors. In some regions it may be more, in some - less. The price is also highly dependent on the season. In the midst of country work, urea, of course, will be more expensive.

This fertilizer is usually sold in sealed plastic bags or bags. Packing can be very different. In addition, the cost of fertilizer depends on the supplier. In general, you can buy both expensive and cheap urea. The price for this top dressing is at least 16 rubles / kg, maximum - 40 rubles / kg. Of course, it is worth looking for cheaper fertilizer. It is best to purchase it in a large container in winter.

Urea for spraying against pests

Thus, carbamide (urea) is usually only used to protect fruit trees and shrubs. Processing is carried out twice during the warm period - in early spring, before bud break, and in autumn.

In this case, special kits are used. Carbamide for spraying against pests is sold not in bags or bags, as usual, but in boxes. One pack contains 10 liters of water. The kit includes 700 g of urea and 50 g of copper sulfate. Of course, if you wish, you can purchase these components separately and mix in the same proportions.

Many summer residents prefer carbamide even to the very popular and well-known Bordeaux liquid. The thing is that urea not only contributes to the destruction of harmful insects and fungi, but also feeds trees and shrubs at the same time. In addition, spraying with carbamide allows you to delay flowering. This is useful in the sense that frosts very often occur in early spring in central Russia. With later flowering, therefore, a better harvest can be obtained.

How to spray

Before treatment for pests or infections, trees and shrubs should be carefully prepared. Frozen or damaged branches must be removed, the trunks should be whitened, and the trunks should be dug up. Spray on a sunny day. In hot weather, the procedure should be carried out in the morning or evening.

The first treatment is performed before bud break, the second - during the flowering period, the third - after the fruit set. If it rains immediately after spraying, the operation should be repeated. Processing is carried out using a special sprayer. During the procedure, be sure to wear goggles and gloves.

As you can see, carbamide (urea) fertilizer is very useful and also easy to use. Spraying or root dressing with its use is quite simple. The main thing is to observe dosages and terms. This will allow you to get the maximum effect at a minimum cost.

How pleasant it is to look at fruit-bearing garden plots or vegetable gardens. But this is already the result, and how much work, experiences and investments are hidden from admiring eyes! Care, watering, fertilizer ... Let's talk about the latter, let's take a closer look at top dressing with urea.

1 Carbamide - heavy chemistry for good

It is very important for any plants to have nitrogen in the "menu". It is thanks to him that they are poured, ripen, give a rich and healthy harvest. A highly effective nitrogen representative, beloved by many gardeners, is urea, or, in other words, urea. Outwardly, it is a granular fertilizer of white or off-white color, odorless. It dissolves well in water, is very concentrated and consists of almost 50% nitrogen.

There are different opinions of scientists about the advisability of using carbamide, there are even opponents. Nevertheless, the results showed that plants fed with this fertilizer grow healthy, strong and abundantly fruiting. Plus, urea is a very inexpensive drug that any summer resident can afford.
Many gardeners are wondering if it is really necessary to use this fertilizer? There are a number of visible signs by which you can determine if plants have nitrogen starvation:

• very slow growth;
• a change in the color of the tops or leaves (turn pale, turn yellow, become stained) or even begin to fall off;
• trees or shrubs have weak shoots;
• the ovary is small or very weak, the same with flower buds in fruit-bearing trees.

2 Foliar feeding - when and how to fertilize the leaves?

They resort to urea as needed, spraying will not hurt when the leaves fall and turn yellow, the ovaries die, etc. To do this, we dilute 50 grams of fertilizer per 10 liters of water. The best time for this procedure is morning and evening. Apply the carbamide dissolved in water with a sprayer to the leaves. Don't worry, the leaves themselves won't be harmed. In early spring, another spraying session will be required to protect the garden from pests. For such purposes, carbamide is combined with copper sulphate.

Sometimes you can meet with the irrational use of urea. Some summer residents simply scatter it on the snow or on a rainy day. They believe that in this way the fertilizer is more efficient and penetrates the soil faster. This is a categorically wrong opinion about. Precipitation washes it away and useful substances will not reach their destination - deep layers of soil.

Of course, all the most nutritious and important elements for life are obtained from the soil. But under certain unfavorable conditions, they become insufficient for good growth and fruiting. For example, at low temperatures or drought. In such cases, farmers recommend using urea. Despite the high efficiency and good yields after such treatment, we note that this is a minor type of plant nutrition.

The meaning of foliar feeding is that leaves are processed with fertilizer dissolved in water. Most often this is done with a sprayer. Nutrients surprisingly quickly penetrate through the foliage, begin to move through all the aortas of plants, supplying much-needed nitrogen there. It has been proven that foliar feeding of vegetables, trees and grains can increase yields by almost 40%.

3 We fertilize the garden and vegetable garden with urea

For vegetable crops

Urea must be used carefully, and not according to the principle "the more the better." Do not forget that this is a chemical preparation. All vegetable crops, without exception, need nitrogen, but the application for each of them is individual. Foliar top dressing with carbamide is very important for cucumbers, they are quite whimsical. Feed the soil before planting according to the instructions on the package. When the first ovaries appear, be sure to spray with urea to speed up fruiting. If you are growing cucumbers in a greenhouse, they also need top dressing starting from the fifth week and at least twice a month.

But tomatoes require different care. Applying urea before planting is not recommended. It is better to use it for foliar feeding by spraying at the initial stage of leaf formation, and later - ovaries. Zucchini, on the other hand, will be enough to spray twice with a liquid solution of urea during fruit set with an interval of 10 days. And it is better to nourish beets with nitrogen (1 tablespoon of urea) in combination with potassium chloride (15 g) and boric acid (5 g).

For garden plants

The garden is a place of special concern for every summer resident or owner of a country house. As mentioned above, it is better to start foliar feeding of garden trees with urea before the buds open on them. You will protect the surface of plants from pests and provide them with the necessary dose of nutrition. Later, fertilizer is applied when the shoots are growing. The third time - when the tree is already bearing fruit. You need to prepare the solution according to the instructions, only the numbers are given there and garden scales are not always at hand. But you can calculate the amount of carbamide, knowing that 10 g is 1 tbsp. spoon, 13 g of fertilizer - a full matchbox, and in a standard 200-gram glass about 130 g of urea.

In order to determine if the solution is too strong, first spray the bottom 2-3 leaves. Watch this place for some time, nothing should happen to it.

For grain crops

This fertilizer is very valuable for obtaining a good grain crop. It is also used as rice, barley, buckwheat and others. Due to the timely application of nitrogen fertilizer, the finished grain has a high protein content, which significantly increases its nutritional value. Often grain fields are sprayed with a solution of urea, sometimes it is applied in solid form. He also proved himself excellently when growing potatoes and sugar beets in large areas (fields). Accordingly, the application rate is measured in volumes of hundreds of kilograms. To fertilize wheat, rye and oats, 150 kg of fertilizer is bred per 1 ha of sown area, sunflower requires 120 kg per 1 ha, and corn - 160 kg per 1 ha.

4 How will flowers and pests react to urea?

As soon as warm days are established, garden pests come to life in their slits-minks - weevils, aphids, suckers and others. It is important for gardeners not to miss the time and start spraying trees with urea before they wake up. This must be done year after year.

The concentration of the solution is 500 g of urea per 10 liters of water.

There is no time to relax in autumn either. It is worth taking measures to protect your trees and shrubs from possible diseases. Spraying fertilizer on trunks, branches and leaves is carried out with a solution of the same concentration. You can cultivate the land near a tree, but with a much more liquid solution. The procedure is performed in late autumn, until the temperature drops below +10 degrees and when the foliage has already fallen. Otherwise, you can burn her. By the way, for the destruction of pests on vegetable crops, it is better not to use urea for the same reason - there is a possibility of burning the sheets.

Homestead owners often ask if carbamide is suitable for. Undoubtedly! Both garden flowers and indoor plants will benefit from this fertilizer. For example, the rose queen likes to get nitrogen during a profuse bloom, so urea can be applied every two weeks as a weak spray solution. Carnations need to start feeding a month and a half after planting every seven days. Perennials can be sprayed with urea once a month. Even an ordinary lawn will delight with its bright greenery if you start spraying this fertilizer on it. The main thing is not to harm, so read the instructions on the package.

Many gardeners, gardeners and flower growers today can no longer imagine how they can do without fertilizers. Thanks to complex top dressing, growth stimulants, crops grow faster, form beautiful, lush foliage, a strong root system, and are less susceptible to diseases. In this matter, the main thing is not to overdo it and know exactly which fertilizers are suitable for whom, so that there are no unpleasant surprises later.

What is urea?

As a fertilizer, carbamide is widely used to activate growth, obtain abundant yields, and maintain plants in a presentable condition. Nitrogen is essential for both vegetable and ornamental crops. It is present in protein and promotes rapid growth. With a lack of nitrogen, plants give few shoots, branches and leaves become thin, small, light green or yellowish in color. Flower buds can fall off, fruits are not tied.

What is urea? As a fertilizer, it is used for private use. Carbamide is very concentrated, it contains about 45% nitrogen. It can be called a universal fertilizer suitable for all types of plants. In appearance, these are transparent or white granular balls, perfectly soluble in water and odorless. Urea may increase hygroscopicity at high humidity. Urea (fertilizer) is used as top dressing for agricultural plants in neutral soils.

Instructions for use

Carbamide can be used on all even waterlogged ones, because it is perfectly fixed by the soil and is not washed out by precipitation as, for example, Urea is used both as top dressing and as the main fertilizer. For vegetable crops, it is possible to apply urea before planting, as well as top dressing during the growing season at a dose of 5-10 g per 1 m 2. Before flowering, it is necessary to pour a solution of 50 g per 10 liters of water, its approximate consumption is 3 l / 100 m 2. For ornamental and fruit bushes and trees, it is possible to fertilize with urea immediately after flowering and again about a month later with a solution of 30 g / 10 l of water.

How to use urea

Each fertilizer has its own characteristics that must be considered before using it for its intended purpose. Ammonium carbonate decomposes very quickly in air, which means that the surface application of urea is ineffective. This is money thrown to the wind, because the plant will not receive the substances it needs. Agricultural technicians recommend using carbamide in protected ground conditions. After fertilization, it must be immediately incorporated into the soil, this is the only way to prevent the loss of gaseous ammonia. You need to know what urea is, as a fertilizer, it is quickly washed out by precipitation, so it is most effective to apply it under the root of the plant in the form of a solution.

Protection of bushes and trees

Carbamide is used not only as a top dressing, but also as a pest control. As soon as warm spring days come, you should immediately apply a solution of urea to combat such wintering insects as weevils, aphids, suckers, etc. This procedure must be done before the buds swell. Preparing a pest control agent is very simple, for this you should dilute 0.5 liters of a concentrated solution of the drug in 10 liters of water.

Urea also protects plants from purple spotting and scab, while spraying is carried out in the fall, when the leaves are just beginning to fall. You need to process all the foliage - both the fallen and the one that remained on the bushes and trees. The solution is prepared the same as for the destruction of pests.

Fertilizing indoor plants

Absolutely all plants need to be fed, but you need to think carefully before using an additive such as urea (fertilizer) for domestic green pets. The use of nitrogen for indoor plants is necessary because it allows you to create a lush crown, accelerate growth, and prevent yellowing and leaf fall. Carbamide is very concentrated, so it should be used with great care. If you miscalculate with the dosage, then you can lose your pet or spoil his appearance.

You need to understand what urea is. As a fertilizer, it is suitable for creating lush, juicy foliage. And for flowering plants, nitrogen is not so useful, since its excess slows down the process of bud formation. Bulbous (hyacinths, hippeastrums), woody (oranges, ficuses, lemons), rhizomatous (irises, calla lilies) from the first days of life need nitrogen supplements, so they can be fertilized with carbamide without any fear. But tuberous (caladium, gloriosa) need to be fed after the appearance of the first leaves. Urea is used as a solution. The product is prepared at the rate of 20 g per 10 liters of water, it is enough for 10 m 2.

Fertilizers for vegetable and fruit crops

Urea is suitable for fertilizing almost all types of plants, it is especially effective during the period of vegetative growth. However, it should be remembered that for different crops, concentrated fertilizer, such as urea, is needed to varying degrees. Application for garlic, onions, cabbage, potatoes, peppers and tomatoes is possible at a concentration of about 20 g of urea per m 2 . Under peas and cucumbers, fertilizer is applied at the rate of 7 g / m 2.

Tomatoes, strawberries, cabbage and cucumbers can be periodically fed with a solution of 25 g / l, and with a halved concentration of carbamide, before bud break, gooseberries, currants and other fruit and berry bushes should be watered. Urea contributes to the formation of a beautiful crown, so it is recommended to apply it under apple trees (230-250 g), plums and cherries (110-150 g). Carbamide can be scattered over the hole, and then it is good to fill it with water. Top dressing with a solution is also allowed, but watering cannot be ruled out.

If we compare urea with others, for example, then it wins in many ways: it accelerates growth as much as possible, is suitable for, and at normal concentration does not burn the leaves at all. Proper use of carbamide not only improves the appearance of plants, but also contributes to a rich harvest.

Both experienced farmers and beginners know about such a fertilizer as urea. But why does urea, or carbamide, work better in some areas, and worse in others? At what stage of plant growth is it best to use urea? How? From the review, you will learn all the subtleties of fertilizing the garden and greenhouse with nitrogenous fertilizer. And from the video instructions you will get the information necessary for every practicing gardener.

Signs of a nitrogen deficiency

The second half of spring is the time of love. I mean, it's time to take care of your favorite and easily vulnerable flower and vegetable sprouts. Even if your seedlings were strong at the germination stage, in the soil under the open sky they are subject to the influence of various factors. If there is not enough nitrogen in the soil, then you will quickly see this in the plant.
Visual signs of nitrogen deficiency:

• too slow growth;
• weak, thin shoots;
• leaves rapidly lose their green color, become pale green or yellow;
• the kidneys are smaller than they should be, they are weak or underdeveloped;
• shoot growth slows down.

The lack of nitrogen is clearly visible on cucumbers. The fruits become light green. The lower leaves turn yellow. The upper part of the cucumber, where the flower was, becomes thin and sharp.

The lack of nitrogen is clearly visible on cucumbers - the leaves turn yellow and dry

Attention! With an excess of nitrogen, it can be converted to nitrates.

Carbamide - an ambulance with a lack of nitrogen

Whether you have noticed obvious signs of nitrogen starvation, or just want to carry out prevention, urea will come in handy in any case. It is produced in the form of small white granules or in tablet form. Urea is produced at Russian enterprises and sold at an affordable price. Therefore, the price-quality-efficiency ratio attracts thousands of growers.

Urea is produced in the form of white granules with the name "Urea"

Attention! Urea must be carefully protected from moisture, stored in a tightly closed container.

Urea is an organic compound obtained chemically from an inorganic substance. In the formula of urea - 46% nitrogen, it is the most concentrated of fertilizers with nitrogen.

What is more effective, sprinkle or bury fertilizer?

As soon as urea is applied to the site, nitrogen in the amide form is converted by bacteria in the ground to ammonia, and then to the nitrate form. This feature of nitrogenous fertilizer brings inexperienced gardeners. Some sources say that white granules can be sprinkled on the ground around the roots of vegetables, berry bushes or trees. And someone advises pouring fertilizer directly on the snow in early spring, so that nitrogen is absorbed into the soil when it melts. But with such top dressing, urea will partially turn into ammonia and evaporate without having time to enrich the soil.

Urea granules can be sprinkled next to the roots of the plant before watering or dug into the soil

Advice. Tablets or granules of urea in dry form should be dug into the ground to a shallow depth and lightly sprinkled with earth. Only in this case the necessary reaction will occur, and the seedling will begin to grow rapidly, bloom and bear fruit. If you have diluted urea with water, it is better to slightly dig the ground around the root, pour fertilizer and pour dry soil with a rake.

When used correctly, urea fully satisfies the need of the sprout for nitrogen.

Benefits of using urea:

1. It is applied both on open ground and in the conditions of greenhouses.
2. Plants perfectly absorb nitrogen from urea.
3. You can carry out not only root, but also leaf top dressing. The fertilizer solution does not burn the leaves like ammonium nitrate.
4. Granules and tablets acidify the soil, but not as much as other fertilizers with a high nitrogen content.
5. Urea increases productivity, can be used for vegetables, trees, and berry bushes.
6. Helps in pest control. If it is known that last year the tree suffered from pests, then even before the buds appear, it can be treated with a solution of urea. Or do the same in the fall, when the leaves fall from the fruit trees.
7. Protects against diseases such as monilial burn, purple spotting, scab.

Urea can be used as a pest control solution for trees.

Cons of using urea

1. If there are not enough enzymes in the soil, the fertilizer may not work.
2. Urea acidifies the soil, so it is recommended to apply it at the same time as limestone. For 0.5 kg. fertilizers - 0.4 kg. chalk.
3. A high concentration of urea near the seeds slows down seedlings. This effect can be neutralized by simply using potash fertilizers with urea.
4. Must be used wisely. Too much nitrogen in the earth is just as bad as too little. In this case, the sprouts will give abundant greenery, but the fruit may not start.

Optimal timing for the introduction of urea

Attention! If you came to the store for urea, and do not know how much you need to buy, count the number of grams. according to an example formula. To prepare the land for sowing, you will need 20-30 grams, that is, 1 tbsp. spoon per 1 m². To irrigate already grown plants with urea per 1 m², you will need 1 tbsp. dissolve a spoon in a bucket of water.

Carbamide - instructions for use

Usually urea is applied in the following periods:

• soil preparation before sowing in a greenhouse or in an open area. If in dry soil, then 3-4 cm. If in moist soil, or before watering, then it can be not so deep;
• when sowing, but not close to the seed! Check that the fertilizer is separated from the seeds by a layer of earth;
• top dressing during the vegetative period;
• foliar feeding before fruits should be set.

The use of urea for vegetables, berries and fruits

Tip: Didn't take the scales to the dacha? Then you can't do without a hint. 10 gr. urea is 1 tbsp. 13 gr. - a matchbox, and 130 gr. fits in a regular 200-gram glass.

For feeding vegetables and berries, urea is used in the following proportions:

• in the spring, before planting, undissolved granules are buried in the area at the rate of 5 to 11 g / m²;
• during the development of potatoes, cabbage, beets, garlic, peppers and tomatoes from 19 to 23 g / m²;
• cucumbers and peas calmly perceive from 6 to 9 g / m²;
• eggplant, zucchini and squash require 10 to 12 g / m²;
• when strawberries have ovaries, they can be fed with a solution of urea at the rate of 10 g. for 2 l. water;
• for cereals, it is recommended to use 300 gr. granular agent per 1 weave;
• when protecting against pests and diseases - from 9 to 15 gr. for 10 l. water.

When planting potatoes, fertilizer is poured next to the tubers and sprinkled with earth.

The use of urea for fruit trees and berry bushes:

• before planting a young tree, it is recommended to lower urea into the hole at the rate of 15-20 g / m²;
• apple tree loves 200 gr. fertilizer, diluted in 10 liters. water;
• cherry, irga, chokeberry and plum do not need so much. They need 120 gr. for 10 l.

The use of urea for flowers

Roses and other fragrant and fragrant flowers growing outdoors prefer urea in the form of a solution of 3-4 g/m². Fertilizer improves the development of flowers, does not allow the ovaries to crumble. But it is recommended to use it only during the growth period, since the active growth of leaves can adversely affect budding.

The benefits of using urea are obvious. With this fertilizer, your favorite crops are rapidly developing and bring a chic harvest. Moreover, urea acts against pests and diseases. However, urea is not so easy to use, and in order not to harm your green pets, it is advisable to use all the recommendations above.

The use of urea: video

Spraying garden trees with urea is cyclical. The dates of its holding change annually, which can only be calculated using the lunar calendar. The lunar month lasts 30 days and consists of phases. Phases 1 and 2 - new moon and waxing moon. At this time, the power of the trees is in the ground part. 3 and 4 phases - full moon and waning moon. All power is in the root part. The change in the phases of the moon is very easy to trace on any wall calendar, in newspapers and on the Internet. It is recommended to get rid of pests without damage to trees only during the 2nd and 4th phases of the moon. The calculation and objectives of spraying by months and seasons are divided into cycles.

Urea (or carbamide) is the fertilizer containing the largest amount of nitrogen (46%) of all currently existing fertilizers. Outwardly, it is a gray, white or yellowish granules. Used in dissolved form. The concentration of urea in the solution depends on the purpose for which the solution will be used. So, how to prepare a solution of urea for different cycles of processing garden trees from insect pests? For treatment in the first cycle, a 5-7% solution is used: dilute 500-700 g of urea in 10 liters of water. It should be noted that spraying is carried out before the buds swell. For the treatment of trees in the II cycle, a 0.2-0.5% solution is used: dilute 20-50 g of urea in 10 liters of water.

The solution for treating trees in the III cycle is prepared as follows: pour 300 g of ash with six liters of hot (50-70 ºC) water and leave to infuse for 24 hours, then drain the liquid from the sediment, add 16-20 g of urea and, stirring, bring solution volume up to 10 l. For processing in the IV cycle, a 7% solution is prepared: 700 g of urea is diluted in 10 liters of water. Fallen leaves are sprayed with a 10% solution: dissolve 1000 g of urea in 10 liters of water. In addition to removing insects, the treatment allows you to saturate the trees with nitrogen, which speeds up the process of swelling and budding, fruit ripening. The consumption of the solution depends on the age of the tree. If the age is up to 2 years, then 0.5 liters will be required, from 2 to 5 years - 3 liters of solution, over 5 years - 5.5 liters. Spraying is carried out early in the morning after the dew has disappeared or in the evening before it falls.

Before spraying, you need to make sure that according to the weather forecast, heavy precipitation is not expected in the next day or two, otherwise the treatment will not be effective. For safety, the treatment is carried out in dry and calm weather, using personal protective equipment against chemicals: rubberized gloves, a protective multilayer bandage that covers the nose and mouth, glasses. Clothing should cover the entire body of the gardener. For high-quality and fast processing, trees must be inspected in advance. If moss or lichen is found, cleaning should be done with a metal brush. For the convenience of processing the upper part of the crown and the middle, you need a garden ladder.

Processing is carried out using a pneumatic or pump-action sprayer. When purchasing a sprayer, you need to pay attention to its volume and ease of use. It is desirable that the volume be no more than 10 liters, otherwise it will be difficult to carry it, and the fasteners of the cylinder were like those of a satchel (this frees up your hands). The uniform urea solution for spraying is poured into the spray bottle for spraying. The spray mode is set to fine (in the form of dew). Tree processing occurs from top to bottom. The crown, trunk and branches of a garden tree are carefully processed. It is necessary to avoid getting the solution on the beds with vegetables, as they can be burned with the solution, ruining the crop.

The urea solution is periodically shaken for uniform processing. Spraying is carried out immediately on the entire garden plot in order to avoid the transfer of pests to neighboring garden trees. For spraying efficiency, the sprayer tip must be at least 0.7-0.8 m from the treated surface. The solution must necessarily fall not only on the outer, but also on the inner side of the leaves. At the end of the treatment, wash your hands and face thoroughly with soap. It is preferable to send clothes to the laundry. Upon completion of work, the sprayer must be disassembled, washed, dried, and only after that all the parts must be reconnected: a hose, a tip and a bottle for solutions in order to prepare for further operation.