How and when to treat a garden with urea

What is urea?

The substance is small, white, odorless granules. This is a nitrogen fertilizer and is produced by synthesis. Unlike other fertilizers, for example, saltpeter, urea does not cause burns on the plant mass, is safe for plants, promotes their good growth and improved productivity. Urea contains nitrogen, it makes up about 50% of the substance.

Urea dissolves well and quickly, decomposes in the soil for a long time, and is suitable for use in any type of soil, including light and slightly acidic. Another advantage of using urea for gardening is its low price. That is why most summer residents prefer this fertilizer.

When working with urea, keep the following in mind:

1. Urea belongs to organic compounds, but is considered a mineral nitrogen-containing fertilizer.
2. The effect of urea begins immediately and has a long period.
3. Urea for gardening as a fertilizer is applied directly to the soil, since it has the ability to weather.
4. It is used in any soil, including in protected conditions (in greenhouses and hotbeds).
5. Shows good effectiveness on waterlogged soils.
6. In soils with high biological activity, urea loses less nitrogen, which cannot be said about alkaline and neutral soils.
7. Once in the soil, urea is converted into ammonium carbonate (ammonium carbonate).
8. It is the most effective and safe nitrogenous fertilizer for garden plants in the summer - it does not burn the foliage even if the dosage is incorrect.
9. Another very useful property of urea is that it slows down the growing season - trees begin to flower later, and this helps to avoid the death of ovaries from spring frosts. This is especially effective for early ripening varieties of peaches, plums, and apricots.
10. During the period when buds are forming on the trees, treatment with urea solves the problem with many pests and various diseases.
11. Spring treatment of the garden with urea helps protect trees from frost.
12. Urea is useless when dealing with old stumps; it is not capable of destroying them completely, but will only contribute to rotting.
13. Under no circumstances mix urea with other fertilizers and minerals - chalk, simple superphosphates, lime.

Why is the treatment carried out?

Treatment of the garden with urea in the fall is carried out for the following purposes:

• beneficial effects on different types of plant crops;
• increasing productivity;
• increasing the amount of protein in cereals;
• prevention of garden diseases;
• prevention and elimination of pests - aphids, copperheads, weevils and flower beetles;
• strengthens the immune system and increases resistance to temperature changes and precipitation;
• helps the plant to acclimatize faster after picking or transplanting.

Many gardeners recommend using urea for weakened and depressed plants: this promotes their rapid recovery, the result is noticeable within a few days.

On a note! Urea is suitable for almost any type of plant, but it is not recommended to use it during budding or flowering. This is due to the fact that fertilizing can inhibit further growth of the plant and reduce the amount of future harvest.

The use of urea promotes the formation of lush greenery, good flowering, healthy appearance and large flowers. It is recommended to use it when the plant looks depressed, is out of size, crumbles or turns yellow. It is recommended to treat trees or flowers in the fall after a cold or long winter.

How to spray trees with urea

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It is best to carry out autumn spraying with the onset of cold weather. Already after the first frost, at the end of autumn, you can start. I prepare urea with a 5% solution, which contains almost half nitrogen.

Spraying trees with urea in the fall helps to cope with many infectious and fungal diseases. It completely destroys them, but for prevention, spraying must be repeated in early spring.

I spray all the fruit trees, of which there are quite a few in my garden. These are apple trees, pears, plums, and cherries that need emergency help. At the same time, if the tree is not tall and young, I can almost completely bathe it in a urea solution using a shoulder sprayer. Then in the spring I don’t have to carry out the treatment.

If the tree is tall and mature, with a large spreading crown, then additional spring spraying is mandatory. I would advise spraying the ground around the trees in the fall with a higher concentration of urea. This will allow you to evenly moisten all fallen leaves, which are the main causative agent of various infectious diseases. Many people rake up the leaves, dry them and burn them. But this produces toxic, suffocating smoke, which is very harmful to health. In addition, the wind, while the leaves dry out, will spread half of them throughout the garden, spreading the infection throughout the entire area.

Sprayed leaves can be safely used in compost, and they can be partially covered with the ground around the trees, preserving and increasing its fertility.

Spraying trees with urea in the fall can replace treatment with Bordeaux mixture. This is an excellent product that is completely harmless to the environment. But no matter how good it is, it cannot replace the treatment of trees in summer and spring with fungicides, which is carried out for preventive purposes in order to keep the garden always healthy and fruitful. Therefore, in the spring I spray the garden, first during budding, then during flowering.

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When the flowers have set, you can spray a third time. These events save the garden from pests, which, as soon as the sun warms up, rush to the trees. Among them are hatched larvae of silkworms, pear psyllids, sawflies, and various larch caterpillars. They can be successfully combated using traditional methods, a solution of slaked lime or colloidal sulfur.

Pros and cons of the method

Urea today is one of the most popular fertilizers among gardeners and gardeners. The advantages of its use include several characteristic features:

• a solution prepared on its basis tends to be quickly absorbed by plant crops;
• feeding it is safe, no burns appear on the leaf blades of the plants;
• after application, within 48 hours, the amount of nitrogen in plants increases several times, accordingly, the fertilizer begins to have a beneficial effect on its development;
• Spring or autumn spraying reduces the likelihood of flowers falling off, which usually occurs after frost.

A solution prepared on the basis of urea can be called universal. It not only has a beneficial effect on the development of various plants, but also helps fight pests and pathogens. As for the disadvantages of its use, these include the following points:

• if the concentration in the composition is even slightly exceeded, the seeds will not sprout;
• if the solution is prepared incorrectly or introduced into the soil, ammonia begins to be released in a gaseous state, it can cause burns on young shoots, which will lead to their death;
• urea cannot be used simultaneously with other types of fertilizers.

The use of a fertilizer such as urea has many positive and negative aspects. In order for it to have an exceptionally beneficial effect on the plant, it must be used correctly.

Prevention and destruction of pests

How to prepare a garden for spraying with urea

A list of necessary measures that contribute to achieving the required effect. What needs to be done before the procedure for autumn treatment of the garden with urea:

• remove foliage that has formed after leaf fall . The leaves of fruit trees and shrubs are always replete with representatives of pathogenic microorganisms and insects. You cannot put such plant residues in a compost pit. They should be burned without regret to prevent infection of the entire garden;

• The soil under trees and shrubs must be thoroughly loosened and weeds removed. Phacelia green manure is used to control weeds in tree trunks. It will not only cope with this task, but will also increase soil fertility. In addition, a carpet of lilac shades under fruit crops will decorate the garden and attract bees for pollination. This technique will increase crop yields;
• carefully examine the stem part of the plant. Manually remove any pests found and damaged bark, especially in places where it has fallen away from the trunk. A huge number of insects accumulate here for the winter;
• carry out sanitary pruning. Trim broken and diseased branches. This type of pruning is recommended throughout the growing season.

Autumn nitrogen prevention. Features of the procedure

Autumn treatment of trees and shrubs with urea solution should be carried out according to the following rules:

Rules for autumn nitrogen prevention, features of the procedure

• Choose a time to work when the weather is good. Ideally, a sunny day without wind would be ideal. If it rains, the procedure should be repeated;

• For spraying, use a spray bottle. It can be purchased at the store. Some gardeners use a plastic bottle with a nozzle to spray liquid;
• strictly follow the recipe for preparing urea products. Violation of proportions can have a detrimental effect on plants;
• it must be processed in such a way as to wet both sides of the sheet plate;
• Treatment should not be carried out at ambient temperatures of -5°C or lower. The efficiency of processing in this case is reduced to zero.

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Duration of procedures

There is no exact time when a plant can be treated with urea. These deadlines are different in each region. Experienced gardeners and gardeners recommend doing this twice a year - in spring and autumn. You can apply the fertilizer solution for the first time immediately after the trees begin to bloom. The second time is when the leaves fall.

It is a mistake to treat with a urea solution immediately after thawing the soil: such plant care is ineffective. If for some reason this was not possible in the spring, you should definitely fertilize in the fall.

Rules for using fungicide for maximum effectiveness

You should not mix iron sulfate with lime, as gardeners often do with copper sulfate. The drug is incompatible with phosphorus-containing insecticides: Karbofos, Fufanon. You should adhere to some simple requirements when using the drug:

1. Use only in dry weather.
2. Calm weather is better.
3. Too bright sunlight weakens the beneficial properties of the drug. In addition, bright sunlight can cause burns to the treated areas.

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Features of autumn processing

Typically, this procedure is carried out before the leaves fall. For most regions, the optimal period is the second half of October - early November. It makes no sense to carry out earlier processing for two reasons:

• burns may appear on the leaves;
• The frost resistance of the plant crop will noticeably decrease.

It is also worth paying attention to the condition of the garden land. If there are signs of disease on it or there are pests, it is imperative to treat the trunks and fallen leaves.

On a note! If it is necessary to spray fruit trees with urea in the fall, it is important to evenly distribute the solution over the entire surface of the crown, and also over the area around the trunk. Thanks to this care, the tree will better withstand the cold and will be protected from infectious diseases.

How to treat your garden with insecticides in the fall

If your trees suffered from pests during the season, in the fall after leaf fall, spray them with approved broad-spectrum insecticides (Aliot, Aktara, Inta-Vir, Fufanon Nova, Iskra Zolotaya, Komandor, Alatar, Herold, etc.), diluting the drug according to the instructions .

During processing, the thermometer column should not yet drop to negative levels, because Most of these agents operate at temperatures not lower than 5°C.

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Preparation of urea for processing

The first thing to do is to correctly calculate the proportions:

• for any mature trees, including fruit trees - plums, apple trees, pears - you will need 500-700 g of fertilizer;
• for young trees 100-250 g is enough;
• bushes and shrubs – gooseberries, raspberries, currants – 30-40 g;
• cucumbers or peas – 5-8 g;
• zucchini or squash – 10-15 g;
• tomatoes or peppers – 15-20 g;
• potatoes – 20-25 g.

On average, 5 to 20 g of dry nitrogen fertilizer per 1 square meter is sufficient for vegetable crops. meter. The required amount of nitrogen fertilizer must be diluted in 10 liters (bucket) of water and mixed until the granules are completely dissolved. This solution is suitable for preparing a garden in the fall; it is used to spray dry branches or water the tree trunk before loosening.

Urea. Normal blood urea levels in women and men

Determining the amount of urea in the blood is a routine biochemical screening test.

Patient preparation:

No special preparation is required for this analysis - blood (a few milliliters) can be donated at any time of the day.

Normal levels of urea in blood serum

*- urease method (reaction with diacetyl monooxime)

** - it is generally accepted that the conditional norm of urea in the blood in women coincides with the norm of urea in the blood for men.

Interpretation of the results of a blood test for urea

An increase in urea in the blood in pregnant women may be a sign of preeclampsia nephropathy.

Why is blood urea elevated in older people?
Aging of the body often leads to a decrease in kidney function. An age-related decrease in GFR causes a moderate increase in urea in the blood of elderly patients.

What affects the biochemical blood test for urea?

Soil application technique

In order to add urea to the soil in the garden in the fall, you need to:

1. Choose the right time. Fertilizer can be applied to the soil strictly in the morning or evening. It is better to do this in dry and windless weather.
2. Loosen the soil.
3. Apply the solution at the root of a tree or bush.
4. Loosen the soil around the trunk again.

To apply urea for garden treatment in the fall, the recommended temperature is from +4 to +6°C. If it rains after applying the fertilizer, the procedure must be repeated, otherwise it will be ineffective. You can also apply fertilizer in dry form. But in this case, the granules should be covered with a layer of soil, since ammonia tends to evaporate in the open air.

Spraying trees

Spraying should cover the trunks and crowns of plants as much as possible. If they already show signs of disease, special attention is paid to the affected areas. Some gardeners rake and burn leaves. But you don’t have to remove it, but treat it thoroughly with urea. The drug destroys pests and infectious agents, promotes rapid decomposition of leaves. As a result, they turn into an excellent natural fertilizer for the garden.

When performing the procedure, it is important to adhere to several rules:

1. Spraying is carried out only after preliminary preparation has been completed: digging up the soil, removing affected branches, whitewashing.
2. A dry, sunny day with no wind is suitable for processing. If the weather is hot, you should start work early in the morning or after sunset.
3. The preparation and use of the solution is carried out only in protective gloves, glasses and clothing.
4. The most effective spraying is done using a special sprayer. This device allows you to process even the tallest plants.
5. When working, you should not spare the composition, since it will not cause any harm to trees and shrubs.
6. If precipitation occurs immediately after treatment, the procedure is repeated. Otherwise, the desired result will not be achieved.

Branches, trunks and soil are treated with urea. It is important to adhere to the recommended dosage. A high concentration of the solution burns the plants and provokes early leaf fall. As a result, trees will receive fewer nutrients and will be more susceptible to low temperatures.

Application to the soil

Urea is also suitable for caring for various ornamental and fruit trees and shrubs. This universal product is applied to the soil to feed and protect plants from parasites. Currently, urea is considered one of the most popular fertilizers. Urea is safe and highly effective, which explains the high demand from consumers. The cost of fertilizing is an order of magnitude higher compared to nitrogen-containing analogues. The fact is that urea is not a natural compound. It is extracted through a synthesis process from carbon dioxide and ammonia. Experts are confident that the price fully justifies the quality of the fertilizer.

Nitrogen starvation in plants is manifested by several pronounced signs:

1. slow growth of seedlings;
2. curling and yellowing of leaves;
3. weak flowering, lack of ovaries;
4. low yield, early fruit shedding.

Fertilizer is applied in the morning or evening, always on a dry day. If it is raining outside, it is worth rescheduling the work to another time. A solution is often used; for preparation it is necessary to dilute 30–40 g of urea in 10 liters of water.

Pest Elimination

Experienced gardeners know firsthand how dangerous pests can be for the garden. Because of them, the number of fruits decreases, diseases appear that can lead to the death of the plant. To avoid these unpleasant moments, you can treat the garden with urea.

Aphid

Urea today is one of the most effective remedies against aphids. To fight, you need to make a special solution in the proportion of 500-700 g of active substance per 10 liters of water. 2.5 liters of this substance is enough to treat an area of ​​1 m².

For prevention, it is recommended to treat the garden with iron sulfate and urea in the fall. To do this, dilute 500-700 g of urea in water, wait until the granules dissolve, and then add 50 g of vitriol. You can spray the crown of a tree, its trunk and fallen leaves with this solution against pests.

Rules for autumn spraying of the garden with nitrogen-containing fertilizer

The best time is late autumn. Urea, as a highly concentrated nitrogen-containing fertilizer, should be used in late autumn for the purpose of prevention and destruction of pests, i.e., when leaf fall is in the second stage or has already ended. The approximate month for this stage is the beginning or end of November, depending on the climatic latitude.

Earlier treatment of garden trees with urea in the fall can lead to tree burns and premature leaf loss, which will affect their vulnerability to frost and low supply of nutrients.

Dry, windless weather is a priority. A process such as spraying garden trees with nitrogen-containing urea requires both the absence of wind and dry weather. Firstly, this will provide maximum effect that will not be blown away by the wind or washed away by precipitation. Secondly, it is much safer for your health and, possibly, your yard animals, because the fertilizer contains pesticides.

Preparing trees for processing. This applies mainly to trees older than 6-10 years, and which have obvious bark diseases. Before processing them, you should remove diseased and affected areas of the bark using your hands or a metal brush or spatula. This will provide direct access to the affected area when spraying, as well as to the accumulation of insects.

As for foliage, even those affected by diseases, it is not recommended to remove it as unnecessary and is also subjected to treatment. In the spring, the treated foliage will become an excellent fertilizer, a kind of compost for trees.

Preparation of solution for spraying. The difference between urea, as a supplement and as a medicinal product, is in the composition of its solution. So, to destroy diseases and pests, prepare a very concentrated solution per 10 liters of water with at least 500 g of fertilizer, and preferably 500-700 g.

Scale of wood processing. The entire crown of the tree should be treated with urea in the fall, i.e. use fine spraying, which will eliminate existing problems as much as possible and prevent possible diseases.

It is also recommended to spray the tree trunk, especially if it is affected by diseases. It is also important to treat the already fallen leaves of the tree, on which infections and parasites can also live, and the soil adjacent to the tree.

Safety precautions. Take care of your health and use all the necessary protection for working with chemical fertilizers: a respiratory mask or thick gauze bandage, rubber gloves, safety glasses, etc. Wash your hands and face after finishing work, and also put your work clothes and shoes in the wash.

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Safety precautions

Urea is a highly concentrated chemical, so it is important to follow safety precautions when working with it:

• plants can only be sprayed using a special spray bottle;
• when working with fertilizer, you need to use protective gloves, goggles and a respirator;
• for processing, be sure to choose a calm and dry day;
• After spraying or applying fertilizer to the soil, you need to thoroughly wash your face and hands, and wash the clothes in which the treatment was carried out.

Neglecting safety precautions can lead to burns on the skin or mucous membrane, and poisoning can also occur.

Urea is one of the most effective and safe fertilizers suitable for garden treatment. It is inexpensive and easy to use. If used correctly, you can enhance plant growth, improve productivity, increase disease resistance, and also get rid of many diseases or pests. It is important to follow the dosage and safety measures.

Signs of Nitrogen Deficiency

A lack of nitrogen-containing compounds can be noticed during the growing season of vegetation. This will make it possible to adjust the macronutrient content in the autumn, which will ensure its sufficient quantity before the new season.

Nitrogen is responsible for increasing the green mass of the crop, the number of young shoots and stepsons. Additionally, it takes an active part in the processes of photosynthesis, which are activated at the beginning of plant growth and development.

Among the main signs of nitrogen deficiency in the soil

the following are distinguished:

• the culture develops slowly and produces few shoots;
• leaf plates acquire an unusual narrow, elongated shape and become smaller;
• the color of the green mass becomes lighter, often the leaves fall off prematurely;
• young shoots are thin and weak, have few leaves, weakly branch;
• The number of buds formed on the plant is significantly reduced, and unripe fruits fall off en masse.

An excess of nitrogen
is more dangerous
than its deficiency and is characterized by the following symptoms:

• in the early stages of growth, the plant’s development is greatly inhibited;
• adult crops actively increase green mass without forming a sufficient number of ovaries;
• the foliage takes on a rich dark green hue;
• the period of fruit ripening is postponed to a later date.

Precautionary measures

Urea is a rather aggressive substance (hazard class III) and requires compliance with safety measures when used. The treatment is carried out in calm weather in clothes with long sleeves. You should wear safety glasses and a gauze bandage (respirator) on your face, and put latex gloves on your hands.

Ignoring precautions can lead to poisoning with characteristic symptoms: nausea, vomiting, feeling of suffocation. In severe cases, immediate medical attention is required.

If the urea solution gets on the skin and mucous membranes, the areas of contamination are washed under running water. If the substance is accidentally swallowed, rinse your mouth with water, take 2-3 tablets of activated carbon and drink plenty of water. After treatment with urea, it is recommended to take a shower and put contaminated clothes in the wash.

The use of urea allows you to obtain strong and healthy currant bushes, reduce the likelihood of being affected by diseases and pests, and increase crop productivity. The drug requires strict adherence to dosage and precautions during the period of work. Violation of the instructions during processing can cause burns to plants and cause poisoning of people and animals.