Urea as a fertilizer for the garden: dosage, scheme and features of application


The use of urea in the garden as a fertilizer is in demand, if necessary, to improve the soil characteristics of any type of soil, as well as as fertilizing garden trees, berry plantations or garden plants. To get the maximum effect, the instructions must be followed, both in terms of time and in the dose of urea.

Urea: appearance and chemical composition

Urea or urea is a chemical compound, the end product of protein metabolism and the most concentrated of all nitrogen fertilizers known to date. The release form is granular, which provides the fertilizer with excellent physical characteristics, as well as prevents caking and allows the urea to maintain good dispersibility.

This type of fertilizer is used to feed any agricultural and garden crops in the form of a solution, as it is also in demand as a root and foliar top dressing. Urea is actively used as a component in the production of complex fertilizers, and is also included in many slow-acting nitrogen-containing fertilizers.

In its pure form, urea is a colorless crystalline substance, odorless and with the following characteristics:

  • indicators of solubility in an aqueous medium depend on the temperature regime of the liquid and can vary between 50-95 g;
  • the substance is soluble in environments such as methanol, ethanol, isopropanol and others;
  • characterized by the ability to form compounds with the inclusion of inorganics and organic substances.

The colorless granules of the fertilizer represented by urea have sizes in the range of 1-4 mm, and the mass fraction of nitrogen is 46.2%.

Urea properties

Instructions for the use of urea in the garden as a fertilizer

Highly water soluble ureawhen applied to the soil has the effect of weak acidification of the soil, therefore, liming is performed if necessary.

Culture

Interval in weeks

Total Feeding

First application after planting or sowing

Norm per hundred

Norm per sq.m.

Eggplant

2-3

Four times

3-4 weeks

0.5 kg

10-12 g

Tomatoes

2

At least three times

14 days

0.22 kg

19-23 g

Bell pepper

4

Twice

3-4 weeks

0.22 kg

19-23 g

Zucchini and squash

3-4

Twice

3-4 weeks

0.5 kg

10-12 g

Carrot

-

Once

14 days

0.5 kg

10-12 g

Celery

-

Once

Three weeks

0.7 kg

12-14 g

Salad crops

3

A couple of times

Three weeks

0.6 kg

12 g

Bow

3

A couple of times

Three weeks

0.5 kg

10-12 g

Spinach

-

Once

14 days

0.7 kg

12-14 g

Gourds

3-4

Four times

Month

0.5 kg

10-12 g

Cucumber

2-3

Four times

Three weeks

0.3 kg

6-9 g

Peas and beans

2-3

Four times

14 days

0.3 kg

6-9 g

Potatoes

14 days

A couple of times

Three weeks

1 kg

23-25 โ€‹โ€‹g

The introduction of urea into the soil must be carried out in advance, in the early spring or under the implementation of autumn plowing. It is allowed to use amide substances in the form of aqueous solutions during irrigation, or in the process of direct mixing with the soil when loosening.

Foliar top dressing of garden plants is indicated for any vegetable crops with severe nitrogen starvation, as well as if mass shedding of ovaries is observed. In this case spraying the green mass with a properly prepared urea solution is especially effective and gives the fastest positive results. To prepare such a solution for foliar nutrition of plants, it is necessary to dissolve 5-10 g in a liter of water at room temperature. Such a quantity is enough for the processing of 20 square meters of ridges. Such an event should be performed only in the morning or evening, after sunset.

Features and options for the use of urea in the garden

When using urea, it should be remembered that the application as granular fertilizer involves a shallow incorporation into the soil, which will prevent the urea from being washed out of the soil during rains or irrigation.

Spraying trees with urea from pests

In addition to good results when feeding garden plants and berry bushes, granular water-soluble fertilizer urea allows you to very effectively deal with many plant parasites, and also significantly increases the resistance of plants to damage by the most common diseases.

It is important to note that this method of protection is strictly prohibited for use on vegetable crops, and neglect of the rule causes the death of the aerial parts of garden plants.

To process the crown of fruit stands, it is recommended to use a solution based on a bucket of warm water, in which 0.5 kg of fertilizer must be diluted. With this amount of funds, about ten square meters of garden plantations and berry bushes can be processed. Spraying of trees and bushes is carried out in the fall, immediately after leaf fall. As a rule, it is enough to perform only one treatment to get rid of insects and pathogenic microflora.

Urea for trees: spraying

How and when to feed trees and shrubs with urea

If plants need not only effective protection, but also high-quality top dressing, then fertilizers are introduced into the trunk circle in compliance with the following standards:

  • young apple and pear - 0.15 kg;
  • fruiting apples and pears - 0.25 kg;
  • young cherries and plums, as well as other stone fruits - 75 g;
  • fruiting cherries and plums, as well as other stone fruit crops - 0.12-0.14 kg;
  • berry crops - 75 g.

Surface top dressing on near-stem circles is carried out by spraying the solution, after which the soil is treated with a rake. It is most effective to carry out such an event in the spring, as well as at the stage of active fruiting of garden plantations and berry bushes.

Advantages and disadvantages of urea as top dressing

Urea or urea, used as a top dressing, has a significant amount of positive properties, among which the most important are the following:

  • urea-based solution is quickly and efficiently absorbed by any crops that are highly sensitive to high pH values โ€‹โ€‹of the soil;
  • properly performed foliar dressings are not able to cause burns on leaf plates in plants;
  • Timely carried out, in compliance with the application standards, fertilizing with urea can significantly increase the yield of not only fruit and vegetable, but also garden and vegetable plants.

Urea is not without some drawbacks that must be taken into account in the process of feeding fruit, vegetable and green crops:

  • the increased concentration of urea in the soil very often becomes the main reason for the decrease in seed germination rates;
  • when storing fertilizers, certain rules must be followed that preserve the activity of the active substance;
  • urea should not be mixed with other compounds used to feed garden crops.

The principle of action of the active component is very simple. When it enters the ground, a reaction occurs with spermatic components and earth bacteria.

During the first couple of days, a rather violent chemical reaction is observed that converts the urea introduced into ammonium carbonate. Contact with air causes a gaseous state to transform into ammonia. It is for this reason that it is necessary to thoroughly close up the introduced substance into the upper soil layers. It should be remembered that when using such compositions on soils with a strong alkaline or simply neutral reaction, significant losses and a decrease in overall efficiency are very often observed.

Fertilizers for the garden: varieties

Urea is currently considered one of the best forms of nitrogen fertilizers suitable for both foliar and root top dressing of any garden plants and fruit and berry crops. Properly diluted and introduced in accordance with the instructions, the compositions do not burn the foliage of garden crops and are able to be absorbed as a whole, not decomposed molecule, which positively affects the qualitative and quantitative characteristics of the crop. When sod-podzolic soils are used on light in composition with sufficient moisture and good irrigation, the use of urea is more effective than the introduction of ammonium nitrate.



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