Carbamide urea: use

Each gardener tries to improve the quality of his crop by applying various fertilizers. To date, the most common carbamide (urea), containing organic plant and nutrient soil additives, as well as rich in nitrogen.

A bit of history

The urea was first discovered in 1773 by the French scientist Hillaire Rouelle, but only in 1828 they began to synthesize it. Effective nitrogen fertilizer urea (urea) in its pure form contains up to 46% nitrogen, when dissolved in water it is pH-balanced and non-toxic to plants and soil.

Form of issue

Carbamide (urea) is available in various forms:

• In the form of small granules, slowly dissolving in the soil and protecting it from oversaturation with nitrogen. It is easy to mix this fertilizer with others, including organic ones.
• In the form of long soluble tablets, coated with a special coating, which prevents rapid dissolution in the soil, which protects the crop and soil from nitration.

Carbamide: application

Field experiments show that the use of urea as a pre-sowing fertilizer is permissible absolutely on all types of soils and under all sorts of agricultural crops. At the same time, the agent is not inferior to ammonium nitrate and ammonium sulphate, and sometimes, for example, on soddy-podzolic soils with sufficient moisture and irrigated sierozem, provides a richer crop of potatoes and vegetable crops. It is used both for top-dressing winter crops in early spring, and for tilled and vegetable crops with immediate seeding to prevent nitrogen losses due to the evaporation of ammonia produced by the decomposition of fertilizer. For non-root dressing of plants, it is recommended to use a crystalline version with a biuret content of up to 0.2-0.3%.

Benefits

This nitrogen fertilizer has advantages over other fertilizers. Carbamide (urea) is well absorbed by cultures, and at high concentration (1% solution) does not kill the plant and does not burn its leaves. When decomposed, it is absorbed by the cells of the leaves as whole molecules, and can also be assimilated by decomposition under the action of the enzyme urease with the formation of ammonia or diamino acids in the cycle of the transformation of nitrogenous substances. However, the excess of free ammonia in the root zone slows germination and emergence of sprouts, therefore it is necessary to be extremely rational when introducing carbamide into the soil during sowing, or evenly distribute it.

Recommendations

Before adding urea to the soil, it is recommended to mix it thoroughly with other additives or with dry sand. When used correctly, granular urea (carbamide) is an excellent nitrogen fertilizer. All this is due to the good physical properties, as well as the high content of nitrogen in its composition. Since its application is possible on any soils, and it favorably affects the yield increase, the need for this universal fertilizer grows with each season, and as a result, its production increases.