Gardeners very often feed more plants to produce more crops. To this end, you can use chemicals, but then, all the nitrates are then in the fruit. It is safer, but no less effective, to use more natural fertilizers, for example urea or carbamide .
In this article, you will learn about the composition of urea, and for which plants its application as fertilizer is effective.
What does fertilizer urea consist of?
Urea is the most concentrated nitrogen fertilizer. The proportion of this chemical element is about 46% and it is in the amide form, which is absorbed faster in the plants and wanders through the layered surface.
The principle of urea
After getting this fertilizer into the soil, under the action of enzymes, which are produced by bacteria living in the earth, urea turns into ammonium carbonate. In areas where there is a high biological activity, this process of transformation takes only 2-3 days.
Urea is sold as water-soluble white granules that cake after time runs out. It can be applied directly to the soil or as a solution.
How to breed fertilizer urea?
Urea can be used for various kinds of feeding, only the proportions of dilution of a dry preparation in 10 liters of water will differ:
- for the root - 50-70 g;
- for foliar plant - 100 g.
But for vegetable crops, fruit trees and bushes, different rates of application of this fertilizer in dry form are defined.
How to use urea as a fertilizer?
The general recommendations for the use of urea for vegetable crops are the following dosages (based on 1 m2 of land):
- before planting - up to 12 g;
- in the period of active growth - up to 10 g;
- before flowering - in the form of a solution, prepared in proportions of 50-60 g per 10 liters of water.
For trees and shrubs, both ornamental and fruit-berry:
- in the period of growth - 15-20 g;
- after flowering (after 5-6 days) and after 30 days - with a solution of 20-30 g per 10 liters of water.
Do not forget that the feeding of raspberries, tomatoes with this fertilizer will only benefit.
If you bring urea, scattering it under the plants or sealing into the hole when planting with them, be sure to pour well afterwards.
What should I look for when using urea?
If you want the use of urea to have the maximum effect, the following should be considered:
- This fertilizer is not recommended to be mixed with lime, chalk, dolomite and simple superphosphates, since at this connection their action is neutralized, so there will be no effect.
- During its use, soil acidification occurs, therefore, in order to avoid such a negative effect of the fertilizer, concomitant with it, limestone should be added at a rate of 1 kg of urea to 800 g of crushed limestone.
- Ammonium carbonate, obtained as a result of the decomposition of urea, when decomposed with oxygen decomposes, and that part that becomes gaseous, is simply lost, which reduces the level of efficiency of use. This occurs when urea is introduced into the open ground without being embedded in the soil. It should also be taken into account that on alkaline and neutral soils the loss of an important chemical element is much higher than on the rest;
- Due to the fact that urea is better than other nitrogen fertilizers in the soil and is slowly washed away from it by precipitation, it is recommended to use it in those areas where irrigation is used or excessive moisture is observed.