Today, many owners cannot do without a variety of fertilizers while growing vegetables, fruits and berries. For the harvest to be rich, it is necessary to use a variety of fertilizers, taking into account the type of soil and culture. What it is? This issue worries many people.
- What is urea?
- Why is urea needed?
- Features of use
What is urea?
Urea is also called urea. It is a fertilizer that contains nitrogen and is intended for foliar feeding. This agrochemical in its appearance resembles crystals, which can be white or transparent. Urea does not emit an odor.
Almost half of the urea is nitrogen, which proves that urea is the best nitrogen-containing fertilizer. The urea solution has a neutral environment, so it does not provoke burns on plant foliage. Nitrogen, which is part of the composition, penetrates into plant cells in a short period and provides them with nutrition.
Why is urea needed?
If you consider all existing fertilizers, you will notice that urea is often used by the owners. It is produced in granules that have a diameter of 2-3 mm. According to external data, it resembles saltpeter, so you need to be able to distinguish them from each other. If you initially wet your hands, and then grind one ball of this top dressing, then you will feel as if your fingers are soaped.
If the owner decides to use this agrochemical, he will need to embed it in the ground. The following properties and rules for the use of urea are distinguished:
- Due to the composition of the fertilizer, it is placed on the same level as sodium nitrate and ammonium sulfate. It is worth remembering that when urea is applied during sowing, care must be taken that it does not come into contact with the seed. This is due to the release of ammonium carbonate, which reduces the germination of seeds. To prevent this, it is worth using also potassium or embedding urea below the sowing.
- Urea is an acidic agrochemical. When it is absorbed in the soil, then alkalization occurs initially, so it is less effective on saline soil. After this, acidification of the soil occurs. In this case, there will be no trace of any compounds after these reactions.
There is a huge advantage of urea: it does not harm plant foliage. This is not the case for ammonium nitrate, which burns the ground portion when the planting is sprayed. Considering this, urea can be added fractionally. Experts advise using urea for common soils. It is on them that she maximally reveals her properties.
Video about what urea is:
This fertilizer boasts a very high hygroscopicity. For this reason, it is worth keeping it free of impurities in a dry place.
Features of use
If we compare urea with ammonium nitrate, then the maximum manifestation of its properties occurs if it is introduced into light soils. The main thing is that the soil is moist enough. Urea also shows itself well on gray soils. If this fertilizer is used on alkaline or neutral soil, then a large amount of nitrogen is lost. Therefore, in such cases, it is recommended to mix the urea with the soil.
Urea is used as the main top dressing in the spring. However, it is suitable for a variety of crops. Application to the soil should take place 7 days before the planned sowing. In this case, the fertilizer is deepened by 7-8 cm.
If the site is not irrigated, then a loss of ammonium compounds can occur. This is influenced by their volatility. In this case, urea can be compared in properties with ammonium nitrate.
If the owner decided on the autumn fertilization, then you should be prepared that it will not show itself as much as possible. This is due to the fact that instant decomposition occurs, while ammonium carbonate begins to be released, which in a short period is destroyed. Before the beginning of spring, a large particle of nitrogen will be washed out.
It is allowed to use urea in the autumn period if it is short, warm, without a lot of precipitation. Also, the soil should not be sandy or sandy. But, nevertheless, it is inappropriate to carry out this procedure in the fall. For this reason, experienced gardeners advise fertilizing in the spring. Pre-sowing feeding is also carried out at the moment when the plants are planted.
Fertilize the wells themselves. But in this case, there must be layers of earth. This will prevent plants from sprouting under the influence of ammonia. Experienced experts have repeatedly noted that the properties of urea are much better than other agrochemicals. For this reason, it is widely used in garden and greenhouse conditions. Most importantly, the solution will not damage the foliage, which is not the case with many other fertilizers.
As a result, the combination of watering and spraying brings a positive effect, since the rhizome develops well. So, urea is a highly effective fertilizer that many gardeners use. But a lot of newbies should familiarize themselves with what it is. After all, urea has its own characteristics and rules of use.