کود ازته

Nitrogen can be absorbed by the plant in the form of nitrate, ammonium ion and urea.

Ammonium nitrate contains 33% nitrogen and both forms of nitrogen can be absorbed by plants.

Because it has a negative charge, it does not absorb soil colloids and is exposed to leaching from the soil.

But because it has a positive charge, it is absorbed by soil colloids. Urea is the most common nitrogen fertilizer in Iran.

Urea is an organic compound and can be absorbed by plants in the same way.

Urea solution is also used in foliar spraying of plants.

Ammonium urea nitrate can be applied to the soil before planting or as a rootstock after the plant has grown some.

Ammonium sulfate, in addition to nitrogen, contains 24% sulfur.

Ammonium hydrate, which is obtained by dissolving ammonia in water, is placed under a layer of soil before planting with special syringes.

Calcium nitrate and potassium nitrate have a low percentage of nitrogen and are less used as a source of nitrogen fertilizer in the soil.

These fertilizers are often used in nutrient solutions as sources of calcium or potassium. One of the fertilizers used is urea fertilizer.

Urea fertilizer, also known as sugar fertilizer, is one of the most widely used and cheapest chemical nitrogen fertilizers in the world.

Urea fertilizer has 46% nitrogen and its solubility in water is very good and for this reason it is used in the soil to prepare fertilizer solutions and spray on the plant.

In foliar spraying on the plant, urea fertilizer may contain some toxic substance, which should not be more than a certain amount.

The problem with urea fertilizer is that due to its high solubility, it is very washable in the soil.

This means that if the irrigation water or rainfall is heavy and the soil is sandy, this fertilizer can be easily washed in the soil.

Another important fertilizer is ammonium sulfate fertilizer.

This fertilizer has 2% nitrogen and 24% sulfur and is acidic and is the best fertilizer for soil conditions in Iran.

Ammonium sulfate fertilizer is relatively expensive due to its low nitrogen content.

Ammonium nitrate fertilizer is another important fertilizer that is produced from a combination of ammonia and nitric acid.

The characteristic of this fertilizer is that it has both types of plant nitrogen sources, namely nitrate and ammonium.

And one of its disadvantages is that it easily absorbs moisture from the air and the fertilizer grains stick together and form lumps, and the other is that it is flammable.

That is, if the fertilizer is hit, it will catch fire and cause a fire problem.

Another popular nitrogen fertilizer is urea fertilizer with sulfur coating.

The solubility of urea fertilizer is high and the possibility of washing is high and the grains of urea fertilizer form a sulfur coating on it.

This fertilizer is called slow dissolving.

Another famous nitrogen fertilizer is urea fertilizer with sulfur coating.

The solubility of urea fertilizer is high and the possibility of washing is high and the grains of urea fertilizer form a sulfur coating on it.

This fertilizer is called slow dissolving.

This means that the SU fertilizer gradually releases its nitrogen and the leaching and loss of fertilizer is much less.

And in this respect it can be a good fertilizer,

but it is more expensive than ordinary urea fertilizer

And for ornamental plants and for conditions where the possibility of leaching is high or products that are economically viable can be a suitable and useful fertilizer.










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