Urea Fertilizers Granular

About Urea Fertilizers Granular

Urea fertilizers are widely used in agriculture. They are considered an economic nitrogen source.

The chemical formula of urea is CO(NH₂)₂ and, in nature, urea is excreted in the urine of mammals. Commercial urea fertilizers are produced by reacting ammonia with carbon dioxide.

In its solid form, urea is provided as either prills or granules. Granules are slightly larger than prills and are more dense. Both prilled and granular urea fertilizers contain 46% N.

Nitrogen leaching and volatilization rates are usually higher when using the prilled form. Therefore, granular urea fertilizers are 15-20% more efficient than prilled.

Urea fertilizers are highly soluble (solubility of 1079 g/L at 20C). Therefore, in addition to soil applications, urea fertilizers can be also used in fertigation or as a foliar application. However, urea fertilizers should not be used in soilless culture, as urea will immediately leach out of the container.