Neem Coated Urea

Controlled release fertiliser, slowing the release of nitrogen



Controlled release fertiliser, slowing the release of nitrogen

Coated urea is a type of controlled-release fertiliser, where the urea granule is encapsulated with a coating that slows the release of nitrogen. The concept behind coated urea is to improve nutrient use efficiency and reduce environmental impact. 

Urea is a commonly used nitrogen fertiliser with a high nutrient content (46% nitrogen). However, urea can be rapidly converted to ammonia gas in the soil, a process called volatilisation, resulting in nitrogen loss to the atmosphere and reduced efficiency of the fertiliser.

Coated urea (also known as slow-release or controlled-release urea) is designed to address this issue. The urea granule is coated with a semi-permeable material, such as sulfur, polymer, or a combination of both.

This coating slows down the release of nitrogen into the soil, making it available to plants over a longer period. This can reduce the number of fertilizer applications required, potentially lowering labor and equipment costs.

Additionally, coated urea can reduce nitrogen losses due to leaching and volatilization, potentially leading to improved nitrogen use efficiency and decreased environmental impact. However, the effectiveness of these benefits can vary based on factors such as the thickness of the coating, soil conditions, and local climate.

As always, proper nutrient management practices, including soil testing and precise application, are essential to maximizing the benefits of coated urea or any fertiliser.

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