Nutrient Source Specifics
Looking for brief information about the production, agricultural use, management practices, and chemical properties of common fertilizer materials? Nutrient Source Specifics are one-page fact sheets highlighting various fertilizers and nutrient sources. Written by IPNI scientific staff, these items are primarily for educational use by a non-technical audience. Consult with a local expert regarding specific recommendations on nutrient use. This series is also available in Chinese, French, Russian, and Spanish.
Urea
NSS-1 Urea - is the most widely used solid N fertilizer in the world. Urea is also commonly found in nature since it is expelled in the urine of animals. The high N content of urea makes it efficient to transport to farms and apply to fields. Urea is the most widely used solid N fertilizer in the world.
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Urea Ammonium Nitrate
NSS-7 Urea Ammonium Nitrate - Liquid fertilizer solutions or fluid fertilizers are popular in many areas because they are safe to handle, convenient to mix with other nutrients and chemicals, and are easily applied. A solution of urea CO(NH2)2 and ammonium nitrate NH4NO3 containing between 28 and 32% N is the most popular N fluid fertilizer.
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Urease Inhibitors
NSS-25 Urease Inhibitors - Some compounds added to urea or urea-containing fertilizers can reduce the rate of the first “hydrolysis” step, and slow the rate of ammonia production. Under certain conditions, this can help reduce ammonia loss to the atmosphere.
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