Hojjatie - AAPFCO

Biuret In Urea Fertilizers
• Urea has become the leading form of N fertilizers Worldwide.
• Historically there has been concern about level of biuret in urea.
• The potential adverse effect of biuret on plant growth is a concern.
• Biuret is phytotoxic.
• Biuret is mineralized by soil microorganisms at much lower rate
then urea.
• Biuret can damage seedlings.
• Foliar application of high biuret urea causes phytotoxicity.
• Crop tolerance to biuret varies according to the plant species, soil
conditions, fertilizer placement, and method of application.
• Biuret applied to soil or to plant foliage interferes with N
metabolism and protein synthesis.