title: Urea-triazone N characteristics and uses.
abstract: Urea-triazone nitrogen (N) is a stable solution resulting from a controlled reaction in aqueous medium of urea, formaldehyde, and ammonia which contains at least 25% total N. This N source contains no more than 40%, nor less than 5%, of total N from unreacted urea and not less that 40% from triazone. All other N shall be derived from water-soluble dissolved reaction products of the above reactants. It is a source of slowly available N. The rate of mineralization of urea-triazone is about 66% that of urea after 8 days when incorporated in a Munjor sandy loam. Ammonia volatilization losses of N applied as urea-triazone were about 41% of those from urea on a Cecil sandy loam in the first week after application. N leaching losses through saturated Yolo loam columns of urea-triazone were about two thirds that of urea or nitrate N. This N source has proven to be a safer and more effective material for direct application on plant foliage. Tomato growth was enhanced with foliar application of urea-triazone relative to that obtained from ammonium nitrate or urea. The stability of this N source from potential losses via ammonia volatilization and nitrate leaching when soil applied is also documented by results from university trials.
authors.affiliation: Technical Agricultural Products, Research and Development, Tessenderlo Kerley, Inc, Greensboro, NC 27405, USA. jclapp@tkinet.com
authors.forename: J G
authors.initials: JG
authors.lastname: Clapp
mesh_terms: D000383:Agriculture / Q000379:methods; D000641:Ammonia / Q000737:chemistry* / Q000378:metabolism; D001673:Biodegradation, Environmental; D018551:Solanum lycopersicum / Q000254:growth & development; D015394:Molecular Structure; D009584:Nitrogen / Q000737:chemistry* / Q000378:metabolism; D012987:Soil / Q000032:analysis; D012995:Solubility; D014508:Urea / Q000737:chemistry* / Q000378:metabolism; D014835:Volatilization; D014867:Water / Q000737:chemistry
chemical_list: D012987:Soil; D014867:Water; D000641:Ammonia; D014508:Urea; D009584:Nitrogen