Transformation of urea and ammonium nitrate in an entisol and a spodosol under citrus production

References

• Alpkem Corporation . 1986 . RFA methodology for nitrite and nitrate nitrogen , A303 – S170 . Clackmas , OR : Alpkem Corporation .
   Google Scholar
• Alpkem Corporation . 1989 . RFA methodology for ammonia nitrogen , A303 – S020 . Clackmas , OR : Alpkem Corporation .
   Google Scholar
• Ayanaba , A. and Kang , B.T. 1976 . Urea transformations in some tropical soils . Soil Biol. Biochem. , 8 : 313 – 316 .
   Web of Science ®Google Scholar
• Broadbent , F.E. , Hill , G.N. and Tyler , K. 1958 . Transformation and movement of urea in soils . Soil Sci. Soc. Amer. Proc. , 22 : 303 – 307 .
   Google Scholar
• Chapman , H.D. and Liebig , G.F. 1952 . Field and laboratory studies of nitrate accumulation in soils . Soil Sci. Soc. Amer. Proc. , 16 : 276 – 282 .
   Web of Science ®Google Scholar
• Christianson , C.B. , Hedlin , R.A. and Cho , C.M. 1979 . Loss of nitrogen from soil during nitrification of urea . Can. J. Soil Sci. , 59 : 147 – 154 .
   Web of Science ®Google Scholar
• Darrah , P.R. , Nye , P.H. and White , R.E. 1986 . Simultaneous nitrification and diffusion in soil. V. The effect of pH change, following the addition of ammonium sulphate, on the activity of nitrifiers . J. Soil Sci. , 37 : 479 – 484 .
   Web of Science ®Google Scholar
• Douglas , L.A. and Bremner , J.M. 1970 . Extraction and colorimetric determination of urea in soils . Soil Sci. Soc. Amer. Proc. , 34 : 859 – 862 .
   Google Scholar
• Ferguson , R.B. , Kissel , D.E. , Koelliker , J.K. and Basel , W. 1984 . Ammonia volatilization from surface applied urea: Effect of hydrogen ion buffering capacity . Soil Sci. Soc. Amer. J. , 48 : 578 – 582 .
   Web of Science ®Google Scholar
• Frederick , L.R. 1956 . The formation of nitrate from ammonium nitrogen in soils: I. Effect of temperature . Soil Sci. Soc. Amer. Proc. , 20 : 196 – 200 .
   Google Scholar
• Gameh , M.A. , Angle , J.S. and Axley , J.H. 1990 . Effects of urea‐potassium chloride and nitrogen transformations on ammonia volatilization from urea . Soil Sci. Soc. Amer. J. , 54 : 1768 – 1772 .
   Web of Science ®Google Scholar
• Gee , G.W. and Bauder , J.W. 1986 . “ Particle size analysis ” . In Methods of Soil Analysis , Agron. Monograph 9 Edited by: Klute , A. 383 – 441 . Madison , WI : Agronomy Society of America and Soil Science Society of America .
   Google Scholar
• Ghosh , S.K. , Chakravorty , A.K. and Pal , P.K. 1967 . Infra‐red absorption study of urea humic acid complex . Technol. India , 4 : 71 – 74 .
   Google Scholar
• Knight , C.W. and Sparrow , S.D. 1993 . Urea nitrogen budget for a subartic agricultural soils . Soil Sci. Soc. Amer. J. , 57 : 1138 – 1144 .
   Web of Science ®Google Scholar
• McInnes , K.J. and Fillery , I.R.P. 1989 . Modeling and field measurement of the effect of nitrogen source on nitrification . Soil Sci. Soc. Amer. J. , 53 : 1264 – 1269 .
   Web of Science ®Google Scholar
• Mitchell , G.A. and Offner , A. 1982 . Nitrogen transformation and availability in Alaskan soils . Agroborealis , 14 : 69 – 72 .
   Google Scholar
• Moormann , F.R. and Breemen , N.V. 1978 . Rice: Soil, Water, Land , Laguna , , Philippines : IRRI, Losbanos .
   Google Scholar
• Mulvaney , R.L. and Bremner , J.M. 1979 . A modified diacetyl monoxime method for colorimetric determination of urea in soil extracts . Commun. Soil Sci. Plant Anal. , 10 : 1163 – 1170 .
   Web of Science ®Google Scholar
• Nelson , D.W. and Sommers , L.E. 1986 . “ Total carbon, organic carbon, organic matter ” . In Methods of Soil Analysis , Edited by: Page , L.N. 539 – 577 . Madison , WI : Agronomy Society of America and Soil Science Society of America .
   Google Scholar
• Overrein , L.N. and Moe , P.G. 1967 . Factors affecting urea hydrolysis and ammonia volatilization . Soil Sci. Soc. Amer. Proc. , 31 : 57 – 61 .
   Web of Science ®Google Scholar
• Pang , P.C.K. , Cho , C.M. and Hedlin , R.A. 1977 . Distribution and transformation of band‐applied urea in soil following incubation under isothermal and temperature gradient conditions . Can. J. Soil Sci. , 57 : 409 – 416 .
   Web of Science ®Google Scholar
• Sankhayan , S.D. and Shukla , U.C. 1976 . Rates of urea hydrolysis in five soils of India . Geoderma , 16 : 171 – 178 .
   Web of Science ®Google Scholar
• Sarigumba , T.I. , Pritchett , W.L. and Smith , W.H. 1978 . Transformations of urea in a Leon fine sand under four soil moisture regimes . Soil Crop Sci. Soc. Fla. Proc. , 37 : 146 – 150 .
   Web of Science ®Google Scholar
• Singh , M. and Yadav , D.S. 1981 . Transformation of urea and ammonium sulphate in different soil . Plant Soil , 63 : 511 – 515 .
   Web of Science ®Google Scholar
• Sinha , H. and Prasad , K. 1967 . Performance, transformation and movement of urea in acid soils . J. Indian Soc. Soil Sci. , 22 : 308 – 311 .
   Google Scholar
• Tomlinson , T.E. 1970 . Urea‐agronomic applications . Proc. Fert. Soc. , 113 : 76 (Soil Fert. 34:1502)
   Google Scholar
• Wetselaar , R. , Passioura , J.B. and Singh , B.R. 1972 . Consequences of bonding nitrogen fertilizers in soil. I. Effects on nitrification . Plant Soil , 36 : 159 – 175 .
   Web of Science ®Google Scholar
• White , C.S. and Gosh , J.R. 1987 . Factors controlling nitrogen mineralization and nitrification in forest ecosystems in New Mexico . Biol. Fert. Soil , 5 : 195 – 202 .
   Web of Science ®Google Scholar
• Yadav , D.S. , Kumar , V. , Singh , M. and Relan , P.S. 1987 . Effect of temperature and moisture on kinetics of urea hydrolysis and nitrification . Aust. J. Soil Res. , 25 : 185 – 191 .
   Web of Science ®Google Scholar
• Florida Agricultural Experiment Station Journal Series No. R‐04928.
   Google Scholar