1. Nitrogen leaching and uptake from calcium cyanamide in comparison to urea and calcium ammonium nitrate in an ultisol from the humid tropics

   • J. L. Pleysier
   • Y. Arora
   • A. S. R. Juo

   OriginalPaper Pages: 193 - 199

2. The initial and residual agronomic effectiveness of some Indian, USA and Australian rock phosphates

   • A. K. Ghosh
   • R. J. Gilkes

   OriginalPaper Pages: 201 - 218

3. Ammonia losses from surface-applied urea as related to urea application rates, plant residue and calcium chloride addition

   • L. B. Fenn
   • H. L. Malstrom
   • E. Wu

   OriginalPaper Pages: 219 - 227

4. How effective are Calciphos and Phospal?

   • M. D. A. Bolland
   • R. J. Gilkes

   OriginalPaper Pages: 229 - 239

5. Seasonal patterns of phosphate uptake in relation to comparisons between fertilizers

   • R. S. Beckwith
   • P. Tolson

   OriginalPaper Pages: 241 - 254

6. Urea, ammonium sulfate and dicyandiamide transformations in Costa Rican soils

   • K. Vilsmeier
   • E. Bornemisza
   • A. Amberger

   OriginalPaper Pages: 255 - 261

7. Ammonia volatilization from point-placed urea in upland, sandy soils

   • R. J. Buresh

   OriginalPaper Pages: 263 - 268

8. The effects of nitrogen fertilizer form on the plant availability of phosphate from soil, phosphate rock and mono-calcium phosphate

   • J. N. Apthorp
   • M. J. Hedley
   • R. W. Tillman

   OriginalPaper Pages: 269 - 283