1. Response of irrigated maize to urea-ammonium nitrate and ammonium thiosulphate solutions on a sulphur deficient soil

   • P. L. Graziano
   • G. Parente

   OriginalPaper Pages: 91 - 95

2. Ammonia volatilization from urea as affected by the addition of iron pyrites and method of application

   • D. Blaise
   • P. C. Tyagi
   • O. P. S. Khola

   OriginalPaper Pages: 97 - 101

3. Ammonium nitrogen uptake by rice grown in acid sulfate soil under controlled redox conditions

   • A. Jugsujinda
   • J. Prasittikhet
   • R. P. Gambrell

   OriginalPaper Pages: 103 - 109

4. Fertilizer inputs, nutrient balance and soil nutrient supplying power in intensive, irrigated rice system. III. Phosphorus

   • A. Dobermann
   • K. G. Cassman
   • M. F. Pampolino

   OriginalPaper Pages: 111 - 125

5. Effects of N management on N₂O and CH₄ fluxes and¹⁵N

   • J. A. Delgado
   • A. R. Mosier
   • J. Vermeulen

   OriginalPaper Pages: 127 - 134

6. Innovations in beneficiation technology for low grade phosphate rocks

   • Zafar Iqbal Zafar
   • M. M. Anwar
   • D. W. Pritchard

   OriginalPaper Pages: 135 - 151

7. Nitrogen release from polyolefin-coated urea with attention to individual weights

   • Shigeru Takahashi
   • Shin-ichi Ono

   Research Note Pages: 153 - 156