1. Sucrose fatty acid esters enhance efficiency of foliar-applied urea-nitrogen to soybeans

   • M. Ikeda
   • W. K. Choi
   • Y. Yamada

   OriginalPaper Pages: 127 - 131

2. Effects of N fertilizer application timing on common bean production

   • R. A. Henson
   • F. A. Bliss

   OriginalPaper Pages: 133 - 138

3. Assessment of the nitrogen requirements of maize (Zea mays L.) in Southern Guinea Savanna agroecology of Nigeria

   • O. O. Agbede
   • A. G. Ojanuga
   • A. Y. Adepoju

   OriginalPaper Pages: 139 - 144

4. Transformations of residual fertilizer P in a semi-arid tropical soil under eight-year peanut-wheat rotation

   • M. S. Aulakh
   • N. S. Pasricha

   OriginalPaper Pages: 145 - 152

5. Comparison of Olsen and Pi soil tests for evaluating phosphorus bioavailability in a calcareous soil treated with single superphosphate and partially acidulated phosphate rock

   • R. G. Menon
   • S. H. Chien
   • Abd el Nabi Gadalla

   OriginalPaper Pages: 153 - 158

6. Potassium response ofBrassica chinensis Baily in the Guangzhou area, Southern China

   • H. D. Ruan
   • R. J. Gilkes
   • X. Z. Hu

   OriginalPaper Pages: 159 - 162

7. The effect of level of application on the residual value of superphosphate on a sandy soil in south-western Australia

   • M. D. A. Bolland
   • N. J. Barrow

   OriginalPaper Pages: 163 - 172

8. Relative agronomic merit of fused calcium phosphate

   • E. Otabbong
   • J. Persson

   OriginalPaper Pages: 173 - 185

9. Fate of ammonium-N in pot studies as affected by DCD addition

   • K. Vilsmeier

   OriginalPaper Pages: 187 - 189

10. Turnover of¹⁵N ammonium sulfate with dicyandiamide under aerobic and anaerobic soil conditions

    • K. Vilsmeier

    OriginalPaper Pages: 191 - 196

11. Potential use of naturally occurring sulphuric acid to beneficiate poorly soluble phosphate from Eppawala, Sri Lanka

    • Kapila Dahanayake
    • Atula Senaratne
    • A. Liyanaarachchi

    OriginalPaper Pages: 197 - 201

12. Flotation of a carbonate rich sedimentary phosphate rock

    • T. F. Al-Fariss
    • H. O. Ozbelge
    • A. M. Abdulrazik

    OriginalPaper Pages: 203 - 208

13. Comparison between acidulation by sulfuric acid and by phosphoric acid for Saudi phosphate rock

    • T. F. Al-Fariss
    • S. S. E. H. Elnashaie
    • H. A. Ibrahim

    OriginalPaper Pages: 209 - 227

14. Status of TVA/NFERC model containment demonstration program

    • C. Mann

    OriginalPaper Pages: 229 - 232

15. Economical nitrogen—sulfur fluids

    • J. L. Boles
    • C. A. Hodge
    • L. C. Faulkner

    OriginalPaper Pages: 233 - 248