1. Zinc diffusion and extractability as affected by zinc carrier and soil chemical properties

   • A. S. Modaihsh

   OriginalPaper Pages: 85 - 91

2. Response of promiscuously nodulating soybean to N and P fertilization andBradyrhizobium inoculation in a ferruginous tropical soil (Haplustalf)

   • O. O. Olufajo

   OriginalPaper Pages: 93 - 100

3. Field evaluation of commercial triple superphosphate fertilizers

   • G. L. Mullins
   • C. E. Evans

   OriginalPaper Pages: 101 - 106

4. Influence of sulphur fertilizer placement, soil moisture and temperature on yield response of rape to sulphur-bentonite

   • W. F. Nuttall
   • C. C. Boswell
   • B. Swanney

   OriginalPaper Pages: 107 - 114

5. Micronutrients and heavy metals in Dutch agriculture

   • W. van Driel
   • K. W. Smilde

   OriginalPaper Pages: 115 - 126

6. Chelates in agriculture

   • D. F. Clemens
   • B. M. Whitehurst
   • G. B. Whitehurst

   OriginalPaper Pages: 127 - 131

7. Regulatory models for slow release fertilizer

   • D. L. Terry

   OriginalPaper Pages: 133 - 137

8. The theory, design and experience of Lamella Gravity Settlers in the phosphate industry

   • Sandra E. Wenk

   OriginalPaper Pages: 139 - 143