1. Behaviour of iron chelates in calcareous soils

   • D. G. Hill-Cottingham
   • C. P. Lloyd-Jones

   OriginalPaper Pages: 189 - 201

2. A laboratory study of nitrogen mobilisation during litter decomposition

   • R. T. Fenton

   OriginalPaper Pages: 202 - 214

3. Eine studie über den Zusammenhang zwischen Bodentyp, Klima und Vegetation in Ecuador

   • Erwin Frei

   OriginalPaper Pages: 215 - 236

4. Exploratory pot experiments on sensitiveness of different crops to sodium: D. Barley

   • J. J. Lehr
   • J. M. Wybenga

   OriginalPaper Pages: 237 - 253

5. Relations between the potash requirements of crops and meteorological conditions

   • F. Van Der Paauw

   OriginalPaper Pages: 254 - 268

6. Investigations on the determination of the available manganese content of soils

   • Else Boken

   OriginalPaper Pages: 269 - 285

7. Uptake of phosphorus from P³²-labelled superphosphate by field crops

   • G. E. G. Mattingly
   • F. V. Widdowson

   OriginalPaper Pages: 286 - 304