1. A comparative study of the ability of organic nitrogenous compounds to serve as sole sources of nitrogen for the growth of plants

   • E. G. Bollard

   OriginalPaper Pages: 153 - 166

2. Chlorophyll-type compounds in soil

   • Paul B. Hoyt

   OriginalPaper Pages: 167 - 180

3. Partial substitution of sodium for potassium in water cultures

   • A. H. Montasir
   • H. H. Sharoubeem
   • G. H. Sidrak

   OriginalPaper Pages: 181 - 194

4. An automatic soil-washing apparatus for fungal isolation

   • T. F. Hering

   OriginalPaper Pages: 195 - 200

5. Mutual shading as a factor limiting the yield response of rice to application of nitrogen, phosphorus and potassium fertilizers

   • A. Tanaka

   OriginalPaper Pages: 201 - 210

6. The ecology of micro-organisms on, and the decomposition of, insect wings in the soil

   • N. Okafor

   OriginalPaper Pages: 211 - 237

7. Studies on microbial antagonism in the establishment of clover pasture

   • A. A. Holland

   OriginalPaper Pages: 238 - 248

8. The distribution and persistence of diazinon applied to plant and soil and its influence on rhizosphere and soil microflora

   • H. B. Gunner
   • B. M. Zuckerman
   • Ruth E. Longley

   OriginalPaper Pages: 249 - 264

9. Pathways of ions from soil into root according to diffusion models

   • Hans Jenny

   OriginalPaper Pages: 265 - 289

10. Effect of divalent and other ions on potassium uptake by barley roots

    • M. El Nashar
    • A. K. Helmy
    • M. M. Elgabaly

    OriginalPaper Pages: 290 - 296

11. Indices of calcium availability and degree of dispersion in soils

    • S. Shah Singh
    • B. Rama Moorthy

    OriginalPaper Pages: 297 - 304

12. Photoelectric equipment for a quick determination of leaf areas

    • W. H. Moelker

    Short Communication Pages: 305 - 308

13. Chlorosis in plants growing in latosolic soil

    • A. W. Moore
    • S. A. Adetunji

    Short Communication Pages: 309 - 312