1. Rate of differentiation and emergence of nodal maize roots

   • Sylvain Pellerin

   Research Article Pages: 155 - 161

2. Availability and uptake of inorganic nitrogen in a mixed old-growth coniferous forest

   • David P. Turner
   • Phillip Sollins
   • Nathan Rudd

   Research Article Pages: 163 - 174

3. Phosphorus fractions in soil solution: Influence of soil acidity and fertiliser additions

   • M. D. Ron Vaz
   • A. C. Edwards
   • M. S. Cresser

   Research Article Pages: 175 - 183

4. Soil chemical properties excluding field-layer species from beech forest mor

   • Ursula Falkengren-Grerup
   • Germund Tyler

   Research Article Pages: 185 - 191

5. Nitrogen transformation in soil treated with ¹⁵N labelled dried or composted ryegrass

   • P. Zaccheo
   • L. Crippa
   • P. L. Genevini

   Research Article Pages: 193 - 201

6. Selection for increased nodule number in common bean (Phaseolus vulgaris L.)

   • P. A. A. Pereira
   • B. D. Miranda
   • F. A. Bliss

   Research Article Pages: 203 - 209

7. Length densities, occupancies and weights of apple root systems

   • K. A. Hughes
   • P. W. Gandar

   Research Article Pages: 211 - 221

8. Leaf area and crop growth in relation to phenology of barley in Mediterranean environments

   • E. J. Van Oosterom
   • E. Acevedo

   Research Article Pages: 223 - 237

9. Response of Cynodon dactylon to prolonged water deficits under saline conditions

   • D. A. Devitt
   • D. C. Bowman
   • P. J. Schulte

   Research Article Pages: 239 - 251

10. Soil boron and selenium removal by three plant species

    • G. S. Bańuelos
    • G. E. Cardon
    • S. Zambrzuski

    Research Article Pages: 253 - 263

11. Nodule distribution on the roots of soybean and a supernodulating mutant in sand-vermiculite

    • Gustavo Caetano-Anollés
    • Peter M. Gresshoff

    Research Article Pages: 265 - 270

12. Effects of drought and root injury on plant-generated CS₂ emissions in soil

    • P. G. Hartel
    • R. E. Reeder

    Research Article Pages: 271 - 276

13. Microbial effects in maintaining organic and inorganic solution phosphorus concentrations in a grassland topsoil

    • Björn Seeling
    • Robert J. Zasoski

    Research Article Pages: 277 - 284

14. Presence of sporangia of Frankia in the rhizosphere of Discaria (Rhamnaceae)

    • M. S. Cusato
    • R. D. Tortosa

    Research Article Pages: 285 - 288

15. Establishment of willow cuttings grown in porous membrane root envelopes

    • Allan P. Drew

    Short Communication Pages: 289 - 293

16. Announcement

    Announcement Pages: 299 - 299

17. Erratum

    Erratum Pages: 300 - 300

18. Contents of volume 148 1993

    Legacy Pages: 301 - 304

19. Author index

    Legacy Pages: 304 - 304