1. Nitrogen mineralization in relation to site history and soil properties for a range of Australian forest soils

   • M. J. Connell
   • R. J. Raison
   • P. K. Khanna

   Original Paper Pages: 213 - 220

2. Biological control of Rhizoctonia sp. root rot of Casuarina equisetifolia seedlings by Frankia spp. strains

   • S. Gopinathan

   Original Paper Pages: 221 - 225

3. Soil enzymatic response to addition of municipal solid-waste compost

   • Claire Serra-Wittling
   • Sabine Houot
   • Enrique Barriuso

   Original Paper Pages: 226 - 236

4. Organic nitrogen mineralization in temperate humid-zone soils after two and six weeks of aerobic incubation

   • S. J. González-Prieto
   • M. Carballas
   • M. C. Villar

   Original Paper Pages: 237 - 242

5. Preservation of nitrifying capacity and nitrate availability in waterlogged soils by radial oxygen loss from roots of wetland plants

   • W. M. H. G. Engelaar
   • J. C. Symens
   • C. W. P. M. Blom

   Original Paper Pages: 243 - 248

6. Influence of acid soil on nodule numbers in relation to polyamine and tannin concentrations in roots of Phaseolus vulgaris

   • Andreas B. Wolff
   • Maria Sidirelli
   • Kiriakos Kotzabasis

   Original Paper Pages: 249 - 252

7. Microbial biomass, activity, and organic matter accumulation in soils contaminated with heavy metals

   • Giovanni Valsecchi
   • Carmen Gigliotti
   • Anna Farini

   Original Paper Pages: 253 - 259

8. Biological nitrogen fixation at elevated temperature in different Azospirillum species and strains

   • P. Aggarwal
   • K. Chaudhary

   Original Paper Pages: 260 - 262

9. Soil protozoa and forest tree growth: non-nutritional effects and interaction with mycorrhizae

   • Georg Jentschke
   • Michael Bonkowski
   • Stefan Scheu

   Original Paper Pages: 263 - 269

10. Comparison of symbiotic effectiveness of Rhizobium sp. with positive hydrogen-uptake activity compared with negative mutants in relation to nitrogen fixation in mungbean (Vigna radiata L.)

    • Mohd Yousuf Zargar
    • R. S. Kahlon

    Original Paper Pages: 270 - 274

11. Biostatic effect of fumigation and pesticide drenches on an endomycorrhizal-Rhizobium-legume tripartite association under field conditions

    • K. Udaiyan
    • S. Manian
    • S. Greep

    Original Paper Pages: 275 - 283

12. Soybean nodulation and nitrogen fixation on soil amended with plant residues

    • J. R. Heckman
    • D. Kluchinski

    Original Paper Pages: 284 - 288

13. Ability of two Bradyrhizobium japonicum strains to persist in soil and nodulate soybeans after dual inoculation

    • J. C. Cleyet-Marel
    • Y. Crozat
    • X. Pinochet

    Original Paper Pages: 289 - 293

14. Effect of various mulches on soil microarthropods under a maize crop

    • M. Adetola Badejo
    • Guanglong Tian
    • Lijbert Brussaard

    Original Paper Pages: 294 - 298