1. Quantitative analysis of earthworm burrow systems with respect to biological soil-structure regeneration after soil compaction

   • M. Langmaack
   • S. Schrader
   • K. Kotzke

   ORIGINAL PAPER Pages: 219 - 229

2. Effects of a cadmium-contaminated sewage sludge compost on dynamics of organic matter and microbial activity in an arid soil

   • J. L. Moreno
   • T. Hernández
   • C. Garcia

   ORIGINAL PAPER Pages: 230 - 237

3. Differential effects of soil properties on leaf nitrogen release

   • G. Seneviratne
   • L. H. J. Van Holm
   • S. A. Kulasooriya

   ORIGINAL PAPER Pages: 238 - 243

4. Phosphorus mineralization and microbial biomass in a Florida Spodosol: effects of water potential, temperature and fertilizer application

   • P. F. Grierson
   • N. B. Comerford
   • E. J. Jokela

   ORIGINAL PAPER Pages: 244 - 252

5. Influence of stock camping behaviour on the soil microbiological and biochemical properties of grazed pastoral soils

   • R. J. Haynes
   • P. H. Williams

   ORIGINAL PAPER Pages: 253 - 258

6. Effects of increasing periods under intensive arable vegetable production on biological, chemical and physical indices of soil quality

   • R. J. Haynes
   • R. Tregurtha

   ORIGINAL PAPER Pages: 259 - 266

7. Diurnal and seasonal patterns of nitrogenase activity of red alder in comparison with white clover in silvopastoral agroforestry systems

   • Z. Teklehaimanot
   • R. Martin

   ORIGINAL PAPER Pages: 267 - 270

8. The CLIMEX soil-heating experiment: soil response after 2 years of treatment

   • P. S. J. Verburg
   • W. K. P. Van Loon
   • A. Lükewille

   ORIGINAL PAPER Pages: 271 - 276

9. Soil organic matter dynamics after the conversion of arable land to pasture

   • P. F. A. M. Römkens
   • Johannes van der Plicht
   • Jan Hassink

   ORIGINAL PAPER Pages: 277 - 284

10. The number of bacteria in the rhizosphere during plant development: relating colony-forming units to different reference units

    • B. M. Duineveld
    • J. A. Van Veen

    ORIGINAL PAPER Pages: 285 - 291

11. Phospholipid fatty acid profiles as indicators for the microbial community structure in soils along a climatic transect in the Judean Desert

    • Yosef Steinberger
    • L. Zelles
    • Jean Charles Munch

    ORIGINAL PAPER Pages: 292 - 300

12. Solubilization of inorganic phosphates and growth emergence of wheat as affected by Azotobacter chroococcum mutants

    • V. Kumar
    • Neeru Narula

    ORIGINAL ARTICLE Pages: 301 - 305

13. Effect of climate and soil type on the immobilization of nitrogen by decomposing straw in northern and southern Europe

    • M. V. Cheshire
    • C. N. Bedrock
    • P. Alpendre

    ORIGINAL PAPER Pages: 306 - 312

14. Genotypic diversity and symbiotic effectiveness of rhizobia isolated from root nodules of Phaseolus vulgaris L. grown in Tunisian soils

    • R. Mhamdi
    • M. Jebara
    • M. Mars

    ORIGINAL PAPER Pages: 313 - 320

15. Soil mineral nitrogen dynamics under bare fallow and wheat in vertisols of semi-arid Mediterranean Morocco

    • M. Corbeels
    • G. Hofman
    • O. Van Cleemput

    ORIGINAL PAPER Pages: 321 - 328