1. Editorial

   Pages: 269 - 269

2. Interactions between soil organic matter status, cropping history, method of quantification and sample pretreatment and their effects on measured aggregate stability

   • R. J. Haynes

   ORIGINAL PAPER Pages: 270 - 275

3. Effect of salinity on growth and starvation-survival of a tropical Rhizobium strain

   • D. Lippi
   • M.R. De Paolis
   • I. Cacciari

   ORIGINAL PAPER Pages: 276 - 283

4. Carbon decomposition of the topsoils and soil fractions under forest and pasture in the western Brazilian Amazon basin, Rondônia

   • L. -S. Koutika
   • Th. Choné
   • C. C. Cerri

   ORIGINAL PAPER Pages: 284 - 287

5. Nitrogen mineralization and microbial activity in permanent pastures amended with nitrogen fertilizer or dung

   • D. J. Hatch
   • R. D. Lovell
   • P. M. Owen

   ORIGINAL PAPER Pages: 288 - 293

6. Seasonal changes of microbial biomass carbon related to climatic factors in soils from karst areas of southwest China

   • H. C. Piao
   • Y. T. Hong
   • Z. Y. Yuan

   ORIGINAL PAPER Pages: 294 - 297

7. Carbon, nitrogen and phosphorus mineralization of tree leaves and manure

   • P. L. Mafongoya
   • P. Barak
   • J. D. Reed

   ORIGINAL PAPER Pages: 298 - 305

8. Enzymatic hydrolysis of soil organic phosphorus by immobilized phosphatases

   • H. K. Pant
   • P. R. Warman

   ORIGINAL PAPER Pages: 306 - 311

9. Effects of a sulfonylurea herbicide on soil microarthropods

   • L. Rebecchi
   • M. A. Sabatini
   • R. Bertolani

   ORIGINAL PAPER Pages: 312 - 317

10. Effect of climate, soil type and earthworm activity on nitrogen transfer from a nitrogen-15-labelled decomposing material under field conditions

    • J. Cortez
    • G. Billes
    • M. B. Bouché

    ORIGINAL PAPER Pages: 318 - 327

11. An evaluation of plant-available soil nitrogen in selected sandy soils by electro-ultrafiltration, KCl, and CaCl₂ extraction methods

    • H. Dou
    • A. K. Alva
    • T. Appel

    ORIGINAL PAPER Pages: 328 - 332

12. How increasing availabilities of carbon and nitrogen affect atrazine behaviour in soils

    • R. Abdelhafid
    • S. Houot
    • E. Barriuso

    ORIGINAL PAPER Pages: 333 - 340

13. Differences in burrowing behaviour and spatial interaction between the two earthworm species Aporrectodea nocturna and Allolobophora chlorotica

    • Y. Capowiez

    ORIGINAL PAPER Pages: 341 - 346

14. Aging effect on enzyme activities in pressmud vermicasts of Lampito mauritii (Kinberg) and Eudrilus eugeniae (Kinberg)

    • K. Parthasarathi
    • L. S. Ranganathan

    ORIGINAL PAPER Pages: 347 - 350

15. Properties of protease extracted from tea-field soil

    • Y. Kamimura
    • K. Hayano

    ORIGINAL PAPER Pages: 351 - 355

16. Distribution of nitrogen pools in the soil profile of undisturbed and reseeded grasslands

    • A. Bhogal
    • D. V. Murphy
    • K. W. T. Goulding

    ORIGINAL PAPER Pages: 356 - 362