1. Effects of soil invertebrates on the survival of some genetically engineered bacteria in leaf litter and soil

   • B. A. Byzov
   • E. B. Tretyakova
   • Z. Filip

   Original Paper Pages: 221 - 228

2. Denitrification, N₂-fixation and fermentation during anaerobic incubation of soils amended with glucose and nitrate

   • M. Swerts
   • R. Merckx
   • K. Vlassak

   Original Paper Pages: 229 - 235

3. Soil pH changes during legume growth and application of plant material

   • F. Yan
   • S. Schubert
   • K. Mengel

   Original Paper Pages: 236 - 242

4. Adaptation of green manure legumes to adverse conditions in rice lowlands

   • M. Becker
   • J. K. Ladha

   Original Paper Pages: 243 - 248

5. Biological nitrogen fixation in Azospirillum strain-maize genotype associations as evaluated by the ¹⁵N isotope dilution technique

   • I. E. Garcia de Salamone
   • J. Döbereiner
   • R. M. Boddey

   Original Paper Pages: 249 - 256

6. N₂O emissions from different cropping systems and from aerated, nitrifying and denitrifying tanks of a municipal waste water treatment plant

   • G. Benckiser
   • R. Eilts
   • F. Wenzhöfer

   Original Paper Pages: 257 - 265

7. Soil organic matter composition and pesticide bonding in sandy soils in relation to groundwater protection in the Northwest German Lower Plain

   • L. Beyer
   • H. -P. Blume
   • H. -R. Schulten

   Original Paper Pages: 266 - 272

8. Gram-negative bacterial flora on the root surface of wheat (Triticum aestivum) grown under different soil conditions

   • K. Sato
   • H. -Y. Jiang

   Original Paper Pages: 273 - 281

9. Terrestrial ciliates (Protozoa, Ciliophora) from two islands (Gough, Marion) in the southern oceans, with description of two new species, Arcuospathidium cooperi and Oxytricha ottowi

   • W. Foissner

   Original Paper Pages: 282 - 291

10. Contribution of denitrification and autotrophic and heterotrophic nitrification to nitrous oxide production in andosols

    • K. Inubushi
    • H. Naganuma
    • S. Kitahara

    Original Paper Pages: 292 - 298

11. Influence of heavy metals on the functional diversity of soil microbial communities

    • F. Kandeler
    • C. Kampichler
    • O. Horak

    Original Paper Pages: 299 - 306

12. Degradation of benzoate via benzoyl-coenzyme A and gentisate by Bacillus stearothermophilus PK1, and purification of gentisate 1,2-dioxygenase

    • P. Kiemer
    • B. Tshisuaka
    • F. Lingens

    Original Paper Pages: 307 - 313

13. Extractability of labelled microbial biomass N by electro-ultrafiltration and CaCl₂ extraction

    • T. Appel
    • B. Schneider
    • H. Kosegarten

    Original Paper Pages: 314 - 320

14. Nitrification of ammonium in different components of a flooded rice soil system

    • T. K. Adhya
    • P. Patnaik
    • N. Sethunathan

    Original Paper Pages: 321 - 326

15. Dynamics of CO₂ evolution in grey forest soil of the Baikal forest-steppe

    • L. V. Pomazkina
    • E. V. Lubnina
    • L. G. Kotova

    Original Paper Pages: 327 - 331

16. Assessing the organic phosphorus status of an Oxisol under tropical pastures following native savanna using ³¹P NMR spectroscopy

    • G. Guggenberger
    • L. Haumaier
    • R. J. Thomas

    Original Paper Pages: 332 - 339

17. Biodegradation of chlorothalonil in soil after suppression of degradation

    • K. Motonaga
    • K. Takagi
    • S. Matumoto

    Original Paper Pages: 340 - 345

18. Effect of Nostoc (Cyanobacteria) inoculation on the structure and stability of clay soils

    • L. Falchini
    • E. Sparvoli
    • L. Tomaselli

    Original Paper Pages: 346 - 352