1. Increase in nitrous oxide production in soil induced by ammonium and organic carbon

   • D. W. Bergstrom
   • M. Tenuta
   • E. G. Beauchamp

   Original Paper Pages: 1 - 6

2. Microbial biomass, N mineralization, and the activities of various enzymes in relation to nitrate leaching and root distribution in a slurry-amended grassland

   • Ellen Kandeler
   • Gerfried Eder
   • Monika Sobotik

   Original Paper Pages: 7 - 12

3. Soil organic matter quality as influenced by tillage, lime, and phosphorus

   • Régis R. Simard
   • Denis A. Angers
   • Claude Lapierre

   Original Paper Pages: 13 - 18

4. Effects of increasing ultraviolet B radiation on decomposition and soil organic matter dynamics: a synthesis and modelling study

   • Daryl L. Moorhead
   • Terry Callaghan

   Original Paper Pages: 19 - 26

5. Turnover of interlayer ammonium in soil cropped with sugar beet

   • C. Marzadori
   • L. Vittori Antisari
   • P. Sequi

   Original Paper Pages: 27 - 31

6. Earthworms disseminate a soil-borne plant pathogen, Fusarium oxysporum f. sp. raphani

   • K. Toyota
   • M. Kimura

   Original Paper Pages: 32 - 36

7. Effect of insecticides on the availability of nutrients, nitrogen fixation, and phosphate solubility in the rhizosphere soil of rice

   • A. C. Das
   • D. Mukherjee

   Original Paper Pages: 37 - 41

8. Effect of long-term field exposure of soil to acetylene on nitrification, denitrification, and acetylene consumption

   • L. K. Klemedtsson
   • A. R. Mosier

   Original Paper Pages: 42 - 48

9. Microbial activity and leaching during initial oak leaf litter decomposition

   • A. Tietema
   • W. W. Wessel

   Original Paper Pages: 49 - 54

10. Comparative effects of vesicular-arbuscular mycorrhizal inoculation and phosphorus fertilization on growth and phosphorus uptake of maize (Zea mays L.) and sorghum (Sorghum bicolor L.) plants under drought-stressed conditions

    • O. Osonubi

    Original Paper Pages: 55 - 59

11. A method of processing soil core samples for root studies by subsampling

    • Götz Schroth
    • Dorothee Kolbe

    Original Paper Pages: 60 - 62

12. Influence of the earthworm Aporrectodea trapezoides (Lumbricidae) on the colonization of alfalfa (Medicago sativa L.) roots by Rhizobium meliloti L5-30R and the survival of R. meliloti L5-30R in soil

    • Peter M. Stephens
    • Christopher W. Davoren
    • Bernard M. Doube

    Original Paper Pages: 63 - 70

13. Impact of pasture contamination by copper, chromium, and arsenic timber preservative on soil microbial properties and nematodes

    • R. D. Bardgett
    • T. W. Speir
    • H. A. Kettles

    Original Paper Pages: 71 - 79

14. Near-infrared characteristics of forest humus are correlated with soil respiration and microbial biomass in burnt soil

    • Hannu Fritze
    • Petri Järvinen
    • Risto Hiukka

    Short Communication Pages: 80 - 82