1. A comparison of different indices for nitrogen mineralization

   • J. J. R. Groot
   • V. J. G. Houba

   Original Paper Pages: 1 - 9

2. Leaching of dissolved organic carbon in soil following anhydrous ammonia application

   • D. E. Clay
   • S. A. Clay
   • S. S. Harper

   Original Paper Pages: 10 - 14

3. Subterranean termites: regulators of soil organic matter in the Chihuahuan Desert

   • M. H. Nash
   • W. G. Whitford

   Original Paper Pages: 15 - 18

4. Effects of legume green-manuring on nitrogen mineralization and some microbiological properties in an acid rice soil

   • K. K. R. Bhardwaj
   • N. Datt

   Original Paper Pages: 19 - 21

5. Bioavailability of heavy metals and abundance of arbuscular mycorrhiza in a soil polluted by atmospheric deposition from a smelter

   • I. Weissenhorn
   • C. Leyval
   • J. Berthelin

   Original Paper Pages: 22 - 28

6. Mineralization of carbon and nitrogen from fresh and anaerobically stored sheep manure in soils of different texture

   • Peter Sørensen
   • Erik Steen Jensen

   Original Paper Pages: 29 - 35

7. Dynamics of mineral nitrogen in soils supporting potato crops

   • Ron E. Wheatley
   • Karl Ritz

   Original Paper Pages: 36 - 40

8. Role of extracellular polysaccharide in the colonization of wheat (Triticum vulgare L.) roots by N₂-fixing cyanobacteria

   • Miroslav Gantar
   • Peter Rowell
   • Ian W. Sutherland

   Original Paper Pages: 41 - 48

9. Nitrogen fixation and beneficial effects of some grain legumes and green-manure crops on rice

   • R. Senaratne
   • D. S. Ratnasinghe

   Original Paper Pages: 49 - 54

10. Sugar yield, nitrogen uptake by sugar beet and optimal nitrogen fertilization in relation to nitrogen soil analyses and several additional factors

    • Victor J. G. Houba
    • Antoon W. M. Huijbregts
    • Gerrit Gort

    Original Paper Pages: 55 - 59

11. Comparative growth and symbiotic performance of four Acacia mangium provenances from Papua New Guinea in response to the supply of phosphorus at various concentrations

    • V. Vadez
    • G. Lim
    • H. G. Diem

    Original Paper Pages: 60 - 64

12. Competition for electron donors among nitrate reducers, ferric iron reducers, sulfate reducers, and methanogens in anoxic paddy soil

    • Christof Achtnich
    • Friedhelm Bak
    • Ralf Conrad

    Original Paper Pages: 65 - 72

13. Burial of soil-surface artifacts in the presence of lumbricid earthworms

    • G. W. Yeates
    • H. van der Meulen

    Original Paper Pages: 73 - 74

14. Applications of microarthropod life-history tactics in nature management and ecotoxicology

    • Henk Siepel

    Original Paper Pages: 75 - 83

15. Methanogenesis during rice growth as related to the water regime between crop seasons

    • G. Trolldenier

    Original Paper Pages: 84 - 86