1. Soil phosphorus dynamics and maize response to different rates of phosphorus fertilizer applied to an Acrisol in western Kenya

   • Generose Nziguheba
   • Roel Merckx
   • Cheryl A. Palm

   OriginalPaper Pages: 1 - 10

2. H⁺ budget in oligotrophic Quercus pyrenaica forests: atmospheric and management-induced soil acidification?

   • G. Moreno Marcos
   • J.F. Gallardo Lancho

   OriginalPaper Pages: 11 - 22

3. Utilization of organic nitrogen at two different substrate pH by different ectomycorrhizal fungi growing in symbiosis with Pinus sylvestris seedlings

   • Håkan Wallander

   OriginalPaper Pages: 23 - 30

4. Quantitative effects of soil nitrate, growth potential and phenology on symbiotic nitrogen fixation of pea (Pisum sativum L.)

   • Anne-Sophie Voisin
   • Christophe Salon
   • Bertrand Ney

   OriginalPaper Pages: 31 - 42

5. Response of the root system of a winter wheat crop to waterlogging

   • N. Brisson
   • B. Rebière
   • P. Renault

   OriginalPaper Pages: 43 - 55

6. Relative toxicity of arsenite and arsenate on germination and early seedling growth of rice (Oryza sativa L.)

   • Md. Joinal Abedin
   • Andy A. Meharg

   OriginalPaper Pages: 57 - 66

7. Diffusion and seasonal dynamics of O₂ in woody debris from the Pacific Northwest, USA

   • William T. Hicks
   • Mark E. Harmon

   OriginalPaper Pages: 67 - 79

8. Do plant parasitic nematodes have differential effects on the productivity of a fast- and a slow-growing grass species?

   • B.C. Verschoor
   • R.G.M. de Goede
   • L. Brussaard

   OriginalPaper Pages: 81 - 90

9. Effect of inorganic N on the population, in vitro colonization and morphology of Acetobacter diazotrophicus (syn. Gluconacetobacter diazotrophicus)

   • Ramachandran Muthukumarasamy
   • Gopalakrishnan Revathi
   • Ponnusamy Loganathan

   OriginalPaper Pages: 91 - 102

10. Effects of planted tree fallows on soil nitrogen dynamics, above-ground and root biomass, N₂-fixation and subsequent maize crop productivity in Kenya

    • Lena Ståhl
    • Gert Nyberg
    • Roland J. Buresh

    OriginalPaper Pages: 103 - 117

11. Impact of drying and re-wetting on N, P and K dynamics in a wetland soil

    • H. Olde Venterink
    • T.E. Davidsson
    • L. Leonardson

    OriginalPaper Pages: 119 - 130