1. Wetland rice soils as sources and sinks of methane: a review and prospects for research

   • S. Kumaraswamy
   • Arun Kumar Rath
   • N. Sethunathan

   REVIEW ARTICLE Pages: 449 - 461

2. Nutrient availability of composted and noncomposted residues in a Patagonian Xeric Mollisol

   • F. Laos
   • Patricia Satti
   • Susana Moyano

   ORIGINAL PAPER Pages: 462 - 469

3. Long-term winter cover cropping effects on corn (Zea mays L.) production and soil nitrogen availability

   • S. Kuo
   • E. J. Jellum

   ORIGINAL PAPER Pages: 470 - 477

4. Utilization of waste office paper to reduce nitrate leaching into the Northern Guam aquifer

   • P. P. Motavalli
   • H. Discekici

   ORIGINAL PAPER Pages: 478 - 483

5. Energy content decrease and viable-not-culturable status induced by oxygen limitation coupled to the presence of nitrogen oxides in Rhizobium "hedysari"

   • A. Toffanin
   • M. Basaglia
   • S. Casella

   ORIGINAL PAPER Pages: 484 - 488

6. Isolation by isoelectric focusing of humic-urease complexes from earthworm (Eisenia fetida)-processed sewage sludges

   • E. Benítez
   • R. Nogales
   • B. Ceccanti

   ORIGINAL PAPER Pages: 489 - 493

7. Evolution of burrow systems after the accidental introduction of a new earthworm species into a Swiss pre-alpine meadow

   • Y. Capowiez
   • A. Pierret
   • L. Belzunces

   ORIGINAL PAPER Pages: 494 - 500

8. Fallow residue management effects on upland rice in three agroecological zones of West Africa

   • René Akanvou
   • M. Becker
   • Amadou Toure

   ORIGINAL PAPER Pages: 501 - 507

9. High performance liquid chromatography studies on the polysaccharides in the walls of the mounds of two species of termite in Senegal, Cubitermes oculatus and Macrotermes subhyalinus: their origin and contribution to structural stability

   • D. Contour-Ansel
   • E. Garnier-Sillam
   • V. Croci

   ORIGINAL PAPER Pages: 508 - 516

10. Mechanisms of fixation and release of ammonium in paddy soils after flooding II. Effect of transformation of nitrogen forms on ammonium fixation

    • Y. Zhang
    • H. W. Scherer

    ORIGINAL PAPER Pages: 517 - 521

11. Cobalt reduces nitrate inhibition of nodulation in mungbean (Vigna radiata)

    • Veena Jain
    • H. S. Nainawatee

    ORIGINAL PAPER Pages: 522 - 524

12. Effect of maize root mucilage on phosphate adsorption and exchangeability on a synthetic ferrihydrite

    • Alain Gaume
    • P.G. Weidler
    • E. Frossard

    ORIGINAL PAPER Pages: 525 - 532