1. Stabilization mechanisms of soil organic matter: Implications for C-saturation of soils

   • J. Six
   • R. T. Conant
   • K. Paustian

   OriginalPaper Pages: 155 - 176

2. Are penetrometer measurements useful in predicting emergence of sugar beet (Beta vulgaris L.) seedlings through a crust?

   • J.-N. Aubertot
   • C. Dürr
   • Y. Duval

   OriginalPaper Pages: 177 - 186

3. Surface colonization of lodgepole pine (Pinus contorta var. latifolia [Dougl. Engelm.]) roots by Pseudomonas fluorescens and Paenibacillus polymyxa under gnotobiotic conditions

   • Elizabeth Bent
   • Colette Breuil
   • Christopher P. Chanway

   OriginalPaper Pages: 187 - 196

4. Monitoring of water from the underground to the tree: first results with a new sap extractor on a riparian woodland

   • Luc Lambs
   • Marie Berthelot

   OriginalPaper Pages: 197 - 207

5. Spatial and temporal variation in citrate and malate exudation and tissue concentration as affected by P stress in roots of white lupin

   • Enrique Peñaloza
   • Luis J. Corcuera
   • José Martinez

   OriginalPaper Pages: 209 - 221

6. The contribution of nitrogen by promiscuous soybeans to maize based cropping the moist savanna of Nigeria

   • N. Sanginga
   • J. Okogun
   • K. Dashiell

   OriginalPaper Pages: 223 - 231

7. Influence of soil depth on the decomposition of Bouteloua gracilis roots in the shortgrass steppe

   • Richard A. Gill
   • Ingrid C. Burke

   OriginalPaper Pages: 233 - 242

8. High temperatures are not responsible for lack of infection of citrus roots by Phytophthora citrophthora during the summer, but suppressive soil microorganisms may inhibit infection by P. citrophthora

   • Monica F. Dirac
   • John A. Menge

   OriginalPaper Pages: 243 - 249

9. Uptake and transport of foliar applied zinc (⁶⁵Zn) in bread and durum wheat cultivars differing in zinc efficiency

   • B. Erenoglu
   • M. Nikolic
   • I. Cakmak

   OriginalPaper Pages: 251 - 257

10. The fate of carbon and fertiliser nitrogen when dryland wheat is grown in monoliths of duplex soil

    • B.J. Atwell
    • I. R. P. Fillery
    • A. J. M. Smucker

    OriginalPaper Pages: 259 - 269

11. Root bacteria from nematicidal plants and their biocontrol potential against trichodorid nematodes in potato

    • V. Insunza
    • S. Alström
    • K. B. Eriksson

    OriginalPaper Pages: 271 - 278

12. Spatial patterns of surface soil properties and vegetation in a Mediterranean semi-arid steppe

    • Fernando T. Maestre
    • Jordi Cortina

    OriginalPaper Pages: 279 - 291