GEODERMA Geoderma 92 (1999) 257 Contents Volume 92, 1999 Research Papers Pedogenesis by upbuilding in an extreme leaching and weathering environment, and slow loess accretion, south Westland, New Zealand P.C. Almond and P.J. Tonkin Markov-chain simulation of soil textural profiles W. Li, B. Li and Y. Shi Comparison of 2D and 3D images of fractures in a Vertisol E. Moreau, B. Velde and F. Terribile Minimisation of organic matter disruption during particle-size fractionation of grassland epipedons W. Amelung and W. Zech Soil management system effects on size fractionated humic substances E.H. Novotny, W.E.H. Blum, M.H. Gerzabek and A.S. Mangrich Chemical and mineralogical properties of soils in southeastern Nigeria in relation to aggregate stability C.A. Igwe, F.O.R. Akamigbo and J.S.C. Mbagwu Impact of non-drained irrigated rice cropping on soil salinization in the Senegal River Delta J. Ceuppens and M.C.S. Wopereis Soil—landform relationships at within-field scales: an investigation using continuous classification Nonreactive solute transport in variously structured soil materials as determined by laboratory-based time domain reflectometry (TDR) V. Comegna, A. Coppola and A. Sommella Comparing different methods for estimating the soil moisture supply capacity of a soil series subjected to different types of management J. Bouma and P. Droogers Spatially variable soil hydraulic properties for simulation of field-scale solute transport in the unsaturated zone T.J. Kelleners, J. Beekma and M.R. Chaudhry Modeling of soil deformation and water flow in a swelling soil D.J. Kim, R. Angulo Jaramillo, M. Vauclin, J. Feyen and S.I. Choi Temporal dynamics of microbial biomass- and mineral-N in legume amended soils from a spatially variable landscape V. Rasiah and B.D. Kay Contents Volume 92, 1999