16. Oxisols: Low Activity Soils

  1. S. W. Buol B.S., M.S., Ph.D.1,
  2. R. J. Southard B.S, M.S., Ph.D.2,
  3. R. C. Graham3 and
  4. P. A. McDaniel B.S., M.S., Ph.D.4

Published Online: 5 AUG 2011

DOI: 10.1002/9780470960622.ch16

Soil Genesis and Classification, Sixth Edition

Soil Genesis and Classification, Sixth Edition

How to Cite

Buol, S. W., Southard, R. J., Graham, R. C. and McDaniel, P. A. (2011) Oxisols: Low Activity Soils, in Soil Genesis and Classification, Sixth Edition, Wiley-Blackwell, Oxford, UK. doi: 10.1002/9780470960622.ch16

Author Information

  1. 1

    North Carolina State University, Raleigh, USA

  2. 2

    University of California, Davis, USA

  3. 3

    University of California, Riverside, USA

  4. 4

    University of Idaho, Moscow, USA

Publication History

  1. Published Online: 5 AUG 2011
  2. Published Print: 2 SEP 2011

ISBN Information

Print ISBN: 9780813807690

Online ISBN: 9780470960622



  • Oxisols, low activity soils - sandy loam, or finer-textured mineral soils, low apparent cation exchange capacity (CEC) clay;
  • Oxisol profiles, and low bulk density - between 1.0 and 1.3 g cm−3;
  • Oxisols, with isothermic or isohyperthermic soil temperature regimes - some Oxisols with hyperthermic, thermic or isomesic regimes;
  • Oxisols, and vegetation - tropical rain forest, scrub and thorn forest, grassland savanna;
  • Oxisols, and fluctuating water table - soil surface, localized iron concentration;
  • melanization and humification - in all Oxisols;
  • uses of Oxisols - relative to most other soils, most Oxisols chemically infertile;
  • Oxisol-dominated landscapes - level, facilitating use of large equipment;
  • suborders and great groups - in the Oxisols order;
  • Oxisols, nonsandy mineral soils - with few weatherable minerals, and low CEC


This chapter contains sections titled:

  • Setting

  • Pedogenic Processes

  • Uses of Oxisols

  • Classification of Oxisols

  • Perspective