Soil Classification: A Binomial System for South AfricaStructure of the classification system. Definitions and concepts of diagnostic horizons. Definitions of forms and series. |
Common terms and phrases
ACRISOLS alluvium apedal B horizon argilluvic ARIDISOLS B21 horizon base status blocky Calcareous calcrete CAMBISOLS cation exchange capacity chroma Clay content clay minerals colour variegations Correlation FAO Correlation USDA cutanic character dark coloured defined developed diagnostic horizons diagnostic topsoil horizon Eutrophic example FERRALSOLS ferricrete ferrihumic G horizon gleycutanic gleyed Grade of sand grey hard plinthic hardpan horizon FAO horizon horizon HUMIC illuviation INCEPTISOLS ironpan layer less Lithic lithocutanic LUVISOLS master horizons material not specified medium coarse melanic moist MOLLISOLS mottles neocutanic Non-calcareous occurs OCHRIC organic matter ORTHIC overlying oxides OXISOLS Pachic parent material particles pedocutanic peds PHAEOZEMS plinthic B horizon prismacutanic properties red apedal red structured regic regic sands saprolite sesquioxides smectites sodic sodium soft plinthic soil classification soil forms soil map spodic stratified alluvium subsoil surface texture topsoil Typic ULTISOLS unconsolidated material Underlying material usually values vertic horizons vertical yellow-brown apedal