Similarly there are basic differences between Podzolic soils and Spodosols. Most Podzolic soils are Spodosols, but a significant proportion are Inceptisols because a spodic horizon must be dominated more by amorphous material than a podzolic B horizon. Conversely, a few Podzolic Luvisols are Spodosols. At lower levels in the systems the differences become progressively greater. The tables that follow are not adequate for correlating either the horizon designations or the taxonomy of a given pedon as expressed in one system with those of another system.
Adequate correlation requires a knowledge of the criteria and definitions in the systems involved.
The tables have been revised from those prepared by J.S. Clayton for previous issues of the Canadian system. Revisions were required because of some changes in horizon designations and in the definitions of horizons and taxa in both the Canadian and U.S. systems. Correlation at the subgroup level is not presented. Includes gypsum, 2. Bkm Bcac or Ccac Gypsic Gypsic Asa, Bsa, Csa 3.