Keys to Soil Taxonomy

The Wayback Machine - https://web.archive.org/web/19971118024043/http://www.statlab.iastate.edu:80/soils/keytax/

Keys to Soil Taxonomy

by Soil Survey Staff

United States Department of Agriculture
Natural Resources Conservation Service

Seventh Edition, 1996

Printed copy available

Foreword
Chapter 1: The Soil That We Classify, and Buried Soils
Chapter 2: Horizons and Properties Diagnostic for the Higher Categories: Mineral Soils
Chapter 3: Horizons and Properties Diagnostic for the Higher Categories: Organic Soils
Chapter 4: Identification of the Taxonomic Class of a Soil (Key To Soil Orders)
Chapter 5: Alfisols
Chapter 6: Andisols
Chapter 7: Aridisols
Chapter 8: Entisols
Chapter 9: Histosols
Chapter 10: Inceptisols
Chapter 11: Mollisols
Chapter 12: Oxisols
Chapter 13: Spodosols
Chapter 14: Ultisols
Chapter 15: Vertisols
Chapter 16: Family and Series Differentiae and Names
Appendix A: Designations for Horizons and Layers
Appendix B: SI Unit Conversion Table
Appendix C: Figure 2. Textural Triangle
Index
Equal Opportunity Statement

Special thanks goes to Ron Bauer, retired from the NRCS,
for his diligent work in preparing these Keys to Soil Taxonomy in HTML format.

WWW access developed in cooperation with the Statistical Laboratory at Iowa State University.
http://www.statlab.iastate.edu/soils/keytax
April 21, 1997

Oct	NOV	Jan
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1996	1997	1999

Keys to Soil Taxonomy

TABLE OF CONTENTS