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Learn about the many reasons the University of Idaho could be a perfect fit for you. Schedule Your Visit

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Homecoming Oct. 1-7

Join other Vandal families for a week of celebration and Vandal traditions. View Calendar

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U of I Retirees Association

UIRA has a membership of nearly 500 from every part of the University. Learn More

Contact

Department of Soil and Water Systems

Physical Address:
E. J. Iddings Agricultural Science Laboratory, Rm 242
606 S Rayburn St

Mailing Address:
875 Perimeter Drive MS 2340
Moscow, ID 83844-2340

Phone: 208-885-0111

Email: cals-sws@uidaho.edu

Web: uidaho.edu/cals/sws

Directions

Twelve Soil Orders

Soil taxonomy remains one of the most widely used soil classification systems in the world placing soils in one of 12 categories known as orders. We have put together a collection of information and images to illustrate the distribution, properties, ecological significance and use of these 12 soil orders.

The second edition of Soil Taxonomy, A Basic System of Soil Classification for Making and Interpreting Soil Surveys is available for download or order a printed copy through the Natural Resources Conservation Service, United States Department of Agriculture. 

Global soil regions of the twelve soil orders
Click on image to view map.

Contact

Department of Soil and Water Systems

Physical Address:
E. J. Iddings Agricultural Science Laboratory, Rm 242
606 S Rayburn St

Mailing Address:
875 Perimeter Drive MS 2340
Moscow, ID 83844-2340

Phone: 208-885-0111

Email: cals-sws@uidaho.edu

Web: uidaho.edu/cals/sws

Directions

Contact

Department of Soil and Water Systems

Physical Address:
E. J. Iddings Agricultural Science Laboratory, Rm 242
606 S Rayburn St

Mailing Address:
875 Perimeter Drive MS 2340
Moscow, ID 83844-2340

Phone: 208-885-0111

Email: cals-sws@uidaho.edu

Web: uidaho.edu/cals/sws

Directions