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University of Idaho

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

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Entisols

Entisols are soils of recent origin. The central concept is soils developed in unconsolidated parent material with usually no genetic horizons except an A horizon. All soils that do not fit into one of the other 11 orders are Entisols. Thus, they are characterized by great diversity, both in environmental setting and land use. Many Entisols are found in steep, rocky settings. However, Entisols of large river valleys and associated shore deposits provide cropland and habitat for millions of people worldwide. Entisols are divided into five suborders: Wassents, Aquents, Psamments, Fluvents and Orthents.

Globally Entisols are the most extensive of the soil orders, occupying approximately 18 percent of the Earth's ice-free land area. In the U.S., Entisols occupy approximately 12.3 percent of the land area.

Entisols
Because Entisols are the last soil order to key out, they defined on the basis of lacking the diagnostic horizons and features associated with other soil orders. Few if any discernable horizons are typically visible. (USDA-NRCS image)

Contact

University of Idaho

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

Directions