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USDA Soil Taxonomy developed by United States Department of Agriculture and the National Cooperative Soil Survey provides an elaborate classification of soil types according to several parameters (most commonly their properties) and in several levels: Order, Suborder, Great Group, Subgroup, Family, and Series. The National Cooperative Soil Survey (NCSS in the United States is a nationwide partnership of federal regional state and local agencies and institutions Soil classification deals with the systematic categorization of Soils based on distinguishing characteristics as well as criteria that dictate choices in use In terms of Soil texture, soil type usually refers to the different sizes of Mineral particles in a particular sample Soil series as established by the National Cooperative Soil Survey are soils that are grouped together because of their similar Pedogenesis, Soil chemistry

Contents

Example of classification of a soil type

Order: Entisols

Suborder: Fluvents
Great Group: Torrifluvents
Subgroup: Typic Torrifluvents
Family: Fine-loamy, mixed, superactive, calcareous, Typic Torrifluvents
Series: Jocity, Youngston.

Another Example

Order: Alfisols

Suborder: Xeralfs
Great Group: Durixeralfs
Subgroup: Abruptic Durixeralfs
Family: Fine, Mixed, Active, thermic Abruptic Durixeralfs
Series: San Joaquin (soil)

Link to Official Series Description: ftp://ftp-fc.sc.egov.usda.gov/NSSC/StateSoil_Profiles/ca_soil.pdf

Orders

See also

External links

Alfisols are a soil order in USDA soil taxonomy. Alfisols form in semiarid to humid areas typically under a Hardwood forest cover San Joaquin is an officially designated state Insignia, the State Soil of the U Alfisols are a soil order in USDA soil taxonomy. Alfisols form in semiarid to humid areas typically under a Hardwood forest cover In USA soil taxonomy, Andisols are Soils formed in Volcanic ash and defined as soils containing high proportions of glass and amorphous colloidal materials Aridisols (or desert soils) are a soil order in USA soil taxonomy. In USA soil taxonomy, Entisols are defined as soils that do not show any profile development Gelisols are an order in USDA soil taxonomy. They are Soils of very cold climates which are defined as containing Permafrost within two metres of the In both the FAO soil classification and the USA soil taxonomy, a histosol is a Soil comprised primarily of Organic materials They are defined Inceptisols are a soil order in USDA soil taxonomy. They form quickly through alteration of parent material Mollisols are a soil order in USA soil taxonomy. Mollisols form in semi-arid to semi-humid areas typically under a Grassland cover Oxisols are an order in USDA soil taxonomy, best known for their occurrence in Tropical Rain forest, 15-25 degrees north and south of the Equator In Soil science, Podsol (also spelled Podzol, or known as Spodosol) are the typical Soils of Coniferous, or Boreal forests Ultisols are an order in USDA soil taxonomy. They are defined as mineral soils which contain no Calcareous material anywhere within the soil, have In both the FAO and USA soil taxonomy, a vertisol is a soil in which there is a high content of Expansive clay known as Montmorillonite The Food and Agriculture Organization of the United Nations (FAO developed a supra-national classification also called World Soil Classification, which offers useful generalizations The International Committee on Anthropogenic Soils ( ICOMANTH) defines its mission as follows The International Committee on Anthropogenic Soils ( ICOMANTH) defines its mission as follows Soil classification deals with the systematic categorization of Soils based on distinguishing characteristics as well as criteria that dictate choices in use The 1938 USDA soil taxonomy was a Soil classification system adopted by the United States Department of Agriculture, now obsolete
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