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- USDA soil classification involves a hierarchy of six levels: Order, Suborder, Great Group, Subgroup, Family, and Series12. The major soil texture classifications defined by the USDA include sand, loamy sand, sandy loam, loam, silt loam, silt, sandy clay loam, clay loam, silty clay loam, sandy clay, silty clay, and clay3. Some examples of USDA soil orders and their major characteristics are:
- Alfisols: Similar to Ultisols but less acidic and more fertile.
- Aridisols: Found in arid regions.
- Gelisols: Associated with permafrost.
- Inceptisols: Young soils with minimal horizon development.
- Oxisols: Highly weathered tropical soils.
- Ultisols: Highly weathered, acidic soils4.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.USDA soil taxonomy (ST) developed by the 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.en.wikipedia.org/wiki/USDA_soil_taxonomySoil taxonomic classifications reflect the dominant Soil Forming Factors active during soil formation at a particular location. The USDA system of Soil Taxonomy (soil naming) consists of a hierarchy of six levels. These levels, in order from most general to most specific, are: Order Suborder Great Group Subgroup familypassel2.unl.edu/view/lesson/2eafec8dd762/2The United States Department of Agriculture defines twelve major soil texture classifications (sand, loamy sand, sandy loam, loam, silt loam, silt, sandy clay loam, clay loam, silty clay loam, sandy clay, silty clay, and clay). Soil textures are classified by the fractions of sand, silt, and clay in a soil.stormwater.pca.state.mn.us/index.php?title=Soil_cl…www.worldatlas.com/articles/usda-soil-taxonomy-s… - People also ask
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Keys to Soil Taxonomy-13th Edition provides the taxonomic keys necessary for the classification of soils by Soil Scientists and others interested in using the USDA system to classify a soil. This publication is available in PDF format.
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