4 Questions
What is the highest level of soil classification according to the USDA Soil Taxonomy?
Order
How many soil orders are included in the USDA Soil Taxonomy?
12
What is the next level of soil classification below 'Great Group' in the USDA Soil Taxonomy?
Subgroup
What distinguishes suborders from each other within the soil orders?
Soil moisture, temperature regime or other distinguishing features
Study Notes
Soil Classification According to USDA Soil Taxonomy
- The highest level of soil classification according to the USDA Soil Taxonomy is the Order.
- There are 12 soil orders included in the USDA Soil Taxonomy.
- The next level of soil classification below 'Great Group' is the Subgroup.
- Suborders within the soil orders are distinguished from each other by differences in diagnostic horizons, moisture regimes, and temperature regimes.
Learn about the classification hierarchy of soils according to the USDA Soil Taxonomy, including the highest level of soil classification known as Order. This system is based on various factors such as composition, texture, structure, color, and other physical and chemical properties.
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