1. Soil Classification and Survey
Chapter 3
Soil Classification
and Survey
Soil Science and Management, 4E
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2. Soil Science and Management, 4E
Objectives
Describe the current USDA soil classification system
Explain how soil surveys are prepared and used
List soil capability classes
Soil Science and Management, 4E
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3. Soil Science and Management, 4E
Terms to Know
Diagnostic horizons
Families
Great groups
Land capability classes
Land capability subclasses
Mapping units
Phases
Soil association
Soil classification
Soil order
Soil series
Soil survey
Soil taxonomy
Subgroups
Suborders
Soil Science and Management, 4E
T3-3

4. Soil Science and Management, 4E
Soil Classification
Figure 3-1
Soil Science and Management, 4E
T3-4

5. Soil Science and Management, 4E
Soil Classification
Figure 3-2
Soil Science and Management, 4E
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6. Soil Science and Management, 4E
Soil Classification
Soil series
Phases of soil series
Soil Science and Management, 4E
T3-6

7. Soil Science and Management, 4E
Soil Classification
Field mapping
Figure 3-6
Soil Science and Management, 4E
T3-7

8. Soil Science and Management, 4E
Soil Classification
Mapping units
Soil survey reports
Survey report uses
Field maps
Soil Science and Management, 4E
T3-8

9. Land Capability Classes
Figure 3-7
Soil Science and Management, 4E
T3-9

10. Land Capability Classes
Land capability subclasses
Soil use maps
Computer applications
Lands of the United States
Soil Science and Management, 4E
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11. Land Capability Classes
Figure 3-13
Soil Science and Management, 4E
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12. Land Capability Classes
Figure 3-14
Soil Science and Management, 4E
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13. Soil Science and Management, 4E
Summary
Soil classified by soil properties and profiles
Six levels
Level important to growers is soil series and its subdivision—the soil phase
Soil maps prepared on classification system
Land placed into a capability classes
Classes determine needs of soil
Soil Science and Management, 4E
T3-13