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Chapter 3

Chapter 3. Soil Classification and Survey. Objectives. Describe the current USDA soil classification system Explain how soil surveys are prepared and used List soil capability classes. Diagnostic horizons Families Great groups Land capability classes Land capability subclasses

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Chapter 3

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  1. Chapter 3 Soil Classification and Survey Soil Science and Management, 4E

  2. 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

  3. 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 Terms to Know Soil Science and Management, 4E

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

  5. Soil Classification Figure 3-2 Soil Science and Management, 4E

  6. Soil Classification • Soil series • Phases of soil series Soil Science and Management, 4E

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

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

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

  10. Land Capability Classes • Land capability subclasses • Soil use maps • Computer applications • Lands of the United States Soil Science and Management, 4E

  11. Land Capability Classes Figure 3-13 Soil Science and Management, 4E

  12. Land Capability Classes Figure 3-14 Soil Science and Management, 4E

  13. 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

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