Soil Science

7.

Soil Classification and Mapping

7.1.

Purpose of Soil Classification

7.1.1.

Organization of Soil Knowledge

7.1.2.

Communication Among Scientists

7.1.3.

Land Use Planning

7.2.

Major Soil Classification Systems

7.2.1.

USDA Soil Taxonomy

7.2.1.1.

Diagnostic Surface Horizons (Epipedons)

7.2.1.1.1.

7.2.1.1.2.

7.2.1.1.3.

7.2.1.1.4.

7.2.1.2.

Diagnostic Subsurface Horizons

7.2.1.2.1.

7.2.1.2.2.

7.2.1.2.3.

7.2.1.2.4.

7.2.1.3.

Hierarchical Categories

7.2.1.3.1.

7.2.1.3.2.

7.2.1.3.3.

7.2.1.3.4.

7.2.1.3.5.

7.2.1.3.6.

7.2.2.

World Reference Base for Soil Resources (WRB)

7.2.2.1.

Reference Soil Groups

7.2.2.2.

Diagnostic Horizons and Properties

7.3.

Soil Survey and Mapping

7.3.1.

Concept of the Pedon

7.3.2.

Concept of the Polypedon

7.3.3.

Soil Mapping Units

7.3.3.1.

7.3.3.2.

7.3.3.3.

7.3.4.

Tools and Techniques

7.3.4.1.

7.3.4.2.

7.3.4.3.

Geographic Information Systems (GIS)

7.3.4.4.

Global Positioning Systems (GPS)

7.3.5.

Interpreting a Soil Survey Report

7.3.5.1.

7.3.5.2.

Soil Descriptions

7.3.5.3.

Land Use Interpretations

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8. Soil Fertility and Plant Nutrition