This lecture will help you understand: Soils and agriculture


C Horizon: Slightly altered parent material



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C Horizon: Slightly altered parent material

  • R Horizon: Bedrock

    Soil characterization

    • Soil can be characterized by color and several other traits:

    • Texture

    • Structure

    • pH

    Soil texture

    • Three main categories:

    Clay = particles < 0.002 mm diameter

    Silt = particles 0.002–0.05 mm diameter

    Sand = particles 0.05–2.0 mm diameter

    Soil texture

    Soil structure

    Regional soil differences and agriculture

    • Soil and soil profiles vary from place to place, with implications for agriculture.

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