Soil

Soil

1. Subtopic: Soil Formation

   • Functions of Soil
   • Rock Types
   • 1. Weathering and Decomposition of Rocks
     • Physical weathering
     • Chemical Weathering
     • Biological Weathering
   • 2. Factors of soil formation
     • Parent Material
     • Climate
     • Living Organisms
     • Topography
     • Time
   • 3. Soil Profiles
     • O horizon, A horizon, B horizon, C horizon, R horizon

2. Subtopic: Physical Properties of Soil

   • Soil Composition
     • Mineral matter
     • Organic matter
   • Soil texture
   • Soil Structure
   • Soil Porosity
   • Soil Air
   • Soil Water
   • Soil Colour
   • Soil Temperature

3. Subtopic: Chemical Properties

   • Cation Exchange Capacity
   • pH

4. Subtopic: Biological Properties

   • Macro-organisms
   • Micro-organisms
   • Nutrient Recycling

5. Subtopic: Soil Classification

   • Podzols
   • Brown Podzolic Soils
   • Brown Earth Soils
   • Grey-brown Podzolic Soils
   • Gleys
   • Blanket and Basic Peats

6. Subtopic: Soil Fertility and Crop Nutrition

   • Essential Elements
   • Micronutrients
   • Macronutrients
   • Soil Testing

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