< Horticulture {{{1}}} 
      - Introduction
- The importance of soils
 
- Soil composition
- Inorganic components
- Organic components
- Soil flora and fauna
 
- Soil texture
- (see w:Soil texture)
 
- Soil structure
- (see w:Soil structure)
 
- Soil nutrients
- Macronutrients
 - First order macronutrients: Nitrogen (N), Phosphorus (P), Potassium (K)
- Second order macronutrients: S, Ca, Mg
 
 - Micronutrients: Fe, Mo, B, Cl, Co, Mn, Cu, Zn
 
- Soil classification
- Summary (annotated TOC)
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