INDEX PROPERTIS OF SOIL

1. Soil color
2. Soil structure
3. Texture
4. Particle shape
5. Grain specific gravity
6. Water content
7. In-situ unit weight
8. Density index
9. Particle size distribution
1. Sieve analysis
2. Hydrometer analysis - Sedimentation
10.Consistency limits

1. Soil color
• White -> Red – coloring oxides of Fe , Mn
• Fe – red,brown, yellow
• Mn – Black
• Pyrite – Green / blue
• No compounds – Grey / White
• ↑the organic matter, ↑ the color
• Dark color -> Lighter color when oven drying
due to change in moisture content
• Clays are darker than sand/silt -> water
retention

3. Soil texture

4. Particle shape

Particle size distribution
Sieve analysis:

1. Soil color
2. Soil structure
3. Texture
4. Particle shape
5. Grain specific gravity
6. Water content
7. In-situ unit weight
8. Density index
9. Particle size distribution
1. Sieve analysis
2. Hydrometer analysis - Sedimentation
10.Consistency limits