SOIL TEXTURE

1

• SOIL TEXTURE
• Sand 2 - 0.02 mm
• Silt 0.02 - 0.002 mm
• Clay lt 0.002 mm
• Texture regulates
• Availability of water and nutrients
• Rate of O2 and CO2 exchange
• Sand has low surface area with large pores.
• Good aeration but rapid water drainage.
• Sand and silt chemically identical to parent
  rocks.
• Clay results from weathering of primary minerals.
• Form plate-like structures called micelles.