IB ESS 5.1.12 Soil texture
IB ESS 5.1.12 Soil texture
Practise using sand, silt, clay and humus evidence to classify soil texture and explain why loam supports crop growth and vegetation cover.
How this is tested
- use percentage composition of clay, silt and sand to state the correct soil texture
- explain why loam supports crop growth through drainage, aeration and water retention
- interpret soil data or a figure linking texture, vegetation cover and evaporation