Factors affecting food security

Question 1

Physical factors 1 ~ SOIL TYPES

Answer 1

CLAY:
- heavy & acidic
- high levels of nutrients and organic matter
- small particle size
- high water retention can lead to
waterlogging.
PROBLEMS ~ poorly drained , acidity
SOLUTIONS ~ drainage pipes , add lime

SANDY:
- well drained
- light
- less acidic
PROBLEMS ~ prone to drought, leaching
SOLUTIONS~ irrigation, add clay

SILTY:
- poor organic matter and mineral content.
-small pore size means water is retained
PROBLEMS ~ moisture deficiency
SOLUTIONS ~ irrigation

LOAM:
- well aerated
- little erosion
- best for agriculture due to mix of clay, sand and silt.