Losses due to wind erosion
- Drifting of dust particles:
- The sand particles are blown by wind and deposited on good fertile land cover up the soil.
- Grasses, trees, shrubs and hedges may be smothered or buried.
- Railways and roads are sometimes blocked by drifting sand or soil and this incurs assed maintenance costs.
- Damage to crops:
- Crop damage, particularly in the seedling stage, serious stand and subsequent yield and quality
- losses are incurred and in the extreme, tender seedlings may be completely killed.
- Often, sufficient soil is removed to expose the plant roots or ungerminated seed and this results in complete crop failure.
- Covering of stabilized crops or pasturage by drifting soil is another result.
- Soil loss:
- Fertile top soil is lost by wind erosion. Finer soil fractions (silt, clay and organic matter) are removed and carried away by the wind, leaving the coarser fractions behind.
- This sorting action not only removes the most important material from the standpoint of productivity and water retention, but also leaves a more sandy and thus a more erodible soil than the original.