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Competency Area 4: Soil health and compaction

PO 32. Understand variable susceptibility to compaction among soil types due to the following factors.

  1. Drainage
  2. Texture


A poorly drained soil will be in the liquid or plastic state for longer periods of time of the year and therefore will be more susceptible to compaction.


Soils with high clay content are highly sensitive to soil compaction. This is partly due to the  fact that they dry out slowly and this causes them to be in the liquid or plastic state for long periods of time, and partly because the clay platelets easily slide over each other causing them to pack more easily than sand or silt particles which are not plate-like.