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Guide for Placing Soils in Capability Units
Capability Unit |
Principal Soil Property or Limitation |
1 |
Potential or actual wind or water erosion hazard. |
2 |
Drainage or overflow hazard. (swp or poorly drained, flooded or ponded) |
3 |
Slowly or very slowly permeable subsoils or substrata. |
4 |
Coarse or gravelly textures. |
5 |
Fine or very fine textures. |
6 |
Salinity or alkali, sufficient to constitute a continuing limitation or hazard. |
7 |
Stones, cobbles, or rocks sufficient to interfere with tillage. |
8 |
Hardpan or hard unweathered bedrock within the root zone. |
9 |
Low inherent fertility, associated with strong acidity, low calcium- |
10 |
High organic matter content - peats and mucks. |
11 |
Coarse sandy or very gravelly substrata limiting to root penetration and moisture retention. |