soil map units where HuH Houma hill soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | ‘Eua |
| Landscape position | Ash-covered tuffs or limestone of the highest surface of ‘Eua. |
| Soil parent material | - |
| Slope | Mod. steep to steep (12-30°) |
| Surface outcrops | - |
| Brief soil profile description | 0-60 cm Dark reddish brown friable silty clay; 60-75 cm Dark red friable to firm clay; clay coatings. |
| Soil profile texture | - |
| Minimum effective rooting depth | 75 cm |
| Soil pH (acidity) | Moderately acid |
| Salinity | - |
| Soil fertility under natural conditions | Organic carbon (C) medium and low at depth; nitrogen (N) and phosphorus (P) low; phosphorus (P) retention high; Base saturation (%), exchangeable calcium (Ca) and magnesium (Mg) high; reserve potassium (K) low. |
| Soil moisture regime | - |
| Susceptibility to drought | - |
| Soil drainage | Well to excessively drained |
| Susceptibility to waterlogging | - |
| Susceptibility to flooding | - |
