soil map units where Hu1 Houma soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | ‘Eua |
| Landscape position | Ash-covered tuffs or limestone on the highest surface of ‘Eua. |
| Soil parent material | - |
| Slope | Flat to easy rolling (0-5°) |
| Surface outcrops | - |
| Brief soil profile description | 0-21 cm Dusky red friable silty clay; 21-60 cm Dark reddish brown friable to firm clay; 60-150 cm Dark red firm clay; clay coatings. |
| Soil profile texture | - |
| Minimum effective rooting depth | 150 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 drained |
| Susceptibility to waterlogging | - |
| Susceptibility to flooding | - |
