soil map units where 48H Salailua hill soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Samoa |
| Landscape position | Soils of the lowlands and foothills - slightly dissected landscapes |
| Soil parent material | from mixed aa and pahoehoe basalt of the Mulifanua Volcanics |
| Slope | Moderately steep slopes |
| Surface outcrops | Many stones and boulders on the surface. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 18cm bouldery clay. on mainly boulders |
| Minimum effective rooting depth | <20cm |
| Soil pH (acidity) | Slightly acid (pH = 6.0) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate fertility. Base saturation 78% topsoil, 49 % subsoil. Moderate organic calcium (C) throughout. Exchangeable potassium (K) moderate and low in subsoil. |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | No dry season. Rainfall 4375-5000mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
