soil map units where 54S Mulimauga steepland soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Samoa |
| Landscape position | Soils of the lowlands and foothills - moderately dissected landscapes |
| Soil parent material | from scoria aa of the Mulifanua and Salani Volcanics |
| Slope | Steep to very steep slopes |
| Surface outcrops | Surface usually bouldery. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 10cm gritty silty clay. 55cm very gravelly clay with boulders. on weathering scoria and black sand |
| Minimum effective rooting depth | >100cm |
| Soil pH (acidity) | Slightly acid (pH = 6.1) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate fertility. Base saturation 40-50%. Exchangeable potassium (K) moderate, very low in subsoil. |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | Very weak dry season (<1 month <100mm rainfall). Rainfall 2750-3500mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
