soil map units where 54H Mulimauga hill 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 | Strongly rolling to moderately steep slopes |
| Surface outcrops | Surface often gravelly - rarely bouldery. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 15cm slightly gravelly silty clay. 35cm gritty and gravelly clay. 50cm very gravelly clay. on weathering scoria |
| 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 |
