soil map units where 81 Sili stony loam is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Savaii |
| Landscape position | Soils of the uplands - slightly dissected landscapes |
| Soil parent material | from aa, scoria and pahoehoe basalt of the Mulifanua Volcanics |
| Slope | Undulating to strongly rolling slopes |
| Surface outcrops | Surface rarely bouldery. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 10cm fibrous peat. 10cm peaty gravelly silt loam. 35cm silty clay loam. on stony silty clay |
| Minimum effective rooting depth | <90cm |
| Soil pH (acidity) | Strongly acid (pH = 5.2) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Low fertility. Base saturation 20-40% in topsoil. Exchangeable potassium (K) low. |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | No dry months. Rainfall 6250mm. |
| Soil drainage | Moderately well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
