soil map units where 76S Mafane steepland soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Savaii |
| Landscape position | Soils of the uplands - very slightly dissected landscapes |
| Soil parent material | from scoria and pahoehoe basalt of the Puapua Volcanics |
| Slope | Moderately steep, steep and very steep sides of volcanic cones |
| Surface outcrops | Surface slightly stony and bouldery in part. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 3cm peaty silt loam. 48cm slightly gravelly gritty silty clay loam. 40cm gravelly loam. on weakly weathered scoria |
| Minimum effective rooting depth | <90cm |
| Soil pH (acidity) | Strongly acid (pH = 5.2) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate fertility. Base saturation 80% topsoil, 25% in subsoil. Exchangeable potassium (K) and organic calcium (C) values high in topsoil and low in subsoil. |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | No dry season. Rainfall >5000mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
