soil map units where 79H Salega hill soils 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 | Mainly steep to strongly rolling |
| Surface outcrops | Surface usually very bouldery. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 25cm bouldery silty clay loam. 20cm very bouldery silty clay loam. on weathered boulders |
| Minimum effective rooting depth | <50cm |
| Soil pH (acidity) | Moderately acid (pH = 5.8) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Low fertility. Base saturation only 16% in topsoil. Exchangeable potassium (K) and organic calcium (C) values moderate to 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 |
