soil map units where 77 Samoa gravelly bouldery loam 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 | Undulating, easy rolling and rolling slopes |
| Surface outcrops | Surface mainly bouldery and stony. |
| Brief soil profile description | - |
| Soil profile texture | 8cm fibrous peat. 10cm bouldery gravelly loam. 25cm very bouldery peaty loam. on boulders |
| Minimum effective rooting depth | <50cm |
| Soil pH (acidity) | Strongly acid (pH = 5.2) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Very low fertility |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | No dry season. Rainfall 6250mm. |
| Soil drainage | Moderately well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
