soil map units where 19a Falealupo bouldery silty clay loam, peaty phase is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Savaii |
| Landscape position | Soils of the lowlands and foothills - very slightly dissected landscapes |
| Soil parent material | from mainly pahoehoe basalt of the Puapua Volcanics |
| Slope | Flattish to undulating lava sheet |
| Surface outcrops | 50% surface area bare lava. |
| Brief soil profile description | - |
| Soil profile texture | 8cm very fibrous loamy peat. 3cm sandy (peaty) loam. on vesicular basalt lava |
| Minimum effective rooting depth | <20cm |
| Soil pH (acidity) | Slightly alkaline (pH = pH = 7.3) |
| Salinity | Non saline |
| Soil fertility under natural conditions | High exchangeable magnesium (Mg) potassium (K) values and other elements from sea spray otherwise similar to 19. |
| Soil moisture regime | With weak to strong dry season (Udic moisture regime) |
| Susceptibility to drought | Moderate to strong dry season (3 months <60mm rainfall). Rainfall 2125-2250mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
