soil map units where 21 Sasina stony and bouldery silty clay loam 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 | Undulating to rolling slopes |
| Surface outcrops | Very rugged surface with many angular lava blocks. |
| Brief soil profile description | - |
| Soil profile texture | 3cm stony silty clay loam. 30cm bouldery silty clay loam. on lava blocks |
| Minimum effective rooting depth | <40cm |
| Soil pH (acidity) | Slightly acid (pH = pH = 6.3) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate to high fertility. Base saturation 75-100%. High organic calcium (C) values. |
| Soil moisture regime | With weak to strong dry season (Udic moisture regime) |
| Susceptibility to drought | Weak dry season (1-2 months <100mm rainfall). Rainfall 2750-3250mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
