soil map units where 20 Pulea bouldery silt 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 easy rolling slopes |
| Surface outcrops | Rough bouldery surfaces. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 25cm very bouldery silty clay loam. 20cm bouldery and stony silty clay loam. on vesicular basalt lava |
| Minimum effective rooting depth | <45cm |
| Soil pH (acidity) | Slightly acid (pH = pH = 6.0) |
| Salinity | Non saline |
| Soil fertility under natural conditions | High fertility. Base saturation 95%. High exchangeable calcium (Ca), magnesium (Mg) values. Exchangeable potassium (K) and available potassium (P) moderate values. |
| Soil moisture regime | With weak to strong dry season (Udic moisture regime) |
| Susceptibility to drought | Moderate dry season (2-3 months <100mm rainfall). Rainfall 2250-2750mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
