soil map units where 40 Lefaga stony silty clay loam is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Samoa |
| Landscape position | Soils of the lowlands and foothills - slightly dissected landscapes |
| Soil parent material | from aa, scoria and pahoehoe basalt of the Le Faga Volcanics |
| Slope | Easy to strongly rolling slopes |
| Surface outcrops | Surface stones comprising vesicular aa lava. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 45cm stony clay. on very bouldery and stony silty clay |
| Minimum effective rooting depth | <70cm |
| Soil pH (acidity) | Slightly acid (pH = 6.5) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate fertility. Base saturation 60-80%. High exchangeable potassium (K), available potassium (P) and organic carbon (C). |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | Very weak dry season (1 month <60mm rainfall). Rainfall 3250-4375mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
