soil map units where 10 Vaiola silty clay loam and gravelly loam is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Samoa |
| Landscape position | Soils of the coastlands, valley floors and their margins |
| Soil parent material | from basaltic alluvium |
| Slope | Flat and flattish valley floors |
| Surface outcrops | Surfaces locally very bouldery. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 68cm gritty clay loam. on gritty and stony clay |
| Minimum effective rooting depth | <90cm |
| Soil pH (acidity) | Moderately acid (pH = pH = 5.9) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate to low fertility. Calcium (Ca) and magnesium (Mg) values moderate. Available potassium (P) and exchangeable potassium (K) moderate to low. Base saturation, organic carbon (C) values low. |
| Soil moisture regime | - |
| Susceptibility to drought | No dry season. Rainfall 3250-5000mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
