soil map units where 12 Ma'asina stony clay is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Samoa |
| Landscape position | Soils of the coastlands, valley floors and their margins |
| Soil parent material | from basic colluvium |
| Slope | Undulating to rolling slopes |
| Surface outcrops | Surface stony. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 30cm clay. 30cm stony clay. on stony clay with lumps of basaltic rock |
| Minimum effective rooting depth | <100cm |
| Soil pH (acidity) | Moderately acid (pH = pH = 5.8) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Moderate to low fertility. High exchangeable potassium (K) and organic calcium (C) values. |
| Soil moisture regime | - |
| Susceptibility to drought | Very weak to no dry season. Rainfall 3000-4000mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
