soil map units where 56 Fagapolo silty clay is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Upolo |
| Landscape position | Soils of the lowlands and foothills - moderately dissected landscapes |
| Soil parent material | from scoria aa of the Mulifanua and Salani Volcanics |
| Slope | Rolling (with some gently rolling slopes) |
| Surface outcrops | Surface not stony or bouldery. No rock on crops. |
| Brief soil profile description | - |
| Soil profile texture | 20cm slightly gritty clay. 18cm very gritty silty clay. 28cm gravelly clay. on weathered scoria |
| Minimum effective rooting depth | <80cm |
| Soil pH (acidity) | Strongly acid (pH = 5.2) |
| Salinity | Non saline |
| Soil fertility under natural conditions | Low fertility. Base saturation 2% in topsoil, nil in subsoil. Low organic calcium (C) and exchangeable potassium (K) values. |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | No dry season. Rainfall 4000-5000mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
