soil map units where 50 Vini 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 calcereous lithic tuffs of the Vini Volcanics |
| Slope | Rolling and easy rolling slopes |
| Surface outcrops | Surface free from stones and boulders. No rock outcrops. |
| Brief soil profile description | - |
| Soil profile texture | 46cm clay. on rubbly clay with vitric tuff fragments |
| Minimum effective rooting depth | 100cm |
| Soil pH (acidity) | Slightly acid (pH = 6.3) |
| Salinity | Non saline |
| Soil fertility under natural conditions | High fertility. Base saturation 100%. Moderate values for exchangeable magnesium (Mg), calcium (Ca) and potassium (K), and available phosphorus (P). |
| Soil moisture regime | Without dry season (Perudic moisture regime) |
| Susceptibility to drought | Weak to moderate dry season (1-2 months <100mm rainfall). Rainfall 2500-3500mm. |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | Never waterlogs |
| Susceptibility to flooding | Never floods |
