soil map units where Nu Neiafu soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Vava’u |
| Landscape position | Foot slopes, valley floors and depression on reworked ash mantling raised coral terraces. |
| Soil parent material | - |
| Slope | Flat to gently undulating (0-5°) |
| Surface outcrops | - |
| Brief soil profile description | 0-30 cm Dark brown friable clay loam; 30-73 cm Dark brown firm silty clay loam; on Brown firm silty clay loam; many clay coatings. |
| Soil profile texture | - |
| Minimum effective rooting depth | 100 cm |
| Soil pH (acidity) | Topsoil near neutral, slightly acid subsoil |
| Salinity | - |
| Soil fertility under natural conditions | High Base saturation (%), exchangeable calcium (Ca), magnesium (Mg) and K; Organic carbon (C) and nitrogen (N) medium in topsoil and very low in subsoil; very low reserve potassium (K). |
| Soil moisture regime | - |
| Susceptibility to drought | - |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | - |
| Susceptibility to flooding | - |
