soil map units where Na2 Nuku’alofa soils, sandy loam phase is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Tongatapu |
| Landscape position | Beach ridge. |
| Soil parent material | - |
| Slope | Flat to gently undulating (0-3°) |
| Surface outcrops | - |
| Brief soil profile description | 0-45 cm Black very friable sandy loam; 45-80 cm Very pale brown friable coarse sand; on Pale yellow sand. |
| Soil profile texture | - |
| Minimum effective rooting depth | 100 cm+ |
| Soil pH (acidity) | Moderately alkaline |
| Salinity | - |
| Soil fertility under natural conditions | Medium to high in organic carbon (C), total nitrogen (N) and phosphorus (P). High phosphorus (P) retention. |
| Soil moisture regime | - |
| Susceptibility to drought | Moderate limitations of soil moisture deficit |
| Soil drainage | Somewhat excessively drained |
| Susceptibility to waterlogging | - |
| Susceptibility to flooding | - |
