soil map units where Fls Falehau soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Niuatoputapu |
| Landscape position | Form on coral sand overlying limestone concentric to Hihifo soils extending to the coast. |
| Soil parent material | - |
| Slope | Flat to undulating |
| Surface outcrops | - |
| Brief soil profile description | 0-15 cm Very dark grey friable loamy sand;15-25 cm Dark grey friable loamy sand; 25-75 cm White loose sand; on Coral limestone. |
| Soil profile texture | - |
| Minimum effective rooting depth | 75 cm (lithic contact) |
| Soil pH (acidity) | Moderately alkaline to strongly alkaline |
| Salinity | - |
| Soil fertility under natural conditions | Organic carbon (C) and nitrogen (N) values low; phosphorus (P) and total phosphorus (P) are very high; sulphur (S) values medium; Base saturation (%) and calcium (Ca) very high; potassium (K) and sodium (Na) values medium. |
| Soil moisture regime | - |
| Susceptibility to drought | - |
| Soil drainage | Somewhat excessively drained |
| Susceptibility to waterlogging | - |
| Susceptibility to flooding | - |
