soil map units where Uh Uiha soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Ha’apai |
| Landscape position | Young ash over older ash or limestone on Uiha Island. |
| Soil parent material | - |
| Slope | Gently undulating (3°) |
| Surface outcrops | - |
| Brief soil profile description | 0-25 cm Dark reddish brown friable clay loam; 25-60 cm Dark reddish brown friable to firm with lapilli; 60-90 cm Dark reddish brown friable sandy clay loam; 90+cm Dark reddish brown firm sandy loam with many lapilli. |
| Soil profile texture | - |
| Minimum effective rooting depth | 100 cm |
| Soil pH (acidity) | Near neutral to slightly alkaline |
| Salinity | - |
| Soil fertility under natural conditions | Very high Base saturation (%), calcium (Ca), magnesium (Mg) and sodium (Na) values; medium phosphorus (P) and phosphorus (P) retention; low organic carbon (C) and Nitrogen (N). High reserve magnesium (Mg) and low reserve potassium (K). Low sulphur (S). |
| Soil moisture regime | - |
| Susceptibility to drought | - |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | - |
| Susceptibility to flooding | - |
