soil map units where Ku1 Kalau soils is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | ‘Eua |
| Landscape position | Ash covering tuffs and limestone on the highest surface of ‘Eua. |
| Soil parent material | - |
| Slope | Gently undulating (3-5°) |
| Surface outcrops | - |
| Brief soil profile description | 0-18 cm Dark brown friable silty clay; 18-41 cm Yellowish red friable silty clay; 41-70 cm Red friable to firm silty clay; clay coatings. |
| Soil profile texture | - |
| Minimum effective rooting depth | 100 cm |
| Soil pH (acidity) | Slightly to moderately acid |
| Salinity | - |
| Soil fertility under natural conditions | Organic carbon (C) medium and low at depth; N low; phosphorus (P) and phosphorus (P) retention high; Base saturation (%), exchangeable calcium (Ca) and magnesium (Mg) high; sulphur (S) medium to very high; reserve potassium (K) low. |
| Soil moisture regime | - |
| Susceptibility to drought | - |
| Soil drainage | Well drained |
| Susceptibility to waterlogging | - |
| Susceptibility to flooding | - |
