soil map units where 108F Mafua is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Rotuma |
| Landscape position | Young volcanic hill country in the lowlands and foothills |
| Soil parent material | basaltic scoria cones |
| Slope | Moderately steep (21-25°). Generally even microrelief. |
| Surface outcrops | No surface rock outcrops. Few surface stones and rare boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-35cm clay loam. 35-70cm stony sandy loam. 70-125cm+ stony very coarse sand. |
| Minimum effective rooting depth | <100cm. Weakly cemented gravels and stones at 95-110cm. |
| Soil pH (acidity) | 0-9cm moderately acid. 9-40cm slight acid. 40-125cm near neutral. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Extremely high phosphorus retention. |
| Soil moisture regime | udic/perudic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Well drained. |
| Susceptibility to waterlogging | Never waterlogs. |
| Susceptibility to flooding | Never floods. |
