soil map units where 99A Kirikiri is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Rotuma |
| Landscape position | Young volcanic hill country in the lowlands and foothills |
| Soil parent material | young aa lava |
| Slope | Flat to gently undulating (0-3°). Uneven microrelief due to surface boulders and protruding outcrops. |
| Surface outcrops | Surface rock outcrops cover 10% of area. Surface boulders cover 5-10% of the area. |
| Brief soil profile description | - |
| Soil profile texture | 0-22cm stony silt loam. 22-50cm stony loam. 50-122cm+ bouldery sandy loam. |
| Minimum effective rooting depth | <100cm. Boulders abundant below 50cm. |
| Soil pH (acidity) | 0-22cm slightly acid. 22-122cm near neutral. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Potassium (K) very low below 22cm. Very high phosphorus retention. |
| Soil moisture regime | udic/perudic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Somewhat excessively drained. |
| Susceptibility to waterlogging | Never waterlogs. |
| Susceptibility to flooding | Never floods. |
