soil map units where 304D Vaka is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Rotuma |
| Landscape position | Hilly and steep land on volcanic cones |
| Soil parent material | weakly weathered basaltic scoria and minor basaltic ash |
| Slope | Rolling (12-15°). |
| Surface outcrops | No surface rock outcrops, few surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-20cm very friable gravelly loam. 20-42cm very friable stony loam. 42-100+cm very friable to loose gravelly and stony loamy coarse sand |
| Minimum effective rooting depth | <50cm |
| Soil pH (acidity) | Slightly acid to near neutral. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Not sampled but likely to have severe nutrient deficiences |
| Soil moisture regime | udic/perudic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Somewhat excessivly drained |
| Susceptibility to waterlogging | Never waterlogs. |
| Susceptibility to flooding | Never floods. |
