soil map units where 305D Umea is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Rotuma |
| Landscape position | Hilly and steep land on volcanic cones |
| Soil parent material | strongly red-weathered basaltic scoria |
| Slope | Rolling (12-15°). |
| Surface outcrops | No surface rock outcrops, few surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-6cm friable clay loam. 6-50cm firm clay loam to clay. 50-150+cm very firm clay; few strongly weathered gravels and stones |
| Minimum effective rooting depth | 75-100cm |
| Soil pH (acidity) | Slightly to moderately acid |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Potassium (K) very low, Nitrogen (N) low and Sulphur (S) |
| 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. |
