soil map units where 85D Vuna is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Taveuni |
| Landscape position | Young volcanic hill country in the lowlands and foothills |
| Soil parent material | young aa lava |
| Slope | Rolling (12-15°). Very uneven microrelief with rock outcrops and surface boulders. |
| Surface outcrops | Surface rock outcrops cover 20% of the surface. Boulders occupy 5-10% of the surface. |
| Brief soil profile description | - |
| Soil profile texture | 0-20cm very friable stony silty clay loam. 20-53cm very friable loamy fine sand. On broken bouldery basalt lava. |
| Minimum effective rooting depth | <55cm |
| Soil pH (acidity) | 0-53cm slightly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Low phosphorus (P) and potassium (K). Very high phosphate fixation properties. |
| 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. |
