soil map units where 67A Naqilai is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Vanua Levu |
| Landscape position | Secondary floodplains and depressions in the lowlands and foothills |
| Soil parent material | river alluvium from acidic rocks |
| Slope | Flat to near level (0-1°). Smooth microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-15cm firm to friable clay. 15-52cm very firm clay. On soft clay. |
| Minimum effective rooting depth | <50cm. Water table at or about 50cm. |
| Soil pH (acidity) | 0-52cm strongly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Very low phosphorus (P) and potassium (K). |
| Soil moisture regime | aquic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Very poorly drained. |
| Susceptibility to waterlogging | Waterlogs below 50cm for up to 6 months during the period November to April. |
| Susceptibility to flooding | 1 in 25 year return period for floods depositing alluvium. 1 in 2 year return period for other floods. |
