soil map units where 29A Navua is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu |
| Landscape position | Terraces of the major floodplains in the lowlands and foothills |
| Soil parent material | river alluvium from basic and intermediate rocks |
| Slope | Flat to gently undulating (0-3°). Smooth microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-20cm silt loam. 20-33cm silty clay loam. 33-49cm silt loam. 49-64cm silty clay loam. 64-143cm clay loam. |
| Minimum effective rooting depth | <100cm. Note high seasonal water table. |
| Soil pH (acidity) | 0-93cm moderately acid. 93-143cm slightly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Very low potassium (K) throughout. |
| Soil moisture regime | aquic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Poorly drained. |
| Susceptibility to waterlogging | In normal years the water table fluctuates between 40cm (summer) and 120cm (winter). |
| Susceptibility to flooding | 1 in 2 years return period for floods comprising water only. During such events water could lie for up to 7 days. 1 in 25 year return period for floods depositing sediment. |
