soil map units where 30A Tokotoko 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 near level (0-1°). Slight hummocky microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones and boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-17cm silty clay loam. 17-37cm clay loam. 37-134cm clay. |
| Minimum effective rooting depth | <75cm. Note high seasonal water table. |
| Soil pH (acidity) | 0-37cm moderately acid. 37-134cm slightly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Very low potassium (K) below 17cm. |
| Soil moisture regime | aquic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Very poorly drained. |
| Susceptibility to waterlogging | In normal years the water table fluctuates between 15cm (summer) and 100cm (winter). |
| Susceptibility to flooding | Due to high water tables in summer months surface flooding may occur on 3-4 occasions lying for up to 15 days during the period November to April. 1 in 25 year return period for floods depositing sediment. |
