soil map units where 51A Bucaisau 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 basic and intermediate rocks |
| Slope | Level or near level (0-1°). |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-28cm firm sticky clay. 28-50cm soft sticky clay. >50cm soft sticky massive clay. |
| Minimum effective rooting depth | <50cm. Note high seasonal water table. |
| Soil pH (acidity) | 0-50cm moderately acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | High % base saturation. Calcium (Ca) and magnesium (Mg) medium. Potassium (K) very low. |
| Soil moisture regime | aquic |
| Susceptibility to drought | Soil moisture deficits are rarely experienced in normal years. |
| Soil drainage | Very poorly drained. |
| Susceptibility to waterlogging | Water table at 50cm during months November to April. |
| Susceptibility to flooding | Floods regularly associated with high intensity storms. High water table and slow runoff. |
