soil map units where 56A Nadruka is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu |
| Landscape position | Secondary floodplains and depressions in the lowlands and foothills |
| Soil parent material | river alluvium from mixed composition rocks |
| Slope | Flat to gently undulating (0-3°). Commonly smooth microrelief. Shrinkage cracks common in winter months. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-100cm clay. |
| Minimum effective rooting depth | <100cm. Note high seasonal water table. |
| Soil pH (acidity) | Moderately acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Very low potassium (K). |
| Soil moisture regime | aquic |
| Susceptibility to drought | In normal years soil moisture deficits are never experienced. |
| Soil drainage | Poorly drained. |
| Susceptibility to waterlogging | Water table fluctuates between 20cm depth (summer months) and 100cm depth (winter months). |
| Susceptibility to flooding | Infrequent (2-3 per year) short duration (3-4 days) floods occur in normal years sometime between November and April. Sedimentation floods have a 1 in 3 year return period. |
