soil map units where 27A Sigatoka 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 (0-1°). Smooth microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones. |
| Brief soil profile description | - |
| Soil profile texture | 0-25cm clay loam. 25-35cm silt loam. 35-100cm clay loam. >100cm fine sandy clay loam. |
| Minimum effective rooting depth | >150cm |
| Soil pH (acidity) | 0-150cm slightly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Low organic carbon (C) values. Low potassium (K) values in subsoils. |
| Soil moisture regime | ustic |
| Susceptibility to drought | In normal years soil moisture deficits are experienced for >30 days during the months May to October. |
| Soil drainage | Well drained. |
| Susceptibility to waterlogging | Subject to short duration waterlogging during periods of low frequency major flood events. Water table >125cm from surface at all times. |
| Susceptibility to flooding | 1 in 10 year return period for major floods contributing minor amounts of sediment. Days under water 4 to 7. |
