soil map units where 23B Lawai is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu |
| Landscape position | Levees of the major floodplains in the lowlands and foothills |
| Soil parent material | river alluvium from basic and intermediate rocks |
| Slope | Undulating (4-7°). Smooth microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones. |
| Brief soil profile description | - |
| Soil profile texture | 0-50cm very fine sandy loam. 50-80cm fine sandy loam. 80-100cm loam. 100-150cm fine sandy loam. |
| Minimum effective rooting depth | >150cm |
| Soil pH (acidity) | 0-150cm near neutral. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Organic matter values very low. Potassium (K) values very low in subsoil. |
| Soil moisture regime | ustic |
| Susceptibility to drought | In normal years soil moisture deficits are experienced for >90 days during the months May to October. Shallow rooting crops go under stress. |
| Soil drainage | Well drained. |
| Susceptibility to waterlogging | Subject to short duration waterlogging only during major flood events. Water table >125cm from surface at all times. |
| Susceptibility to flooding | 1 in 5 year return period for major floods contributing sediment. Days under water - 2 to 5 days. |
