soil map units where 4A Dreketi is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu, Vanua Levu |
| Landscape position | Marine marshes of the lowlands and coastal margins |
| Soil parent material | estuarine alluvium |
| Slope | Flat to near level (0-1°). Uneven microrelief due to reclamation and drainage works. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-14cm peaty silty clay. 14-72cm clay. 72-95cm silty clay. 95-141cm silty clay loam. |
| Minimum effective rooting depth | <60cm. Note high water table fluctuating with tides. |
| Soil pH (acidity) | 0-14cm strongly acid. 14-32cm extremely acid. 32-95cm strongly acid. 95-120cm slightly acid. |
| Salinity | Strongly saline. |
| Soil fertility under natural conditions | Low phosphorus (P). Very low nitrogen (N) below 14cm. |
| Soil moisture regime | aquic |
| Susceptibility to drought | Soil moisture deficits are never experienced. |
| Soil drainage | Very poorly drained. |
| Susceptibility to waterlogging | In normal years and due to drainage water table maintained at about 65-70cm. Can experience short duration waterlogging at the surface during flood and spring tide events. |
| Susceptibility to flooding | Artificially drained. Water table still affected by tidal fluctuations. In normal years would suffer 4-5 floods, each lying for 2-3 days sometime in the period November to April. |
