soil map units where 181D Tuva is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu, Vanua Levu |
| Landscape position | Hill country in the lowlands and foothills |
| Soil parent material | basic and intermediate igneous rocks |
| Slope | Rolling (12-15°). Smooth microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-14cm silty clay loam. 14-50cm clay loam. 50-125cm clay loam (in situ weathered rock). |
| Minimum effective rooting depth | <50cm. Weathered rock between 40-50cm. |
| Soil pH (acidity) | 0-14cm moderately acid. 14-150cm strongly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Phosphorus (P) and nitrogen (N) very low. |
| Soil moisture regime | ustic |
| Susceptibility to drought | In normal years soil moisture deficits of 120 days are experienced in the period May to October. |
| Soil drainage | Moderately well drained. |
| Susceptibility to waterlogging | Never waterlogs. |
| Susceptibility to flooding | Never floods. |
