soil map units where 40B Bua is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu and Vanua Levu |
| Landscape position | Plateau in the lowlands and foothills |
| Soil parent material | basic and intermediate rocks |
| Slope | Undulating (4-7°). Generally smooth microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-17cm friable silty clay loam. 17-49cm firm gravelly clay loam. 49-109cm friable to firm clay loam. 109-149cm friable clay loam. |
| Minimum effective rooting depth | >125cm. Note very low subsoil nutrient status and aluminium toxicity. |
| Soil pH (acidity) | 0-149cm strongly acid. Note variable charge. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Very low nitrogen (N) and potassium (K). Possible aluminium (Al) toxicity. |
| Soil moisture regime | ustic |
| Susceptibility to drought | In normal years soil moisture deficits of >120 days are experienced sometime in the period May to October. |
| Soil drainage | Well drained. |
| Susceptibility to waterlogging | Never waterlogs. |
| Susceptibility to flooding | Never floods. |
