soil map units where 155H Nabuono is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Vanua Levu |
| Landscape position | Hill country in the lowlands and foothills |
| Soil parent material | silicified and indurated tuffs, sandstones, marls and agglomerates |
| Slope | Very steep (36-40°). Uneven microrelief. |
| Surface outcrops | Surface rock outcrops cover 8% of the area. Surface stones and boulders occupy 4% of the surface. |
| Brief soil profile description | - |
| Soil profile texture | 0-20cm very firm gravelly clay. 20-27cm firm clay. 27-37cm friable clay. On weathering tuff. |
| Minimum effective rooting depth | <50cm. Weathered in situ rock normally at 50cm. |
| Soil pH (acidity) | Strongly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Low phosphorus (P) and potassium (K). |
| Soil moisture regime | ustic |
| Susceptibility to drought | In normal years soil moisture deficits of 100-120 days are experienced sometime in the period May to October. |
| Soil drainage | Well drained. |
| Susceptibility to waterlogging | Never waterlogs. |
| Susceptibility to flooding | Never floods. |
