soil map units where 70A Nasou is dominant
Soil properties
| Property | Value |
|---|---|
| Geographic distribution | Viti Levu, Vanua Levu |
| Landscape position | Fans and outwash surfaces in the lowlands and foothills |
| Soil parent material | river alluvium from basic and intermediate rocks |
| Slope | Flat to gently undulating (0-3°). Smooth microrelief. |
| Surface outcrops | No surface rock outcrops. No surface stones or boulders. |
| Brief soil profile description | - |
| Soil profile texture | 0-25cm clay loam. 25-50cm gritty silt loam. 50-55cm silt loam. 55-69 gritty silt loam. 90-125cm gritty clay loam. |
| Minimum effective rooting depth | >125cm. Note low subsoil nutrient status. |
| Soil pH (acidity) | 0-125cm strongly acid. |
| Salinity | Non saline. |
| Soil fertility under natural conditions | Nitrogen (N) and phosphorus (P) low. Potassium (K) extremely low. |
| Soil moisture regime | ustic |
| Susceptibility to drought | In normal years soil moisture deficits of up to 120 days may be experienced sometime in the period May to October. |
| Soil drainage | Well drained. |
| Susceptibility to waterlogging | Never waterlogs. |
| Susceptibility to flooding | In normal years and on slopes <2° flooding (water only) for up to 3 days duration may occur on 2 occasions sometime in the period November to April. |
