soil map units where 66H Papaloa hill soils is dominant
Soil properties
Property | Value |
---|---|
Geographic distribution | Samoa |
Landscape position | Soils of the lowlands and foothills - strongly dissected landscapes |
Soil parent material | from pahoehoe, aa, scoria and dykes of basalt of basalt of the Fagaloa Volcanics |
Slope | Strongly rolling slopes |
Surface outcrops | Surface rocky and bouldery. No rock outcrops. |
Brief soil profile description | - |
Soil profile texture | 38cm stony clay. on very stony clay with some weathered basalt rock |
Minimum effective rooting depth | <40cm |
Soil pH (acidity) | Slightly acid (pH = 6.0) |
Salinity | Non saline |
Soil fertility under natural conditions | Moderate fertility. Base saturation 50-70% topsoil, 30% in subsoil. Exchangeable potassium (K) and organic calcium (C) values moderate. Available potassium (P) low to moderate. |
Soil moisture regime | Without dry season (Perudic moisture regime) |
Susceptibility to drought | Very weak to no dry season (<1 month <100cm rainfall). Rainfall 3250-5000mm. |
Soil drainage | Well drained |
Susceptibility to waterlogging | Never waterlogs |
Susceptibility to flooding | Never floods |