54S Mulimauga steepland soils

soil map units where 54S Mulimauga steepland soils is dominant

Soil properties

Property Value
Geographic distribution Samoa
Landscape position Soils of the lowlands and foothills - moderately dissected landscapes
Soil parent material from scoria aa of the Mulifanua and Salani Volcanics
Slope Steep to very steep slopes
Surface outcrops Surface usually bouldery. No rock outcrops.
Brief soil profile description -
Soil profile texture 10cm gritty silty clay. 55cm very gravelly clay with boulders. on weathering scoria and black sand
Minimum effective rooting depth >100cm
Soil pH (acidity) Slightly acid (pH = 6.1)
Salinity Non saline
Soil fertility under natural conditions Moderate fertility. Base saturation 40-50%. Exchangeable potassium (K) moderate, very low in subsoil.
Soil moisture regime Without dry season (Perudic moisture regime)
Susceptibility to drought Very weak dry season (<1 month <100mm rainfall). Rainfall 2750-3500mm.
Soil drainage Well drained
Susceptibility to waterlogging Never waterlogs
Susceptibility to flooding Never floods

Partners and funders