47 Aleisa stony silty clay loam

soil map units where 47 Aleisa stony silty clay loam is dominant

Soil properties

Property Value
Geographic distribution Samoa
Landscape position Soils of the lowlands and foothills - slightly dissected landscapes
Soil parent material from mixed aa and pahoehoe basalt of the Mulifanua Volcanics
Slope Rolling to strongly rolling slopes
Surface outcrops Surface stony and locally bouldery. No rock outcrops.
Brief soil profile description -
Soil profile texture 20cm very stony clay. 15cm stony silty clay. on boulders and stones with silty clay between them
Minimum effective rooting depth <50cm
Soil pH (acidity) Slightly acid (pH = 6.3)
Salinity Non saline
Soil fertility under natural conditions Moderately fertile. Base saturation 70%. Base saturation, organic carbon (C) and exchangeable potassium (K) values high in topsoil but low in subsoil.
Soil moisture regime Without dry season (Perudic moisture regime)
Susceptibility to drought Very weak dry season (<1 month <100mm rainfall). Rainfall 3250-4375mm.
Soil drainage Well drained
Susceptibility to waterlogging Never waterlogs
Susceptibility to flooding Never floods

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