85 Tiavi silty clay loam

soil map units where 85 Tiavi silty clay loam is dominant

Soil properties

Property Value
Geographic distribution Samoa
Landscape position Soils of the uplands - moderately dissected landscapes
Soil parent material from mixed aa and pahoehoe basalt of the Salani Volcanics
Slope Undulating to rolling slopes
Surface outcrops Surface locally bouldery. No rock outcrops.
Brief soil profile description -
Soil profile texture 8cm stony silty clay loam. 30cm silty clay. 23cm gravelly to stony silty clay. on stones and boulders
Minimum effective rooting depth 90cm
Soil pH (acidity) Strongly acid (pH = 4.5)
Salinity Non saline
Soil fertility under natural conditions Low fertility. Base saturation 13% in topsoil, nil below. Exchangeable potassium (K) and organic calcium (C) high in topsoil, low below.
Soil moisture regime Without dry season (Perudic moisture regime)
Susceptibility to drought No dry months. Rainfall 4375-6250mm.
Soil drainage Well drained
Susceptibility to waterlogging Never waterlogs
Susceptibility to flooding Never floods

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