49 Gaegae stony and bouldery sand and stony clay

soil map units where 49 Gaegae stony and bouldery sand and stony clay 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 and strongly rolling slopes
Surface outcrops Surface locally very bouldery. No rock outcrops.
Brief soil profile description -
Soil profile texture 8cm peaty silty clay with boulders. 13cm silty clay. 30cm very bouldery clay. on very bouldery-silty clay
Minimum effective rooting depth <60cm bouldery at 70cm
Soil pH (acidity) Strongly acid (pH = 5.2)
Salinity Non saline
Soil fertility under natural conditions Moderate to low fertility. Base saturation 16% in topsoil. Plant nutrients concentrated in topsoil.
Soil moisture regime Without dry season (Perudic moisture regime)
Susceptibility to drought No dry season. Rainfall 5000mm.
Soil drainage Well drained
Susceptibility to waterlogging Never waterlogs
Susceptibility to flooding Never floods

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