70 Tuave clay

soil map units where 70 Tuave clay is dominant

Soil properties

Property Value
Geographic distribution Upolo
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 Rolling slopes
Surface outcrops Surface usually free of boulders or stones. No rock outcrops.
Brief soil profile description -
Soil profile texture 31cm clay. 40cm stony clay. on weathered sub-angular rocks
Minimum effective rooting depth <100cm
Soil pH (acidity) Strongly acid (pH = 5.2)
Salinity Non saline
Soil fertility under natural conditions Low to moderate fertility. Base saturation 15% topsoil, nil subsoil. Very low exchangeable potassium (K) and organic carbon (C).
Soil moisture regime Without dry season (Perudic moisture regime)
Susceptibility to drought No dry season. Rainfall 4000-5000+mm.
Soil drainage Well drained
Susceptibility to waterlogging Never waterlogs
Susceptibility to flooding Never floods

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