17aH Matavanu hill soils

soil map units where 17aH Matavanu hill soils is dominant

Soil properties

Property Value
Geographic distribution Savaii
Landscape position Soils of the lowlands and foothills - very slightly dissected landscapes
Soil parent material from mainly pahoehoe basalt of the Aopo Volcanics
Slope Strongly rolling to moderately steep slopes
Surface outcrops Surface very cindery and often bouldery with large blocks of scoria.
Brief soil profile description -
Soil profile texture 5cm cindery gravel. 30cm scoriaceous gravel and boulders. on scoria boulders
Minimum effective rooting depth <45cm
Soil pH (acidity) Slightly acid (pH = pH = 6.0)
Salinity Non saline
Soil fertility under natural conditions Moderate to low fertility. Minimal weathering.
Soil moisture regime With weak to strong dry season (Udic moisture regime)
Susceptibility to drought Weak to very weak dry season (1-2 months <100mm rainfall). Rainfall 2750-4375mm.
Soil drainage Well drained
Susceptibility to waterlogging Never waterlogs
Susceptibility to flooding Never floods

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