26H Neiafu hill soils

soil map units where 26H Neiafu hill soils is dominant

Soil properties

Property Value
Geographic distribution Savaii
Landscape position Soils of the lowlands and foothills - slightly dissected landscapes
Soil parent material from scoria and basalt of the Mulifanua Volcanics
Slope Moderately steep to strongly rolling slopes
Surface outcrops Surface mainly free of stones and boulders. No rock outcrops.
Brief soil profile description -
Soil profile texture 18cm slightly gravelly clay. 43cm gravelly clay loam. on weathered scoria
Minimum effective rooting depth <60cm
Soil pH (acidity) Slightly acid (pH = pH = 6.3)
Salinity Non saline
Soil fertility under natural conditions High fertility. Base saturation 100%. Exchangeable calcium (Ca), magnesium (Mg), potassium (K) values high. Moderate available phosphorus (P).
Soil moisture regime With weak to strong dry season (Udic moisture regime)
Susceptibility to drought Moderate to strong dry season (2-3 months <100mm rainfall). Rainfall 2000-3000mm.
Soil drainage Well drained
Susceptibility to waterlogging Never waterlogs
Susceptibility to flooding Never floods

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