Uh Uiha soils

soil map units where Uh Uiha soils is dominant

Soil properties

Property Value
Geographic distribution Ha’apai
Landscape position Young ash over older ash or limestone on Uiha Island.
Soil parent material
Slope Gently undulating (3°)
Surface outcrops
Brief soil profile description 0-25 cm Dark reddish brown friable clay loam; 25-60 cm Dark reddish brown friable to firm with lapilli; 60-90 cm Dark reddish brown friable sandy clay loam; 90+cm Dark reddish brown firm sandy loam with many lapilli.
Soil profile texture
Minimum effective rooting depth 100 cm
Soil pH (acidity) Near neutral to slightly alkaline
Soil fertility under natural conditions Very high Base saturation (%), calcium (Ca), magnesium (Mg) and sodium (Na) values; medium phosphorus (P) and phosphorus (P) retention; low organic carbon (C) and Nitrogen (N). High reserve magnesium (Mg) and low reserve potassium (K). Low sulphur (S).
Soil moisture regime
Susceptibility to drought
Soil drainage Well drained
Susceptibility to waterlogging
Susceptibility to flooding

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