Hi2 Ha'apai soils, rolling phase

soil map units where Hi2 Ha'apai soils, rolling phase is dominant

Soil properties

Property Value
Geographic distribution Ha'apai
Landscape position Older ash on raised coral limestone terrace.
Soil parent material
Slope Gently undulating (3-5°)
Surface outcrops
Brief soil profile description 0-20 cm Very dark brown friable clay; 20-50 cm Brown firm, plastic clay with clay coatings;on brown firm, plastic clay.
Soil profile texture
Minimum effective rooting depth 75 cm
Soil pH (acidity) Slightly acid to near neutral
Soil fertility under natural conditions Low organic carbon (C) and nitrogen (N) values; low phosphorus (P); high Base saturation (%), calcium (Ca), magnesium (Mg) and nitrogen (N); low reserve potassium (K) and high reserve magnesium (Mg).
Soil moisture regime
Susceptibility to drought
Soil drainage Moderately well drained
Susceptibility to waterlogging
Susceptibility to flooding

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