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
Salinity -
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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