Ha1 Ha'atua soils

soil map units where Ha1 Ha'atua soils is dominant

Soil properties

Property Value
Geographic distribution 'Eua
Landscape position Easy rolling surfaces of ash-covered coral limestone terraces.
Soil parent material
Slope Flat to gently rolling slopes (0-5°)
Surface outcrops
Brief soil profile description 0-36 cm Dark brown friable clay; 36-80 cm Dark reddish friable brown clay; clay coatings; many Fe-Mn mottles; 80-120 cm Dark reddish brown friable clay; on Coral limestone.
Soil profile texture
Minimum effective rooting depth 120 cm
Soil pH (acidity) Slightly acid
Soil fertility under natural conditions Organic carbon (C) medium to very low with depth; nitrogen (N) and phosphorus (P) low; phosphorus (P) retention high; Base saturation (%), exchangeable calcium (Ca) and magnesium (Mg) high; sulphur (S) medium to very high; reserve potassium (K) low.
Soil moisture regime
Susceptibility to drought
Soil drainage Well drained
Susceptibility to waterlogging
Susceptibility to flooding

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