Hg2 Hunga soils, rolling phase

soil map units where Hg2 Hunga soils, rolling phase is dominant

Soil properties

Property Value
Geographic distribution Vava’u
Landscape position Ash-mantled rolling slopes on coral terrace.
Soil parent material
Slope Rolling slopes (<12°)
Surface outcrops
Brief soil profile description 0-28 cm Dark brown to dark reddish brown; firm clay; 28-45 cm Brown to reddish brown firm clay; 45-70 cm Strong Brown to yellowish red firm clay.
Soil profile texture
Minimum effective rooting depth 70 cm
Soil pH (acidity) Near neutral to slightly acid
Soil fertility under natural conditions Organic carbon (C) and nitrogen (N) low to medium in topsoil and very low in subsoil; phosphorus (P) very low; Base saturation (%), exchangeable calcium (Ca) and magnesium (Mg) high; reserve potassium (K) low to very low.
Soil moisture regime
Susceptibility to drought
Soil drainage Well drained
Susceptibility to waterlogging
Susceptibility to flooding

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