Av Ava soils

soil map units where Av Ava soils is dominant

Soil properties

Property Value
Geographic distribution Ha'apai
Landscape position Rewashed ash in closed sinkhole depressions and hollows on Nomuka Island.
Soil parent material
Slope Flat
Surface outcrops
Brief soil profile description 0-35 cm Very dark greyish brown friable clay to clay loam; 35-70 cm brown mottled firm clay to clay loam on greyish brown mottled massive and firm clay.
Soil profile texture
Minimum effective rooting depth <70 cm
Soil pH (acidity) Moderately acid
Salinity
Soil fertility under natural conditions Not analysed
Soil moisture regime
Susceptibility to drought
Soil drainage Imperfectly to poorly drained
Susceptibility to waterlogging Poor natural drainage.
Susceptibility to flooding May flood in wet summer months

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