49A Vatuma

soil map units where 49A Vatuma is dominant

Soil properties

Property Value
Geographic distribution Viti Levu
Landscape position Secondary floodplains and depressions in the lowlands and foothills
Soil parent material river alluvium from basic and intermediate rocks
Slope Flat to gently undulating (0-3°). Smooth microrelief.
Surface outcrops No surface rock outcrops. No surface stones or boulders.
Brief soil profile description -
Soil profile texture 0-25cm clay loam. 25-125cm clay.
Minimum effective rooting depth <125cm. Note seasonal waterlogging.
Soil pH (acidity) 0-38cm near neutral. 38-125cm moderately alkaline.
Salinity Non saline.
Soil fertility under natural conditions Very low potassium (K) throughout. Nitrogen (N) very low.
Soil moisture regime ustic
Susceptibility to drought In normal years soil moisture deficits of 90-100 days are experienced sometime in the period May to October.
Soil drainage Imperfectly drained.
Susceptibility to waterlogging In normal years waterlogging can occur for up to 40 days within 1m of the soil surface.
Susceptibility to flooding In normal years floods (water only) would occur 3-4 times but of short durations (1-2 days). Floods depositing sediment have a 1 in 10 year return period. Floods occur sometime within the period November to April.

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