The Wharekohe podzol soils of Northland’s gumlands were formed under kauri forest from clays and sandstones over a long period of time. They have a deep layer of organic matter, including tree roots, overlaying a white, quartz-dominated, bleached horizon that has been leached of almost all clays and nutrients. Below this are darker layers of clay. Drainage is necessary to establish pasture.
Te whakamahi i tēnei tūemi
New Zealand Society of Soil Science
Reference:
Les Molloy, Soils in the New Zealand landscape: the living mantle. Wellington: Mallinson Rendel, 1988, plate 5.17
Photograph by Quentin Christie
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