Story: Soil investigation

Cobalt-deficient areas

Cobalt-deficient areas

Soils on the Volcanic Plateau lack the trace element cobalt – a deficiency that causes disease in farm animals. The region is where two major eruptions, Taupō (about 200 AD) and Kaharoa (about 1314 AD), deposited layers of cobalt-deficient, soil-forming ash.

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How to cite this page:

P. J. Tonkin, 'Soil investigation - Early investigations and bush sickness: 1900–1930', Te Ara - the Encyclopedia of New Zealand, (accessed 19 May 2022)

Story by P. J. Tonkin, published 24 Sep 2007