Story: Superphosphate

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Granules

Granules

Superphosphate comes in granules of different sizes. The best superphosphate has granules of 1–4 millimetres in diameter, with about 5% outside this range. The granules collapse on contact with soil moisture and release phosphate rapidly into the soil.

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Massey University

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How to cite this page:

Arthur Duncan. 'Superphosphate - Superphosphate history', Te Ara - the Encyclopedia of New Zealand, updated 14-Nov-12
URL: http://www.TeAra.govt.nz/en/photograph/15561/granules