Story: Superphosphate

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.

Using this item

Massey University

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

All images & media in this story

How to cite this page:

Arthur Duncan, 'Superphosphate - Superphosphate history', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/photograph/15561/granules (accessed 29 March 2024)

Story by Arthur Duncan, published 24 Nov 2008