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Animal Production Science Animal Production Science Society
Food, fibre and pharmaceuticals from animals
RESEARCH ARTICLE

A re-evaluation of the effectivenes of calcined Christmas Island C-grade rock phosphate

B Palmer, MDA Bolland and RJ Gilkes

Australian Journal of Experimental Agriculture and Animal Husbandry 19(100) 605 - 610
Published: 1979

Abstract

The influence of calcination temperatures up to 1050°C on the effectiveness of Christmas Island C-grade ore was determined in glasshouse trials with wheat. All calcines were capable of supporting the same maximum yield. Maximum effectiveness, equivalent to one-third that of superphosphate, occurred for calcination temperatures between 450°C and 600°C. Re-evaluation of the results of other workers indicated that a similar value for relative effectiveness applies to their work on a variety of species.

https://doi.org/10.1071/EA9790605

© CSIRO 1979

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