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The relative value of water-soluble and ammonium-citrate-soluble phosphorus for wheat production

Published online by Cambridge University Press:  27 March 2009

B. Palmer  and
R. S. Jessop
B. Palmer
Affiliation:
Department of Agriculture, Victoria, Australia
R. S. Jessop
Affiliation:
Department of Agronomy and Soil Science, University of New England, Armidale, Australia
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Extract

Wheat production in Australia relies heavily on superphosphate to maintain maximum grain yields. The current rock-phosphate supplies for superphosphate manufacture are derived from Nauru and Christmas Island in the Pacific Ocean; these supplies are anticipated to last only for the next 10–20 years. The supplies of ‘A’ grade ore (apatite) which can be used directly for superphosphate production are greatly overshadowed by large amounts of lower grade rock phosphate which is high in total phosphate but low in apatite. This material is termed ‘C’ grade rock and, to date, it has found little use in Australian agriculture.

Information

Type
Short Note
Information
The Journal of Agricultural Science , Volume 98 , Issue 2 , April 1982 , pp. 467 - 470
Copyright
Copyright © Cambridge University Press 1982

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References

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