Improving phosphorus fertiliser management on southern Queensland grain farms | Primary industries & fisheries | Queensland Government

Improving phosphorus fertiliser management on southern Queensland grain farms

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Improving phosphorus fertiliser management on southern Queensland grain farms

Author/s:
Mike Bell, Dale Kirby
Published:
April 2010

Report summary

Improving phosphorus fertiliser management report cover

This project has focused on the main cropping soils of southern Queensland, where unpredictable responses to applied phosphorus fertiliser in grains and pulses are continuing to be recorded.

Some key messages to come out of the project include the following:

  • Our soil phosphorus reserves are declining, especially in the subsoil.
  • Fifty per cent of phosphorus removed comes from below 10 cm.
  • Phosphorus applied with seed only supplies approximately 10% of crop needs.
  • Measuring BSES-P and Colwell P in the 10-30 cm layer gives growers and advisers a better understanding of how much phosphorus the plant can access.
  • There is a measurable yield response to deeply applied phosphorus when subsoil reserves are low

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Improving phosphorus fertiliser management (PDF, 511 KB)

 
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Page maintained by David Burgin
Last reviewed 23 April 2010

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