Clay spreading with highly calcareous clays


Research organisaton
Funding source

Trial details

Researcher(s) S Malcolm, D Davenport and S Doudle
Year(s) 2003
Contributor South Australian Research and Development Institute
Trial location(s) Site 1, Eyre Peninsula, SA
Clay spreading with highly calcareous clays locations

To assess how best to address trace element issues on a paddock spread five years previously with calcareous clay.

Key messages
  • Single foliar trace element applications may not be sufficient to correct deficiencies caused by spreading calcareous clays.
  • Placement of copper, zinc and manganese below the incorporated clay layer appeared to partially address the problem.
  • This was an unreplicated farmer demo so needs to be repeated with replication to improve interpretation of results.
Lead research organisation N/A
Host research organisation South Australian Research and Development Institute
Trial funding source GRDC UA00087
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners PIRSA rural solutions


Crop type Barley
Treatment type(s)
  • Fertiliser: Application
Trial type Experimental
Trial design Unknown

Eyre Peninsula 2003

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

urea, DAP, carbonite, copper and zinc oxy sulphate, manganese sulphate

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Trial last modified: 10-06-2019 11:09am AEST