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Noogoora burr throws researchers a curve ball

CSIRO Media Release – 19 August 2008
Ref 08/145
A Noogoora burr plant. Worldwide, noogoora burr is an annual weed of 11 major agricultural crops in 28 countries Noogoora burr leaf infected with the rust fungus Puccinia xanthii . CSIRO looked at the possibility of using of additional strains of the rust fungus to enhance biological control of noogoora burr in northern Australia.
Noogoora burr
Image credit – CSIRO

Noogoora burr with rust fungus
Image credit – CSIRO

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Noogoora burr is a major problem to the livestock industry because it competes with palatable plants, its seedlings are toxic to stock, its burrs reduce wool values and it poses quarantine issues.
Noogoora burr
Image credit – CSIRO

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