Clubroot – Nursery Response

Clubroot is the most serious soilborne disease affecting brassicas world wide and is caused by Plasmodiophora brassicae Woronin.

Clubroot is endemic in most Australian production regions with crop losses between 5 and 10%.

Know what to do if clubroot is detected

Clubroot Clubroot galls contain millions of spores.
The presence of galls on a seedling indicates that
could be more wide spread in the nursery


Caroline Donald

Ian Porter

Josie Lawrence

Barbara Czernaikowski

Rachel Lancaster

Dean Metcalf

Leigh James

Peter Stephens

Shane Dullahide

Clubroot Factsheet
Download 181kb

Know what to if you find clubroot :

  • Have your diagnosis confirmed by an expert.
  • Do not attempt to treat affected seedlings.
  • Discard clubroot infected seedlings by burning or disposal in an industrial landfill.

    Treating plants with a fungicide may reduce the symptoms of clubroot but will not kill the disease once it has established itself on the roots.

  • Increase the frequency of sampling.
  • Do not sell any plants from trays where clubroot is identified.
  • Seek assistance to identify and eliminate likely sources of contamination.

The Department of Primary Industries and Crop Health Services can provide positive identification of clubroot. The contact number is 03 9210 9222.

See Also :

Caroline Donald – DPI Victoria (this site)

Financial support for this research has been provided by: Horticulture Australia Limited, the vegetable
growers R&D levy and State Departments of Agriculture.

Thanks to the following growers for their assistance with trial work:

Con Ballan Geoff Cochrane Anthony Mason
David Milburn George Sabo Tony Wright
Sam Calameri Tom Winfield Andrew Doran
Mark Kable Kevin Temple Rod
Michael Camenzuli WU Yue Fang, ZHONE Cai Xia
Ha Sau Ying XIANG Cai Ji Robert Quirks
Dario Semenzin Harslett farms Greg Widderick

Thanks to the following for their technical assistance on the project:

Josie Lawrence Barbara
David Tooke Lisa Gibson
Jenny McGough Christina Bakker
Chang You Pan Kevin Lai
Alison Anderson Glenn Geitz
R. Palmer Kathy
David Richard Duncan Cameron
C. Haase  

Statistical advice by Fiona Thomson and Nam Ky Nguyen (Department of Primary Industries, Vic).

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