Clubroot of canola and mustard


Clubroot is caused by the soilborne amoeba-like organism Plasmodiophora brassicae. The disease occurs worldwide and only affects plants in the Cruciferae family including canola, mustard, cabbage, cauliflower, brussels sprouts and broccoli. Internationally, clubroot can cause yield losses of up to 1.6 t/ha in canola, and it is considered a serious disease in Canada and Europe. In Australian vegetable brassicas, clubroot is widespread and causes significant yield losses.

This Primefact contains information on the following:

  • background information
  • symptoms shown by infected plants
  • the clubroot disease cycle
  • managing the disease and methods of control.


Primefact 115 First Edition

Published: 01 Dec 2005