This on-line guide to canola diseases and disorders is intended to provide basic information on the symptoms, life cycle and control of canola diseases that occur in British Columbia.

Diseases

• Alternaria black spot (gray leaf spot)
  
• Aster yellows
  
• Blackleg
  
• Brown girdling root rot
  
• Grey stem and white leaf spot (ring spot)
  
• Downy mildew
  
• Sclerotinia stem rot
  
• Seedling blight (damping off)
  
• White rust (staghead)
  

Disorders

• Pod sterility
  
• Sulfur deficiency
  

Always follow the label instructions and safety precautions when using pesticides.