Canola Sclerotinia

The presence of Sclerotinia Stem Rot is quite prevalent at varying levels of infection in canola fields throughout the County. This disease causes an infection that affects canola plants mostly during the flowering and petal drop stage. Sclerotinia causes premature ripening of plants, affecting the yield of canola crops. The effects of Sclerotinia are more damaging during periods of alternating weather, such as high moisture combined with warmer conditions.

What To Look For

Sclerotinia stem lesion Sclerotinia leaf lesion
Sclerotinia apothecia Sclerotinia shredding
Sclerotinia bodies  


There are many different strategies you can use to reduce the risk of getting Sclerotinia Stem Rot:

  • Early season scouting of crops
  • Practice canola rotations of 1 in 4 years
  • Use resistant varieties
  • Petal testing during early flowering stage
  • Use registered fungicide during proper time in season