Dr. Kelly Turkington, a plant pathologist with Agriculture & Agri-Food Canada provides some advice on how to assess the need for a fungicide application to control sclerotinia in canola.
Once the symptoms of sclerotinia show in a canola field its is already tool late to take action.
Having soil moisture levels near capacity put canola at risk.
click here for the scouting guide from the Canola Council of Canada that Kelly references in the interview.
Source : Alberta Canola Producers Commission