Farming Crop disease warning 22/11/2017 FacebookTwitterEmail CAUTION URGED: Dr Steve Marcroft is warning of a high blackleg disease risk for 2017 canola crops. The Grains Research and Development Corporation has developed a fact sheet to help farmers determing their individual crop risk. CANOLA growers are being encouraged to assess the extent of blackleg disease in crops to reduce the risk of disease […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password