Details on brassica diseases from the Ontario Ministry of Agriculture. Disease management is important for producing acceptable yield and quality of cruciferous crops such as cabbage, cauliflower, canola, rutabaga, grown for the fresh market, the processor, and for storage. Diseases caused by viruses, bacteria, and fungi, as well as physiological disorders, are all found in cruciferous crops in Ontario.

Address: 1 Stone Road West, Guelph, ON N1G 4Y2
Telephone: (519) 826-3100
Website: http://www.omafra.gov.on.ca/english/crops/facts/85-043.htm