Diseases & Pests of Carrot, Celery, Parsnip & Lettuce
Carrot Foliar Blight
Two foliar blight diseases of carrot are common in Ontario: Cercospora leaf spot (Cercospora carrote) and Alternaria leaf blight (Alternaria dauci). Cercospora leaf spot can be appeared on both leaf and petiole as a small brown spot. Alternaria leaf spot generally does not infect petiole and symptoms on leaves are characterized as brown spots surrounded by yellow hallo. Both pathogens can survive in crop residues. The disease is polycyclic and favored by high humidity or wet period and warm temperature (17-27°C).
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Jul 17, 2015
Site-specific Late Blight Advisory for Ontario Tomato Growers
Jul 02, 2015
How to access TOMcast™ and other crop management tools at www.vegtools.ca?
Aug 13, 2014
Recent Rain Pattern in Ontario Shows High Risk of Late Blight Incidence in Tomatoes & Potatoes
Jul 25, 2018
Downy mildew found in Michigan Cucumbers in 2018
Jun 20, 2018
Late Blight Found in New York State on Tomato
Mar 28, 2018
CAP Funding for Horticultural Growers