Fruit & Vegetable Magazine

News Chemicals Diseases
Switch 62.5 WG fungicide label temporarily expanded for Alternaria control in some provinces

July 26, 2022  By Fruit & Vegetable

Josh Mosiondz, provincial minor use co-ordinator with the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA), recently posted about the announcement made by the Pest Management Regulatory Agency (PMRA) on their approval of an emergency use registration (EUR) for SWITCH 62.5 WG fungicide. The EUR is for suppression of Alternaria leaf blight (Alternaria brassicicola) on Brussels sprouts, broccoli and cauliflower and is only for Ontario, Quebec, Nova Scotia, Prince Edward Island, and Newfoundland and Labrador until July 7, 2023.

Switch 62.5 WG is labeled for management of diseases on a wide range of crops in Canada, and its use on Brussels sprouts, broccoli and cauliflower has already been submitted for review as a full label expansion, with the hope for full registration by the 2023 field season. This EUR request was initiated by participating provinces in response to the reduced number of chlorothalonil applications permitted on the crops following RVD2018-11 and a dearth of registered protective products that would allow for proper rotation and season-long disease protection.

For a copy of the emergency use label, Ontario growers may contact Mosiondz (226-971-3407 or, Katie Goldenhar, OMAFRA horticulture pathologist (519-835-5792 or, or Travis Cranmer, OMAFRA vegetable crops specialist (Brassicas, Alliums and leafy greens), (519-835-3382 or Non-Ontario growers from participating provinces may contact their provincial minor use co-ordinator or crop specialist(s).  Alternatively, you may contact your regional supply outlet, Syngenta Canada Inc. Representatives, or visit the PMRA label site. |READ MORE


Print this page


Stories continue below