b'Expanding ToolboxA number of fungicides have had their labels expanded in Canada to offer control for various potato diseases.BY: ASHLEY ROBINSONWITH GROWERS SOON to be out in fieldsof applications reduced to three per year, while across the country planting this years potatomancozeb is still allowed for ground and aerial crop, the ever-shrinking potato disease controlWe believe thatfoliar applications but can no longer be used as a toolbox has expanded with two products gettingpotato seed piece treatment.the greenlight for potatoes.Miravis Duo is goingWith reduced options for previous products, Syngenta Canadas Miravis Duo is now regis- to help growersthe Miravis Duo and Serifel announcements are tered for use on potatoes to protect against earlystreamline and simplifywelcomed by growers and offer more options to blight and several other diseases, while BASFprotect their potato crops.Canadas Serifels label has been expanded totheir spray programsMiravis Duo has the ADEPIDYN fungicide and include control for potatoes, news releases fromby being able to treatdifenoconazole in it, and by using it growers are the companies say.able to make multiple in-season applications for Over the last few years, Health Canada\'smultiple costly threatsprotection against early blight, Syngentas release Pest Management Regulatory Agency (PMRA)with one product.says. It also offers control against brown spot, has reviewed the fungicides chlorothalonil andBotrytis and white mould.mancozeb which are important early and lateJANETTE STEWART "Ongoing changes to the use pattern of multi-blight control tools. Chlorothalonil saw its numbersite fungicides also means a shift from traditional foliar disease management. The broad-spectrum activity of Miravis Duo helps fill this gap and is the only non-chlorothalonil fungicide on the potato market offering activity against Botrytis," the release notes."We believe that Miravis Duo is going to help growers streamline and simplify their spray programs by being able to treat multiple costly threats with one product," Janette Stewart, na-tional horticulture marketing lead with Syngenta Canada, says in the release.Serifel from BASF is a fungicide which provides multiple modes of action. It is also a biological and can be used for organic production. Before the PMRA approved Serifels label expan-sion it was registered for use in targeting powdery mildew and botrytis in grapesSerifels strong performance and low use rate will make Serifel fungicide an excellent addition to growers current disease management programs, Anne McRae, technical services specialist, hor-ticulture for BASF Canada Agricultural Solutions, says in the release.Serifel can used in tank mixes or as a rotation partner with products such as Kumulus, Sercadis or Vivando, BASFs release notes. It offers alternate modes of action for resistance disease management right up to harvest. 26 SPUDSMART.COM WINTER 2021'