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Gatten, new powdery mildew fungicide, now PMRA-registered

March 29, 2022  By Cohort Wholesale

On March 28, Cohort Wholesale announced Gatten, a unique mode-of-action fungicide, has been granted registration by Health Canada’s Pest Management Regulatory Agency (PMRA) for control of powdery mildew in grapes, cherries and cucurbits. 

Gatten is a new chemistry that will allow grape and cherry growers to continue to effectively manage powdery mildew as other chemistries exit the market or face new restrictions. As the first and only FRAC Group U13 fungicide, Gatten controls powdery mildew that may have developed tolerance to Groups 3, 7 or 11 fungicides and has shown no cross-resistance to existing products. 

“Whether because of increasing tolerance to some chemistries or the removal of other products from the market, the unfortunate reality is that growers have fewer effective fungicide options than they did even a few years ago,” said Scott Hodgins, manager of Cohort Wholesale. “When you combine Gatten’s performance with its new mode-of-action, this is going to be an excellent powdery mildew tool for Canadian farmers.” 

For a recorded webinar on Gatten featuring Hodgins and James Adams, vice-president of product development for Nichino America, click here.

Gatten inhibits the powdery mildew pathogen from absorbing nutrients from cherries and grapes, making it impossible for the pathogen to grow and expand. Gatten also limits the development and dispersion of viable spores, helping to break the disease cycle. Additionally, Gatten has translaminar movement, which provides protection to both sides of the leaf and improves control, especially when foliage is dense. 

Technical and sales support for Gatten is provided by Cohort Wholesale. In 2021, Cohort’s technical sales team worked with grape and cherry growers across Canada to establish an extensive field-scale research authorization program. Even under extremely high powdery mildew pressure, Gatten provided excellent control, and grower co-operators were also pleased with how the product handled and mixed in their spray tanks. 

With a 12-hour re-entry interval and short pre-harvest intervals, growers using Gatten will be able to more easily time other activities happening in their orchards and vineyards, as well. 

For more information about Gatten fungicide, visit or contact your crop inputs retailer. 

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