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Defend cucurbits from downy mildew

March 4, 2016

Downy mildew is an important disease in cantaloupe, cucumber, pumpkin, squash and watermelon, especially in places with high humidity and rainfall, like the eastern U.S. Most years, downy mildew is a late-season problem on squash and pumpkin in the eastern and central U.S., however in recent years it has become more prevalent in cucumbers.

Downy mildew is sometimes called “wildfire” because of how rapidly it progresses. Diseased leaves have two major effects:

  1. Reduced yields and a greater chance of deformed fruit (especially in cucumber)
  2. Sunscalded fruit (especially in watermelon and winter squash)

Since epidemics of cucurbit downy mildew can develop rapidly, it’s critical to initiate a preventive program early, or before conditions become favorable for disease spread.  A product like Orondis® Opti fungicide which exhibits exceptional long-lasting disease control and systemic redistribution brings best-in-class protection against downy mildew in all types of cucurbits.  Combining the proven multi-site action of chlorothalonil, with the unique mode of action of oxathiapiprolin, Orondis Opti gives double punch disease control and built in resistance management.  To find out if Orondis Opti is approved for use in your area, visit this page.

Comparison photo

Since wet weather is conducive for downy mildew, it’s important to choose a fungicide that will last throughout these conditions. Syngenta also offers Bravo Weather Stik® fungicide for residual control that sticks and stay on cucurbits for protection making it a leading contact fungicide. Additionally, Syngenta offers Quadris Top® fungicide to protect cucurbits from a broad spectrum of profit-robbing diseases.

Syngenta has a broad product portfolio, world-class science and service offering growers choices on the farm so that they meet their productivity potential. For more information, talk to your local Syngenta representative.

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All photos are the property of Syngenta unless otherwise noted.

©2016 Syngenta. Important: Always read and follow label instructions. Some products may not be registered for sale or use in all states or counties. Please check with your local extension service to ensure registration status. Orondis Opti is a combination of separately registered products: Orondis Opti A and Orondis Opti B fungicides. Bravo Weather Stik®, Orondis®, Quadris Top®, the Alliance Frame, the Purpose Icon and the Syngenta logo are trademarks of a Syngenta Group Company.

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