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Syngenta US News

Ascernity® fungicide from Syngenta re-registered for use on turf in California

GREENSBORO, N.C., USA, August 1, 2023 ― Ascernity® fungicide from Syngenta is now available for golf course superintendents to use in California again. Ascernity combines SOLATENOL® technology ― an advanced SDHI for golf course turf ― and difenoconazole, the proven cooling DMI. Superintendents can begin to incorporate Ascernity into their rotation programs again to better prevent several key diseases in cool- and warm-season turf with no heat restrictions.  

By regaining access to Ascernity fungicide, superintendents will benefit from:  

  • Excellent control of diseases like anthracnose, large patch, summer patch, brown ring patch, gray leaf spot, microdochium patch, dollar spot and more, plus suppression of rapid blight under a 2(ee) label. 
  • Long-lasting control as the cornerstone of the GreenTrust® 365 Large Patch Guarantee Program. 
  • Improved turf safety with no heat restrictions ― even in the summer under high disease pressure. 
  • No unwanted plant growth regulation, phytotoxicity or thinning.  

“The re-registration of Ascernity offers California golf course superintendents a broad-spectrum fungicide that will protect against more than 20 diseases,” said Ron Townsend, technical service manager for Syngenta. “It is a powerful tool for disease control programs for cool- and warm-season turf. Specifically in California, it will be a great tool for large patch, brown patch, brown ring patch and dollar spot control.” 

For resistance management and season-long control, the Syngenta technical service team has developed prescriptive agronomic programs that strategically rotate Ascernity with other trusted products. To find recommendations for specific turf types and regions, visit

For more information about Ascernity, visit Join the conversation on Twitter using #Time4Ascernity.

About Syngenta  
Syngenta Crop Protection and Syngenta Seeds are part of Syngenta Group, one of the world’s leading agriculture companies. Our ambition is to help safely feed the world while taking care of the planet. We aim to improve the sustainability, quality and safety of agriculture with world- class science and innovative crop solutions. Our technologies enable millions of farmers around the world to make better use of limited agricultural resources. 

The content of this release is for information purposes only. This release is not, and should not be construed as, an offer to sell or issue or the solicitation of an offer to buy any securities or other property interests.  

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Media Contacts:
Mark LaFleur

Erin Bates

Web Resources:
Syngenta Newsroom