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Posted 16 May 2008. PMN Crop News.

SDSU Specialist: New Disease Management Options for Wheat Growers

South Dakota State University.

Brookings, South Dakota (May 12, 2008)--South Dakota farmers who grow nearly 4 million acres of small grains each year have new disease management options for 2008, a South Dakota State University specialist said.


SDSU Extension Plant Pathologist Larry Osborne said growers in South Dakota will have expanded options for managing fungal diseases this year thanks largely to the registration or label changes for products including Bayer’s Folicur®, and BASF’s Caramba™.

Tebuconazole, the active ingredient in Folicur® and some related products, has been used by producers in South Dakota for several years to combat Fusarium head blight, or wheat scab. Osborne said that option depended on South Dakota obtaining a “Section 18” exemption each year to allow application of tebuconazole against that potentially devastating disease. In 2007, however, a newly registered product, Proline™ (prothioconazole), entered the fungicide market fully labeled for wheat and barley, giving producers a new option for scab suppression.

While the producers received a new management tool, an old one was taken away — the registration of Proline™ meant that tebuconazole was no longer needed on an emergency basis and thus did not receive the exemption in 2007. The picture has changed considerably in 2008, Osborne said.

In addition to those products mentioned, Orius™ (tebuconazole), and the tank mix partners Proline plus Folicur are also available options for scab suppression.

“These products and others also have good to excellent activity against several other foliar fungal diseases such as rusts, tan spot, and powdery mildew,” Osborne said.

For more detailed application recommendations, refer to SDSU Extension Fact Sheet FS917, “Managing Crop Diseases with Fungicides.’ Find it online at the SDSU Plant Pathology Web site, Click on “Publications” to find a list of documents with information about managing crop health.

Larry Osborne