No. 7 Article 8/May 9, 2008

Folicur Fungicide Registered for Use on Wheat in Illinois

Recently, Folicur (tebuconazole) fungicide from Bayer CropScience received a full section 3 registration on wheat. Illinois registration of the product has already occurred, and the state's wheat growers can now apply this product.

The addition of Folicur gives Illinois wheat growers another efficacious product to control Fusarium head blight (scab). Caramba from BASF was recently registered for use on wheat (see the Bulletin, issue 6, May 2, 2008), and Proline fungicide was registered for use on wheat in 2007. Results of multiple university trials over several years, sponsored by the U.S. Wheat and Barley Scab Initiative and summarized by Dr. Pierce Paul at Ohio State University, indicate that all three products are effective at reducing scab severity and associated mycotoxins in the harvested grain. The summary also indicated that a mixture of Folicur and Proline (3 fl oz of each product) may be more effective than either Folicur or Proline alone, and a 2(ee) recommendation from Bayer CropScience for this mixture is available.

For more information about managing Fusarium head blight, refer to "Managing Fusarium Head Blight of Wheat" in issue 3 of the Bulletin (April 11, 2008). Wheat heads are beginning to emerge in parts of southern Illinois. The most effective fungicide application timing for control of Fusarium head blight is at early anthesis (Feekes 10.5.1). Check the Fusarium head blight risk map tool at www.wheatscab.psu.edu to determine the level of risk in your area.--Carl A. Bradley

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