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Dual Action Against Fusarium

Anew broad-spectrum fungicide with two Group 3 actives against leaf and head disease in wheat and barley is billed as the “most effective” fungicide to suppress fusarium head blight.

Bayer CropScience Canada has announced registration in Western Canada for its tebuconazole and prothioconazole product, Prosaro, to be available at participating ag retailers for the 2011 growing season.

“This is great news for cereal growers, especially after the wet season we experienced in 2010,” Graham Hastie, the company’s manager for cereal crop fungicides, insecticides and seed treatments, said in a release.

Tebuconazole, already an active ingredient in Bayer’s Folicur and Raxil fungicides, enters and translocates through the plant and works against infections that have already occurred, the company said.

Prothioconazole, already used in Bayer’s Proline, translocates more slowly but has longer activity and thus protects against future infections, Bayer added.

Applied at 324 millilitres in at least 40 litres of water (20 for aerial application) per acre, the product offers cereal crops “extended protection against leaf spotting diseases and the strongest curative activity for the highest level of rust control in wheat and barley,” Bayer said.

Apart from suppression of fusarium head blight in both barley and wheat, Prosaro’s label covers it for control of net blotch, spot blotch, leaf blotch, powdery mildew and leaf, stem and stripe rusts in barley, and control of leaf and glume blotch, tan spot and rusts in wheat.

Prosaro also includes a surfactant to stick the active ingredients to the plant leaf, which Hastie said “ensures the fungicide is available to the plant for disease control and not wasted by washing off onto the ground.”

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