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63

Stratego 250 EC: Broad-spectrum disease control in soybeans

Presenter: J. R. Bloomberg

All authors and affiliations: J. R. BLOOMBERG, R. A. Myers, and R. Kraus. Bayer CropScience, Research Triangle Park, NC

Stratego from Bayer CropScience is a premix fungicide consisting of trifloxystrobin and propiconazole. The product is registered and utilized on a number of important U.S. crops, including rice, cereals, corn, peanut, and pecans. In 2005, Stratego was approved by EPA for a Sec. 18 Quarantine Emergency Exemption registration for the control of Asian soybean rust. Stratego has been successfully utilized by growers for the preventative control of the disease during the 20052006 growing season in those areas where Asian soybean rust has been a problem. Stratego has also been broadly evaluated in internal Bayer CropScience and University replicated and nonreplicated soybean trials for the control of foliar soybean diseases, plant health, and yield benefits. Results of these multiyear trials indicate that Stratego is effective for the control of Alternaria leaf spot, anthracnose, Asian soybean rust, brown spot, Cercospora blight, frogeye leaf spot, pod and stem blight, powdery mildew, and Rhizoctonia aerial blight when applied at the R1 to R6 soybean growth stage and/or prior to disease development. In addition, plant health and yield benefits have been documented following application of Stratego. Stratego is expected to receive Federal Sec. 3 soybean registration prior to the 2007 growing season.

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