By Daren Mueller, Department of Plant Pathology
There have been some changes in the availability of fungicides for soybean. Here is a quick summary.
Alto® (cyproconazole, Syngenta Crop Protection) has been fully registered for use on soybean by EPA. The product will be available for use on soybean in Iowa when the new label is approved by the state. Until then, this product will only be available through its Section 18 label for soybean rust.
ProlineTM (prothioconazole, Bayer CropSciences) has been fully registered for use on soybean. Although registered, Bayer will not be pushing this product for soybean in 2008, but it is available. The only diseases listed on the label for soybean are soybean rust and powdery mildew. This product also is available for wheat.
CarambaTM (metconazole, BASF) will NOT be available for use on soybean as a Section 3 product. It still has a Section 18 label for this season for soybean rust, but once the Section 18 is expired this product will only be for use on small grains.
MultivaTM (metconazole + pyraclostrobin, BASF) was recently approved by EPA, but like CarambaTM, will not be available for use on soybean. This product will be available for small grains.
Folicur®, OriusTM and UppercutTM (tebuconazole products) are still expecting Section 3 registration during 2008 season. However, as a backup plan, a Section 18 application will be submitted to renew the expired tebuconazole Section 18 label. Bottom line, the label status for these products is still up in the air for 2008, so stay tuned.
For a complete list of available products for soybean rust, see Using Foliar Fungicides to Manage Soybean Rust – Appendix B.