Submitted to: Integrated Crop Management Conference Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 12/20/2003
Publication Date: 3/15/2004
Citation: Miles, M.R., Frederick, R.D., Hartman, G.L. 2004. Management strategies for the control of soybean rust. Integrated Crop Management Conference Proceedings; 2004.
Technical Abstract: The identification of Asian soybean rust in Paraguay in 2001 and its spread to over 90% of the soybean production in Brazil through the 2003 season has heightened the awareness that this disease may be a threat to production on the continental USA. With the yield losses this disease can cause it will have a big impact on the profitability of soybean production. So how do we control the disease? The pathogen will not over winter in the Midwest. The primary tool in the control of the disease will be the use of fungicides. Many fungicides have been evaluated to control soybean rust. Early research from Asia indicated that mancozeb was effective. The most recent trials in Africa and South America have identified additional triazoles. Other compounds have been identified that reduce disease severity, but yield protection has been inconsistent. Further efficacy trials are continuing in both Africa and South America to identify additional products. There are a total of three fungicides that are registered for use on soybean, labeled for soybean rust and are commercially viable. Quadris is an azoxystrobin, Bravo and Echo are both chlorothalonils. There has been a section 18 exemption request for seven compounds or mixtures of compounds submitted to the EPA by the Departments of Agriculture of Minnesota and South Dakota.