Can I cure soybean rust infections by applying fungicide?
The strobilurin fungicides prevent new infections and are most effective as a preventative application before infection has occurred. The triazole fungicides can cure early stage rust infections and are preferred as a first application when rust symptoms are visible. None of these fungicides can cure advanced lesions in a leaf. Both strobilurin and triazole fungicides can be viewed as preventative. However, these products have a limited period of control and more than one application of fungicide may be required if SBR occurs early in the growing season.
