Is a combination of phosphorous acid and activated peroxide that provides a one-two punch against diseases. The activated peroxide helps the phosphorous acid active ingredient to have a broader effect on targeted organisms.OxiPhos can be used throughout the growing season to prevent and control diseases caused by the oomycete group of pathogens. Powerful dual mode of action. Can be used throughout growing season. Controls and prevents pythium, phytophthora, and downy mildew.