Pristine 38WDG contains a combination of two active ingredients (pyraclostrobin, 12.8% and boscalid 25.2%).Pyraclostrobin, a strobilurin, is in the same general class of chemicals as Abound, Sovran, and Flint (strobilurin Pristine is registered for use at the rates of 6-10.5 oz/A. A maximum of six applications may be made per season). The label states, “Do not use on Concord, Worden, Fredonia, or related varieties due to possible foliar injury. Experience in New York suggests that Corot noir and Noiret may also be sensitive to Pristine.”