Alkaline coppers such as bordeaux can reduce the efficacy of other fungicides and insecticides. Some fungicides such as fosetyl-Al are acidic and if applied in association with copper can result in severe phytotoxicity. Always apply copper products to a few plants and observe results until you have gained experience. For triadimefon products labeled for greenhouse use, see different greenhouse rates on label. Bonide Bayleton includes a scoop for small mixtures.
Pines are the alternate host.