What are my odds of beating brown rot organically?
Brown rot is firmly entrenched in my small front yard orchard. I've lost my entire stone fruit crop (nectarines and Japanese plums) to brown rot for three years running. I've tried good sanitation, but I haven't yet tried spraying. I'd planned to simply replace the trees with something with low disease pressure (persimmons, figs, mulberries, etc.), but I'm considering giving them one more year and implementing an aggressive (organic) spray regimen. I recall that scottsmith and harvestman have made the point in past threads that controlling brown rot with organic sprays isn't an easy task (especially in the humid southeast). So...given past crop failures and the limitations of organic controls, do those of you with more experience think my odds of success are at all favorable? I'd be thrilled if I could salvage even a partial crop.
My tentative plan is to use a combination of horticultural oil (Monterey Horticultural Oil) and copper fungicidal spray (Liquicop) for dormant sprays, followed by alternating micronized sulfur and Serenade sprays once the trees are in leaf.