Bleach solution as a dormant spray for disease control?
Has anyone ever tried using a mild bleach solution, like 10% or even 20%, as a dormant spray in late winter to try to prevent disease?
Last year, I had a LOT of dieback of twigs and smaller branches on apricots due to brown rot attacking the flowers. It was very cool and wet at the time.
Not really a substitute for a proper disease control program, obviously, but bleach is certainly powerful and also very cheap. Rather, I'm thinking of this as augmenting traditional fungicides.
I just had the thought that this might work to "clean up" some of the spores.
I wonder if this would work? Can't see it being very phytotoxic when applied before bud break -- bleach solution is pretty widely used to sterilize plants for tissue culture, I think, and I know I've gotten weak bleach solution on plants when powerwashing my siding, driveway, etc. with no lasting ill effects.
Any thoughts? Or, am I just nuts, and if this would work, would the pros already be doing it?