Thought I would post the research for others to see.
I’m trying to stay organic. I know I may have to move to Indar eventually, but searching everything before giving up. Currently using lime sulfur and keeping up on all the other cultural maintenance. Only have a small amount of it last year. Diluted 3% h2o2 has all but cleared up blight on my tomatoes for years. Haven’t been able to find anything definitive regarding BR. Found this study that showed negligible results at 20%, but at 30% caused near total disintegration of BR spores. Counterintuitive to try that route at 30% and phototoxicity was high in apples and pears. Curiously peaches were basically unaffected by the 30% and showed no phototoxic burn. I have sprayed h2o2 at 8oz/gallon on all of my fruit trees before without issue. Always at dusk.
I will also be experimenting with raw cow milk/whey this year or the next. Some recent and old school anecdotes give me some hope there. Plus, I’ve got the milk.
I was doing a similar thing that you are doing 15 years ago. I tried OxiDate which is a hydrogen peroxide product, it didn’t seem to do much. But I just used the recommended dose on it. My best luck was with micronized sulfur, lime-sulfur, and Saf-T-Side (smothering oil, not sprayed near sulfur). I tried milk a few times without results, not raw milk though. Then I gave up and got some Indar. I was getting some fruits, but I would lose about half and the other half needed to be processed right after picking or they would rot…
Disappointing that 3% didn’t work better on Brown Rot. Walmart was selling 32oz containers for $1 each. I bought a few to experiment. Glad to read the success on tomato plants. I’ve used 3% to to kill vine bores.
Poop! Forgot to mention that BioSafe Oxidate was also on my possible list. Well now I know. Thank you! I also have OSO Zink based fungicide on my list as well. In researching the milk I found that it was the bacteria in the milk that outpaced the monilinia. So anything pasteurized would have no affect. Whey can be used, but I don’t make cheese.
Ive used Oxidate in the past to try and deal with apple anthracnose. One year i made a dedicated effort with it and went through almost 2 pallets of 5 gallon containers.
The stuff really works whereas everything else that i could use is just a protectant.
I always used the maximum label rate, 1%, and by summer the trees were looking very stressed. This stuff kills everything, in effect sterilizing the orchard. I cant stress enough how very bad this is for the orchard as a ecosystem. It took me 4+ years of re introducing organisms of all types back into the orchard before i started to achieve a balance.
And of course Anthracnose just swept back in like a plague since the trees had been stripped of their natural defence organisms.
has anyone tried Iodine? could help or maybe not, i was going to try it but forgot to. so this year i will. but what is the ratios of water to iodine mix, all experimental i guess.