I use T. Harzianum for root rot, fusarium, damping off etc. It need to be in contact with the roots to work symbiotically colonize the roots and deny pathogens space to attack. Don’t think it works as a spray.
This study found trichoderma fungus as a beneficial microbe that it helped fungal foliar infection,
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We are zone 7 and our Contenders need maybe another 2 weeks. They are a nice color, but too small. By comparison, our Loring peaches are ready now…or maybe this weekend. By the way, thank you for the THINNING suggestions. This is only our 3rd year so we were not ready this season when we suddenly ended up with broken branches from hundreds of baby peaches. We will do better next year.
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This is the first year I’m seeing brown rot in my fruit. Luckily but on peaches. But some of the plum got it bad. 
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Euro or Asian plums?
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Nice looking peaches. I like the Contenders I have been getting over the years at my location.
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Asian…Euro is fruiting for the first time this year and only really small still…
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Both of my Euro and Asian plums have got brown rot after a few years. All stone fruit I grow have brown rot except for apricots. They ripen very early, too early for brown rot.
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Here in the Northeast, your description of what happens is pretty much universal. For plums also.
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Agreed. The Elberta is a good peach that delivers early with less pest pressure and I’ve gotten some great peaches off of mine in the past several seasons. But I nevah skimp on the spray program that UT Extension advises for all my peaches and apples. I tried not spraying one season years ago and found out why they advise their spray programs. Anywhere south of the mid south where folks are really successful at fruit orchards they’re using a spray program.
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I talked to the manufacture of root-shield, they said the open air environment isn’t suitable for Trich to colonize the surface as they do in the soil. This paper talks about culturing Trich and spraying the concentrated isolate not sure how this can be done outside a research lab.
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Thanks
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@wfwalton a fungicide that contains trichoderma variant shown to be stable in phyllosphere. I don’t know if this is available in the US yet.
https://ordspub.epa.gov/ords/pesticides/f?p=PPLS:8:7127739580517::NO::P8_PUID,P8_RINUM:528418,92083-2
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Thanks for sharing! THis looks promising. It is registered currently only in the state of California.
Here is link for VINTEC
Vintec is a biological fungicide and contains spores of the beneficial fungus Trichoderma atroviride strain SC1.
VINTEC - Bi-PA