Peach disease identification help

Have you spray with products containing copper?
Copper injury and bacterial leave spot are often confused.

Another peach leave issue is a shot hole disease which is a fungal disease.
Coryneum Blight (Shothole) | Intermountain Fruit | USU.

I think you have either a shot hole disease or copper injury.

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No copper. For fungus I just periodically use Daconil.

I hope you do not spray Daconil after fruit form.

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That is probably bacterial spot. If you are in eastern zone 7b it is common there.

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