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My black raspberries have what appears to be a blight. the leaves are shriveling and are orange or rust colored. Anything I can do besides removing the infected plants? Mu red raspberries 10 feet away are not affected. Thanks, Mike

I have Kiowa blackberries.
Several years ago, they did the same thing. Leaves turned yellow and the berries shriveled on the vine. Can't remember, but I believe it was a fungus.
Thankfully, I had some growing in a different area.
Only choice was to remove the offending plants and let the soil rest for at least a year.
I've been able to rebuild my "vineyard"(?) with the help of the other plants.

My plants have gone through some hard times.
First, the disease. No berry crop. 😳
Then, the next year, a hail storm came through and stripped all the blooms off. Bet I didn't get a cup of berries. ☹
Then, as hardy as blackberry vines are, the "Deep Freeze" of 2021 lasted about 2 weeks and actually froze the vines back. Might have made two quarts of berries! 😥
Not sure whether it was drouth or what, but about half my vines died back this year! I'll get a "half crop" this year at best! 😡

That would work, but there are organic bio-fungicides that I'd give a try.

Here you go

berry blight

I think fire blight can affect berries too.

What's more "organic" (orgasmic?) than rip out the plants, rest the soil and replant?

What I'd recommend is both. Rip the infected plants out, treat what remains with a bio-fungicide, and replant. And treat your new plants too.

Fungus diseases have a way of coming back.

If it's fire blight, that's bacterial as I recall. Fungicide won't work as far as I know. Cultural practices might help. I've had it kill a couple of young fruit trees and some roses too. Nasty stuff.