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Leaves Yellowing #868611

Asked May 15, 2024, 5:23 PM EDT

Do you guys know what’s happening with my Apple tree? It happened on my Asian pear too last year. I attached a picture of the Apple tree. It’s a multi variety grafted tree. And what’s the treatment if any. Thank you so much!

Marion County Oregon

Expert Response

The image shows the disease Apple Mosaic which is due to a virus. The yellowing is not uniform and I can see what we call ring spots in some of the patterns. I suspect one of the cultivars grafted on had it and so now they all will have the problem. There is nothing we can do for virus diseases of tree fruit. You read up more about it here:https://pnwhandbooks.org/plantdisease/host-disease/apple-malus-spp-apple-mosaic
Jay W. Pscheidt, PhD, Professor Replied May 16, 2024, 4:28 PM EDT

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