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Apple tree virus or blight #772713

Asked September 22, 2021, 3:00 PM EDT

All the leaves have fallen off several of my apple trees. Is there a blight or virus going around that is causing this problem?

Clinton County Michigan

Expert Response

( hold comment, from Terri)




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Hello Donald,

I have some questions for you:

Could you please send me some clear and close-up images of the tree(s) and some individual leaves (can you put the leaves on a white piece of paper or something with a white background)?

Is this a commercial orchard or a home orchard?

For pests and diseases, do you have a spray schedule for your apple trees?

Have you sprayed any pesticides around your apple trees?

I suspect this might be Apple Scab, details are at this link:

https://www.canr.msu.edu/resources/apple_scab

Here are two (2) references that are helpful:

Midwest Home Fruit Production Guide at this link: http://plantpathology.ca.uky.edu/files/mw_home_fruit_productn_b591.pdf

Midwest Fruit Pest Management Guide at this link: https://ag.purdue.edu/hla/Hort/Documents/ID-465.pdf

Please let me know - Thank You!!

An Ask Extension Expert Replied September 22, 2021, 6:22 PM EDT

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