Apple Trees
Q.

Apples

Zone 53089 | Brubenzer added on October 9, 2016 | Answered

What is this disease? Are the apples still edible? I put coated red sphere traps on last spring when I was supposed to. How can I prevent this disease? Thanks a million!

    A.
    A.Answers to this queston: Add Answer
    Alisma
    Certified GKH Gardening Expert
    Answered on October 10, 2016

    The raised bumpy areas may be caused by the Capsid bug:
    https://www.rhs.org.uk/Advice/profile?pid=484

    I am not sure what the gray blotches are but they look like they could be either bitter pit or apple skin spot. It could also be a mild case of apple scab. All of these would be safe to eat, but bitter pit could cause poor flavor.

    http://www.ashs.org/news/209044/Study-reveals-causes-of-apple-skin-spot.htm
    http://www.extension.umn.edu/garden/yard-garden/fruit/apple-pest-management/apple-scab/
    http://postharvest.tfrec.wsu.edu/marketdiseases/bitterpit.html

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