Apple blemish and how to treat
We have a six way espalier apple tree and noticed this year that many of the apples had a unusal blemish on them. After doing some research online, I think it may be a form of scab (pictures attached), but the skins don't appear to have the traditional bemishes seen from scab. Most of the leaves are off the tree and I have been raking and disposing of the leaf matter, but would like to know if this might require a dose of copper or other treatment. I know not to mix this with a dorman oil treatment. Any help would be appreciated..and thank you in advance.
Multnomah County Oregon
Thank you for the fast response.
Here are two images (in better focus) for your insight. In looking at the blemishes and skin depressions on our apples this year, I notice that there is a small black spot at the start of the depressions, that looks like a insect bite location.
The tree is over 10 years old, and has six different apple varieties on a disease resistant root stock. I'll see if I can find our documentation from when we bought it.
The tree was hand watered at the base during much of the summer (once a week), but when we got to the hot spells last year, we resorted to watering our entire garden (and the apple tree) via an overhead sprinkler once every two days (early in the morning) for about 10 minutes. This tree was on the far edge of the sprinklers watering pattern, so don't think it received an over abundance of water (less than my hand watering)
Thank you again for your help.