[NAFEX] bitter pit question

Ed Fackler ed.fackler at gmail.com
Wed Sep 23 13:23:12 EDT 2009


     If there are symptoms on the foliage which (at first glance) appears to
be cedar apple rust, the problem could be related to a disease called
frogeye leafspot (on apple....black rot on grape).  Otherwise I don't have a
clue.  Sundance is hypersensative to frogeye.


On Wed, Sep 23, 2009 at 1:19 PM, Anton Callaway <marillen at earthlink.net>wrote:

> I have a young 'Sundance' apple tree the produced its first crop this year.
>  The fruit, as it matures, develops sunken purplish regions that are very
> bitter to taste and have dead brown cells underneath.
> However, it's not classic bitter pit in one sense... the lesions are mostly
> on the stem end of the fruit, not the calyx end.  How common is that
> distribution?  Is there something else it could be?
> Some background on this tree that may be informative... It was the one
> apple tree that I did not thin adequately, thus the crop was too big for the
> tree.  Also, it received calcium acetate sprays approximately every other
> week from petal fall to midsummer (which I would think would reduce bitter
> pit).  No other trees in the orchard have this disorder and all other apples
> got the calcium sprays.
> Thanks in advance for any thoughts on the subject.
> Anton
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