For years I could not feel confident that Sooty Blotch/Flyspeck would
not appear late in the year, beginning about
the time of Macoun apple harvest. That was a serious problem, because I did not
understand how the disease developed
and how to prevent appearance of symptoms. Now it
I agree with Kari’s analysis. Sounds like Marssonina. Bring or send some up if
you’d like.
Dan
—
Daniel R. Cooley, Professor of Plant Pathology
Stockbridge School of Agriculture
418 Paige Lab
161 Holdsworth Way
University of Massachusetts, Amherst, MA 01003
Subject: Re: [apple-crop-2] Apple leaf disorder
Dan, Brian, Kari, Mo, and others:
Having read your comments and links, I looked more closely at my
symptoms. I was wrong about its association with yellow delicious breeding. I
can find it in Macoun, Empire, and many others. The symptom
Dan, Brian, Kari, Mo, and others:
Having read your comments and links, I looked more closely at my
symptoms. I was wrong about its association with yellow delicious breeding. I
can find it in Macoun, Empire, and many others. The symptom common to all that
I looked at with magnifying
When this is on a Golden Delicious at this time of year after a summer like
this, it’s likely that it’s necrotic leaf blotch. No pathogen has been
associated with it, so we blame it on bad horticulture and call it a
“physiological disorder”. It’s interesting that zinc and ziram applied in the
tps://webmail.psu.edu/webmail/shell.cgi?timestamp=1362517824>
Twitter: https://twitter.com/drtreefruit
From: apple-crop-boun...@virtualorchard.com
On Behalf Of maurice tougas
Sent: Tuesday, October 09, 2018 12:36 PM
To: Apple-Crop discussion list
Subject: Re: [apple-crop-2] Apple leaf disorde
