[NAFEX] Apple Scab
mddorogi at comcast.net
Fri May 30 21:18:09 EDT 2008
Yeah, I'm up to 400 bags in my Cox's Orange Pippen.9 other trees to go. :-)
I have an Ashmead's Kernel. It always sets heavily and early too. I don't
know if it's genetically prone, but mine is certainly more prone to maladies
than any other tree I have, not just scab, but for some reason even the PC
and codling moth seem to like it the most. It's been hard to get apples to
mature on that one. A counter example is my Kerry Pippen - I've never seen
scab on that one, even though it's practically underneath a motley wild
crabapple. The bugs don't even bother it that much.
The last two years I've resorted to using Captan to keep the trees in good
shape until I can get the bags on. Typically I do one spray around pink
(captan + malathion), captan again during bloom, and once after petal fall
(again with malathion). I seem to get very good control of scab; last year
the leaves were nice and robust all year, as opposed to prior years where
there was scab all over.
It's taking me so long to bag this year, I threw on another malathion spray
the other day. So far so good, still no major PC damage.
From: nafex-bounces at lists.ibiblio.org
[mailto:nafex-bounces at lists.ibiblio.org] On Behalf Of Doreen Howard
Sent: Friday, May 30, 2008 5:32 PM
To: North American Fruit Explorers
Subject: [NAFEX] Apple Scab
I've spent the last few days bagging apples and Asian pears. Have gone
through 500 bags, and I'm only half finished. These trees are all on Bud 9
and under nine feet, but the fruit set this year has been heavy.
I have two russet apples, Ashmead's Kernel and Pitsmaston Pineapple. The
other six apple trees are either disease-resistant like Pixie Crunch or
antique varieties with smooth skins. I've noticed that both of the russets
are very prone to apple scab, yet the other trees aren't. Last season, the
russets had major leaf damage from the scab and the few apples I didn't bag
were riddled with scab. As I bagged today, I'm already seeing signs of
apple scab on the russet tree leaves. None on the other apple trees,
Are russets genetically prone to the disease or is this coincidence? BTW,
after spending 15 years as a newspaper reporter and editor, I've learned
that nothing is ever a coincidence.
IL-WI Border, Zone 4b
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