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Correction-by NO (below) I meant N. My spell
checker got me in trouble. Instead of hitting the ignore button, I was
hitting the change button, changing N to NO. Either that or I've been
breathing too much Nitrous Oxide N2O.
Mark
KS
----- Original Message -----
From: Mark &
Helen Angermayer
Sent: Tuesday, April 08, 2008 2:27 PM
Subject: Re: [NAFEX] help with peach problem
identification
Thanks Ed,
I looked pretty close and didn't see any
eggs. I assume they can be seen with the naked eye?
In terms of extension growth, the early season
shoots were the most vigorous and had hardly any lesions (3 to 4' of
growth). Some of the later (branched) growth was much less
vigorous (grew maybe 8" or less) and had (by far) the most
lesions. As a general rule the more vigorous trees have this problem
much less. We had a water problem last summer. June was a
very wet month (12" of rain inside 4 days) and I watered too much after
that. I think I remember too much water inhibits NO uptake, so maybe
that's it. I've never put much NO on except what is contained in
Phosphorous formulations. About 50lbs on my one acre last
year.
Mark
KS
----- Original Message -----
From:
Ed Fackler
Sent: Tuesday, April 08, 2008 12:47
PM
Subject: Re: [NAFEX] help with peach
problem identification
Mark:
Regarding iding for
scale, you should see "eggs" (flat, slightly puffed up) on the
bark.
Since the symptoms didn't show up on
leaves last year, I'd strongly suspect that nutrition is the culprit
Also regardless of what a soil/leaf sample may imply, peaches are heavy users
of N.
Was there sufficient extension
(new) growth last year?
ed
On Tue, Apr 8, 2008 at 1:29 PM, Mark & Helen
Angermayer < hangermayer@isp.com> wrote:
Thanks Dennis and Ed,
The scab pictures on the Kearneysville site
look a lot like my twigs. And I've never sprayed for scab. The
only thing that puzzles me is that I didn't recognize any scab on the leaves
last summer (obviously there was no fruit). The leaves looked normal
and healthy except for some mottling. I sent a leaf sample in for
nutrient analysis and it came back OK in N and P but very low in Mn. I
thought about doing a foliar spray this year for Mn but thought I'd
give it one more season, and ease up on the watering to see if that doesn't
straighten it out. I'll keep in mind about the scale. I'm not
sure I could identify it if I saw it. Any easy way an amateur can tell
if it's scale?
Mark
KS
-----
Original Message -----
From:
Ed Fackler
Sent:
Tuesday, April 08, 2008 11:02 AM
Subject:
Re: [NAFEX] help with peach problem identification
Additionally those symptoms could be caused by inadequate
fertility (N and P especially) or scale can/will cause these
symptoms.
On Tue, Apr 8, 2008 at 11:48 AM, <dmnorton>
wrote:
Mark,
-----
Original Message -----
Sent:
Monday, April 07, 2008 2:13 PM
Subject:
[NAFEX] help with peach problem identification
I've got a small peach tree
problem. Every year I get these black lesions on some of the new
peach shoots. It only occurs on new peach shoots, and they seem
to outgrow it over time. When the shoots get bigger, the
spots fade and eventually disappear.
I haven't paid enough attention, so I
can't say for sure, but the black spots on the new shoots seem to get
worse over winter. I have a spray program for leaf curl and
haven't seen any of leaf curl on these trees. Similarly, I
haven't seen any shot hole on the leaves. Whatever this
is doesn't kill the shoots completely, but does kill some of
the leaf and flower buds. It seems to be worse on trees that are
having problems already. For instance, the pictures of the
diseased shoot below came from a small tree I over-watered last
summer. Vigorously growing trees don't have much problem with
it. Any ideas would be appreciated.
Thanks,
Mark
KS
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