[nafex] Re: trees not leafing out
edforest55 at hotmail.com
edforest55 at hotmail.com
Wed May 23 08:26:50 EDT 2001
Thanks all for responding,
After reading all your thoughts I think that what happened to my
pears was that, in a normal year fall translanting a pear tree might
be fine but last fall was not because of the early ground freeze,
although it didn't go more than an inch into the soil, (unlike
Bernie, we had a lot of snow cover) it came at a vulnerable time for
the tree, not having gone fully dormant and having been just
transplanted. Those pears that weren't transplanted AND had sod had
those two things going for them which was perhaps just enought to
make the difference.
I wanted to ask Bernie how I should go about determining if the roots
are not transporting water to the trunk.
I intend to apply Wiltpruf to those that are still alive and
PS I am sure there is a lot more ot be said in more
botanical/biological terms, such as the role of hormones, sugar
levels, etc and anyone wanting to fill us in on those would be most
welcome to do so.
--- In nafex at y..., Bernie Nikolai <Nikolai at v...> wrote:
> Here up in Edmonton I had two beautiful 4 year old Honeycrisp on
> didn't leaf out. The trees went into the winter in super health
and we had
> a very mild winter, only down to -30C or -20F. Only the trees on
> cultivated ground died, and my other Honeycrisp in sod on M26 are
> out normally. I hacked away at the dead trees and found the trunks
> just not getting any moisture from the roots. It appears root
> severe damage was caused to the M26 due to the almost complete lack
> we had this year. This caused the temperatures to dive below the
> -12C level at the one foot level under the ground. I understand it
> -14.1C at one foot under the ground level in cultivated soil at the
> government test facility. As a point of interest 4 or 5 years ago
we had a
> test winter with temperatures at the government test facility
> -43.25C, about -47F. Yet due to the snow the minimum soil
> one foot debth only hit a low of -6.1C all winter. Snow cover
makes a HUGE
> difference. As a matter of interest two trees immediately beside
> Honeycrisp were on Bud 490, and are leafing out normally. This
leads me to
> believe Bud 490 is hardier and a safer bet for a zone 3 climate in
> years when there is very little snowcover. My guess is most of the
> not leafing out, especially in a normal or mild winter, have
> severe root damage caused by a lack of snow which allowed the soil
> temperatures to get too cold, even in a mild winter.
> Bernie Nikolai
> Edmonton, Alberta
> At 01:03 PM 5/22/01 -0000, you wrote:
> >In Indiana, Maine, and Wisconsin I have been hearing reports of
> >trees not leafing out.
> >We had a very very mild winter here in S WI, and an average
> >no surprises. The only unusual occurrence that I am aware of is
> >we had an unusally late warm fall with a sudden cold spell, all of
> >trees had vibrant green leaves when this cold hit, killing the
> >Two types of trees are having trouble for me this spring:
> >Pears that were transplanted last fall, (had to do it when they
> >had their green leaves as the soil was freezing). The pears that I
> >didn't transplant didn't have any problems. I didn't spring
> >transplant any pears to compare them to.
> >Peaches, both those that bore a heavy crop and those that didn't
> >at all.
> >All other trees seem ok. I fall transplanted many apples no
> >so far.
> >Have others had problems in fall transplanting pears?
> >Why do you suppose my peaches are struggling?
> >Many thanks
> >kevin b.
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