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nafex - Re: [NAFEX] winter kills or not kills

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  • From: John S <swim_at_svc@yahoo.com>
  • To: North American Fruit Explorers <nafex@lists.ibiblio.org>
  • Subject: Re: [NAFEX] winter kills or not kills
  • Date: Sun, 9 May 2010 19:46:27 -0700 (PDT)

Let's not forget evaporative cooling where moving air over a surface can lower temperatures via increased evaporation.



--- On Sun, 5/9/10, Mark Angermayer <hangermayer@isp.com> wrote:

From: Mark Angermayer <hangermayer@isp.com>
Subject: Re: [NAFEX] winter kills or not kills
To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
Date: Sunday, May 9, 2010, 7:48 PM

Ernest,

Some people on this list have noted before wind-chill is a factor in that it
causes desiccation in fruit trees.  While I'm in no zone to test winter
hardiness on typical temperate fruit trees, I have noticed wind-chill plays
a negative role in more tropical natured plants like tomatoes and
watermelon.

Mark
zone 6 KS

----- Original Message -----
From: "Ernest Plutko" <>
To: <nafex@lists.ibiblio.org>
Sent: Sunday, May 09, 2010 6:34 PM
Subject: Re: [NAFEX] winter kills or not kills


Trees don't have an internal heat source so windchill doesn't matter
to them.  Tell me about Federovsk pears.  Must be Russian.

---- Original Message ----
From:
To: nafex@lists.ibiblio.org
Subject: Re: [NAFEX] winter kills or not kills
Date: Sat, 8 May 2010 19:14:14 -0700 (PDT)

>Sorry to hear that.
>
>On the other hand my Golden Spice, Ure, Early Gold and Federovsk
>pears survived -56C with the windchill or -47C without (that is
>-68.8F or -52.6 according to my metric conversion calculator)and they
>all have buds on them about to open up.  Now that temperature was at
>the International airport where my husband works which is about 1/2
>hour drive and that particular night the ATC guys weren't busy so
>they looked it up and we were the coldest recorded place on the
>planet!  Other fruit stuff survived too but is still too small to
>blossom. I should write up an orchard report and post it here
>sometime.
>
>Sarah
>zone 3
>Edmonton, AB
>
>
>> Received: Thursday, May 6, 2010, 11:44 PM
>> Lost two Golden Spice pears, two Ure
>> pears and a Scout apricot from
>> the cold. 46 F below zero is too cold for most fruit
>> trees. Zone
>> hardiness declarations are really doubtful. I planted
>> 20 Antonovka
>> apples last week. They should survive the
>> winters. Not great apples
>> but they are apples. Planted three Evans cherry last
>> spring by
>> covering the graft below the ground. Mazzard
>> rootstock is not hardy.
>> The Evans trees made it though the winter OK.
>> Hopefully, they grew
>> roots from the Evans trunks.
>>
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