North American Fruit Explorers mailing list at ibiblio

["Ernest Plutko" <ernestplutko@wiktel.com>]

Bud tissue freezes a degree or two below the freezing point of water
because of the sugars and other organics in the buds.  A coating of
ice would hold the bud temp at 32 F for some time when the air temp
goes below 32 F. This does protect buds as I saw when I lived in
Michigan.

---- Original Message ----
From: hangermayer@isp.com
To: nafex@lists.ibiblio.org
Subject: Re: [NAFEX] heat tape
Date: Tue, 31 Mar 2009 11:07:46 -0600

>Hi Ernest,
>
>Yes, I know that.  What I remember reading though is that water
>already
>frozen on the tree when the low temps hit, somehow protects the buds.
> Since
>the water would be already frozen, they wouldn't give off any heat,
>but
>still, it offers some protection.  Don't know why though.
>
>Mark
>KS
>----- Original Message ----- 
>From: "Ernest Plutko" <>
>To: <nafex@lists.ibiblio.org>
>Sent: Tuesday, March 31, 2009 9:53 AM
>Subject: Re: [NAFEX] heat tape
>
>
>>
>> Freezing water does protect buds.  When water freezes the water
>> molecules stop moving and release energy (as heat) when the water
>> molecules connect together to form ice.
>> ---- Original Message ----
>> From:
>> To: nafex@lists.ibiblio.org
>> Subject: Re: [NAFEX] heat tape
>> Date: Tue, 31 Mar 2009 10:41:39 -0600
>>
>> >We had a narrow miss here last weekend.  Days earlier, weathermen
>> >were
>> >calling for a low of 18F.  With some peach trees in full bloom, it
>> >wasn't
>> >looking good.  I contemplated some ways to try to minimize fruit
>> >loss.  But
>> >I have the same problem as Bill.  When these cold fronts blow
>> >through, the
>> >wind is pretty fierce, and really limits your options.  Covering
>any
>> >trees
>> >is out of the question.  And I question whether sprinklers would
>work
>> >with
>> >20-25 mph winds. I have sprayed potassium lactose before (can't
>say
>> >from my
>> >own experience whether it's effective or not, but some people
>swear
>> >by it)
>> >but it gets pretty hard to spray in strong winds.  It turns out we
>> >got a
>> >good bit of freezing rain, which left about 1/4" of ice on the
>trees.
>> > The
>> >temps only got down to 24.6F.  Strangely, I can't tell that any of
>> >the
>> >blooms died.  At that temp, there should have been 90% bloom kill,
>> >according
>> >to the charts.  I've read before ice can protect buds, but I've
>> >forgotten
>> >how it does it.  Anyone want to refresh my memory?
>> >
>> >Mark
>> >KS
>> >----- Original Message ----- 
>> >From: "William C. Garthright" <>
>> >To: "North American Fruit Explorers" <nafex@lists.ibiblio.org>
>> >Sent: Monday, March 30, 2009 8:43 PM
>> >Subject: Re: [NAFEX] heat tape
>> >
>> >
>> >>
>> >> > A while back I read a summary of some prof. at MU trying to
>delay
>> >blossom by spraying the whole tree with a dilute latex paint/water
>> >mix.  The
>> >idea was to keep the sun off the buds as well as the trunk.  Can't
>> >remember
>> >how long it supposedly delayed bloom, but I'm thinking it was a
>weeks
>> >delay.
>> >> >
>> >>
>> >>
>> >> Interesting, Mark. I might try that next year. I did wonder when
>I
>> >> painted the trunks how far up I was supposed to go.
>> >>
>> >> And my neighbors think I'm loony already, so I might as well go
>all
>> >the
>> >way.
>> >>
>> >> :-)
>> >>
>> >> Bill
>> >> Lincoln, NE (zone 5)
>> >>
>> >> -- 
>> >> Diplomacy is the art of saying "Nice doggie" until you can find
>a
>> >rock.
>> >> - Will Rogers
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