Re: 70 to 25 in 48 hours, moving air, water
- To: <perennials@mallorn.com>
- Subject: Re: 70 to 25 in 48 hours, moving air, water
- From: "* &* B* H* <c*@saltspring.com>
- Date: Thu, 12 Mar 1998 13:08:46 -0800
My 2 cents worth.. Water CONSUMES heat as it evaporates, however, it does
give off large amounts when it freezes - thus preventing temp from dropping
much below freezing. Air circulation helps because it prevents cold air
"pools" from forming. In very cold weather, wind is a problem because it
tends to dessicate foliage and buds, killing them (perhaps a coating of ice
is also beneficial because it prevents this).
Brian
http://vvv.com/~amdigest/cusheon.htm
----------
> From: Matt Trahan <matttrahan@ecsu.campus.mci.net>
> To: perennials@mallorn.com
> Cc: Robert Sperl <rsperl@ameritech.net>
> Subject: Re: 70 to 25 in 48 hours, moving air, water
> Date: Wednesday, March 11, 1998 10:21 AM
>
> Hi Robert,
> Moving air will usually inhibit frost formation. We went down to 28 last
> night, but no frost! The wind has been blowing 10 to 15 miles an hour. It
> dries out the plants a bit but it's a world of improvement over ice
> crystals sitting on the leaves and fruit blossoms.
>
> Spraying them with water has two parts. The first works when the temp
will
> hover just above/around freezing. The relatively warmer water is supposed
> to help generate a small amount of heat as it evaporates, and it helps
> prevent frost formation on the wet leaves.
> The second choice, if it's going to be extremely cold out, is to form a
> solid thin layer of ice on the plants. It's supposed to be a good short
> term insulator from even colder temps. It's supposed to keep the plants
> around 32 degrees and slow down the thaw process to a less distructive
pace.
>
> This is what I 'remember' being told to me. I would love to hear a
clearer
> answer from some one who knows more.
>
> We made out fine last night with the wind, I hope everyone else in frost
> border states was just as lucky!
>
>
> >------------------------------
> >
> >Date: Tue, 10 Mar 1998 16:54:22 -0600
> >From: Robert Sperl <rsperl@ameritech.net>
> >Subject: Re: 70 to 25 in 48 hours
> >
> >I was listening to the radio and heard that commercial growers were
> >spraying trees down several times during the night and keeping fans on
> >them???
> >---------------------------------------------------------------------
> >
>
> Matt Trahan <matttrahan@ecsu.campus.mci.net>
> USDA zone 8, Sunset zone 31, AHS heat zone 7, northeastern N.C.
>
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