09fall.qxd 9/18/09 11:37 AM Page 23
Damage mostl
Between the Vines
P
y a matter of variety
n
ARC researcher finds
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ty winter didn’t kill
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1_4_Kelowna copy.pdf 5/21/2008 12:10:06 PM
By Judie Steeves
I
t's good news for most grape
growers. Except in frost pockets
Similkameen Valleys, overall, there
throughout the Okanagan and
wasn't that big a reduction in grape
yield and not that much vine death
due to last winter’s colder weather—
and the damage that did occur was
variety-specific.
conclusion of a study conducted this
In a nutshell, such is the initial
JUDIE STEEVES
spring by Carl Bogdanoff, viticultural
Yellow foliage indicates plant stress caused by a winter that was frigid,
researcher at the Pacific Agri-food
but not enough to produce widespread fatal results.
Research Centre in Summerland,
following five visits to some 2,400
overall there's been a 20 per cent
vines between Arrowleaf Cellars in
decrease in yield from winter injury,
to mix the air and prevent cold
the north and the Similkameen
but he says there was a good bloom
temperatures from “pooling” in low
Valley in the south.
once temperatures warmed up this
areas. During windy weather, he said
spring, and, even though bud break
temperatures are similar throughout
break, then cluster counts, and made
He began his visits early with bud
was a couple of weeks late, by bloom
the vineyard.
his last visit in June after shoot-
plants had caught up. fan added three or four degrees by
In one vineyard, he said, use of a
thinning them as growers would.
frost pockets.
Most of the damage occurred in mixing the air and reducing damage
from cold, and a few degrees can
put a figure on it, he estimates
Although Bogdanoff hesitates to
of fans during calm weather helped
However, he did find that the use mean the difference between life and
death for grapes, at near-lethal
679 Willow Park Road
Kelowna BC V1X 5H9
Tel: 1-250-765-6988
Toll Free: 1-877-861-3444
C
www.greatlittlebox.com
M
Y
CM
From harvest to the shipping dock,
MY
all you need is Great Little Box.
CY
CMY
K
RICHMOND
VICTORIA
KELOWNA
EVERETT
British Columbia FRUIT GROWER • Fall 2009 23
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