Volume 50 Number 2 Article 17 Pages: 98-104
Year 1996 Month 4
Title: Flower Bud and Shoot Hardiness of Southern Highbush Blueberry Cultivars
Authors: J.R. Clark, R. Bourne and E. Gbur
Citation
Abstract:
The southern highbush blueberry (Vaccinium
spp.) cvs. 'Blue Ridge,' 'Cape Fear,' 'Cooper,'
'Georgiagem,' 'Gulf Coast' and 'O'Neal,' and
selections A-109 and G-616, the rabbiteye (V.
ashei Reade) cv. 'Climax' and the northern
highbush (V. corymbosum L.) cvs. 'Bluecrop'
and 'Sierra' were evaluated in December 1993
and January and February 1994 for shoot and
flower bud damage following exposure to 0, -5,
-10, -15, -20, -25 and -30C in a programmable
freezer.
All cultivars were hardier than 'Climax'
at all sample dates.
Hardiness among several
southern highbush clones was similar to that for
northern highbush at several dates and temperatures.
The hardier southern highbush clones
were A-109, 'Blue Ridge' and 'Cape Fear 'Sierra' exhibited
equal or greater hardiness than 'Bluecrop,'
depending on date of sampling and
temperature.
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