[nafex] blackberry research

Tom Volkening volkenin at mail.lib.msu.edu
Tue Jan 29 14:18:20 EST 2002


Del,
Some folks at the University of Arkansas -  Fayetteville, Department of
Horticulture are also working on primocane fruiting blackberries.  The have
developed a number of cultivars.  I also pulled some things off the web that
mention primocane fruiting blackberries.

"Evaluation of single and double cropping systems of primocane-fruiting
blackberry selections - Chrislyn A. Drake and John R. Clark
 Primocane-fruiting blackberry (Rubus subgenus Rubus Watson) selections have
recently been developed by the University of  Arkansas, but proper
field-management practices have not yet  been determined. One unknown aspect
of management is the  difference between double cropping (producing a crop
on both  the floricanes and primocanes) and single cropping (producing a
crop on only the primocanes). Many researchers have observed  that
competition exists between flori- and primocanes of  floricane-fruiting red
raspberries (R. ideas L.) and trailing  blackberries. The objective of this
study was to determine the  effect of floricane cropping on primocane
performance. Two  plantings, one in Fayetteville, Ark. and one in
Clarksville, Ark.,  were used, and selections APF-8 and APF-12 were included
as  genotypes. The two treatments included removal of floricanes  from
plants in the primocane-fruiting only group in early spring  before the
floricanes broke dormancy, and a non-removal  control. Data collected
included date first primocanes reached 1  m (primocane emergence), number of
primocanes, yield of primocanes and floricanes, average berry weight of
primocanes
and floricanes, and total berry number for primocanes. Results  showed that
the impact of cane management on most variables was not significant, except
for primocane emergence, which was delayed by non-removal of floricanes with
one of the genotypes. Results were consistent at both locations.  Additional
findings of the study will be discussed."

"Make plans to come to the North American Berry Conference, February 3-6,
2002! The conference this year will be held in conjunction with the
Southeast Strawberry Expo at the Sheraton Imperial Hotel in Durham, NC.
Sponsoring organizations of the conference are the North American Bramble
Growers Association, North American Strawberry Growers Association, the
North Carolina Strawberry Association, and The International Ribes
Association. We expect there to be a large crowd from all over and an
extensive trade show for this conference.

Tuesday's program opens with a general session spotlighting successful
growers, followed by concurrent breakout sessions. Bramble sessions, held
throughout the day, will include topics such as primocane fruiting
blackberries, greenhouse raspberry production, and bramble breeding
programs. A number of other sessions, such as alternative markets and
value-added
processing will appeal to growers of all small fruits." 

Tom Volkening
Engineering Library
1515 Engineering Building
Michigan State University
East Lansing, MI 48824-1226
Phone:  517-432-1498
Fax:      517-353-9041
Email:    volkenin at msu.edu
              volkenin at egr.msu.edu


-----Original Message-----
From: del stubbs [mailto:pinewoodel at hotmail.com]
Sent: Tuesday, January 29, 2002 10:38 AM
To: nafex at yahoogroups.com
Subject: [nafex] blackberry research


I was talking to a berry researcher for a moment this weekend. He mentioned 
hearing of some new (10 year) research somewhere in the eastern states with 
blackberries that bear on 'bull' canes, much like fall bearing raspberies. 
Are first year blackberries also called primocanes like raspberries? He 
mentioned a name - Henry or Harvey Schwartz of Maryland, as a possible 
resource for this.
Does any of this ring a bell? If true , it is just possible I could grow 
fall bearing blackberries here. Thankyou for any help, Del Stubbs Z2/3










Del Stubbs

ag zone 2/3

Pinewood Forge


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