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The Panel which evaluated wines June 16, 2008 consisted of Jim Tiedeman, Certified Specialist of Wine, Society of Wine Educators; Michael Walsh, Wine Educator at various venues including The Innkeepers Kitchen in Dilworthtown; Kevin Donahue, holder of diplomas from the Wine & Spirit Educational Trust (London), Philippe McCartney, wine instructor at The Restaurant School, Philadelphia; Caressa Canfield, sales Specialist with Diageo; Amy Cava, owner and president of Vino Cava LLC a specialty wine importing company and Roger Morris, wine writer for the Wilmington News Journal.
An abbreviated version of the article about the August 2007 seminar the PQA Group sponsored which appears in the January/February 2008 Vineyard & Winery Management Magazine appears below.
Saving Eastern Cabernet Franc
Better Clones and Rootstocks
Key to Improvements, Say Researchers
Story by David Falchek
Last summer, Penn
State Enology Extension Agent Stephen Menke and vinifera growers of the
Pennsylvania Quality Assurance Group hosted a seminar titled "Succeeding
with Cabernet Franc." Although cabernet franc is widely planted in
Pennsylvania, Mr. Menke found the quality variable, so variable that he
and others wondered if the state should be relying on it at all. As he
and others explored the issue and compared successful cabernet francs
with less successful, they found a litany of wrongs. Cabernet franc, if
done right, is well worth doing in Pennsylvania and other areas in the
East. Attended by growers and winemakers throughout New England and the
Mid-Atlantic, they explored why eastern cabernet francs weren't as good
as they could be and what they could do to realize cabernet franc's
promise.
As it turns out, most of the problems came with that first generation of
vines. After earning kudos from college viticulture programs, growers
ordered vines that were between the worst possible clone and rootstock
combination. The session showed a concerted effort to do better.
Very winter hardy and a slightly early ripener, cabernet franc has a
good track record in cool, moist, disease-prone climates, showing well
in Cornell University test vineyards. Growers reported the vines
survived cold winters and were productive. In the late 1980s, Bordeaux
winemakers touring the Finger lakes were skeptical of cabernet sauvignon
and merlot they encountered. Don't view cabernet franc as a supporting
player, they advised. Where it is well adapted, cab franc will surpass
other Bordeaux varieties, they said.
WHAT WENT WRONG IN THE BEGINNING
The buzz had begun. This initial wave of interest predated the awareness
of other critical issues, such as the grape variety's clone and the
rootstock grafted to it. Most growers, as Pennsylvania pioneer Dick
Naylor confessed, had some cab franc tacked onto a nursery order. Many
aren't sure what clone or rootstock they have.
Many pioneers had the worst of all worlds: California-adapted clone CA4
grafted on vigorous rootstocks such as 5BB and S04. In the East's
fertile soils, the combination exacerbated overcropping, creating
monster canopies that push outrageous yields that contribute to
unripeness and off•putting herbaceousness. Growers didn't help. Most
viewed cabernet franc as prominent Pennsylvania grower John Weygandt of
Stargazers' Vineyards does: "an iron-clad grape." Undercut from the
beginning, cabernet franc was relegated to the worst parts of the
vineyard as choicest sites went to its more highly esteemed Bordeaux
siblings, merlot and cabernet sauvignon.
"I always said we would never achieve greatness with cabernet franc,"
said Virginia winemaking consultant Tom Payette. "Now I realize that
we've stuck our kid in the mud. It's no wonder he can't run." The
seminar, and the wines, showed that improvement is under way.
EXPERIENCE FROM THE LOIRE VALLEY
Eastern vinifera pioneers may have been modeling the wrong region.
Bordeaux's northern latitude is often cited as a defense for planting
its varieties in the East. Bordeaux, which means "Bordering Water,"
enjoys a maritime climate with warm equatorial currents coming into the
Gironde estuary. Most eastern growers experience cool, continental
climates.
The loire Valley is among Europe's northernmost grape growing regions,
confronted by threats of early frost and irregular ripening. Loire's
low-clay soils are similar to those in some parts of Pennsylvania, the
Shenandoah Valley, and New York, although cabernet franc metabolizes
better in clay soils than cabernet sauvignon or merlot
"If we want to succeed with cabernet franc as a varietal wine, we need
to look at places that are successful,~ Mr. Weygandt said, citing middle
Loire Valley regions such as Chinon, Samur, Anjou and Bourgueil, where
cabernet franc is the dominant red.
The group invited Jean Hubert Lebreton, a fifth generation winemaker
whose family owns Domaine Des Rochelles in Anjou cultivating 150 acres.
He recognized the similarities between the Eastern wine industry and the
Loire Valley of the 1970's, viewed as a maker of bulk wines when
Lebreton's grandfather planted cabernet franc. "In France, they don't
say 'Anjou,' they say 'Bordeaux' or 'Burgundy,' " he said. "But we have
no tradition so we go faster in finding solutions. It is like that with
you, competing with California."
Many of the sites where Lebreton's family first planted cabernet franc
were not ideal. His family recently hired a geologist to take soil core
samples, dig row trenches, and examine root penetration and hydrology_
"We've done mistakes not matching varieties with soils," he said. In
addition to green harvesting and aggressive canopy management, Rochelles
sprays the plant hormone ethephone. The growth regulating spray, applied
when secondary clusters are flowering eliminates green berries in
otherwise ripe clusters, Lebreton said.
For calcareous soils, they grafted to the chlorosis-resistant rootstock
41B. Iron soils were reserved for dry whites. Friable green schist went
to cabernet franc. Iron red soils with decomposing slate went with
cabernet sauvignon. Rochelles uses a vibrating sorting table and
vinifies and ages each parcel separately, using delestage.
Lebreton brought two impressive wines. Anjou Rouge L'Ardoise, 2006, was
fresh with bright fruit, licorice, smoke and fine grained tannins. His
Anjou Village Brissac, 2005, was a warm vintage that showed caramel,
ripe fruit, and raspberry. Neither use oak. "My father and I seek the
spicy flavor of the fruit. We have no history about oak aging," he said.
The Loire's success with cabernet franc has gone largely unrecognized by
the market. Few wineries in the East are deterred from creating
"Bordeaux-style" wines. As one New England winemaker lamented, the owner
enjoys talking about his "Bordeaux style wine." "Loire style" doesn't
have that ring.
CLONE AND ROOTSTOCK SOLUTIONS
Virginia•based viticulturist Lucie Morton talked about the right clones
and rootstocks. In addition to creating monster canopies, clone CA2 is
susceptible to leaf roll virus, which is another contributor to delayed
ripening. Three clones considered superior included 214, noted for
raspberries and violet aromatics; 327 distinguished by low vigor and
wines of structure; and 623, which yields a good wine and could be color
supplement.
Rootstocks 101-14 or Riparia Gloire would match fertile sites, since
they inhibit vigor. The 101-14 is also nematode tolerant. Low-vigor
sites would do well with 1103 Paulsen. Sandy, gravely, dryish and
shallow soils could use 3309. She told the group to avoid S04 or 5BB
unless the vineyard sits on solid rock with no irrigation. An advocate
of diversity, she recommends multiple clone and rootstock combinations.
She suggested no-spur, two-cane pruning and one-meter spacing and
training to allow leafing on the east side of north-south situated rows.
Front-loading effort and thought before establishment, she said, pay off
with less time, work hours, and equipment fighting monster canopies that
can result from poor clone and rootstock selections. For those who want
to make a Bordeaux blend, Morton recommended 40 percent each cabernet
franc and merlot, 10 percent cabernet sauvignon, and five percent each
of malbec and petit verdot. "Everyone wants to know how to hide the
green flavor; oak will hide it but also hide the [fruit] flavor of
cabernet franc," she cautioned.
UNDERSTANDING PYRAZINES AND CABERNET FRANC
Something else could cover the greenness: fruit character, noted Gavin
Sacks, Ph.D., assistant professor of enology at Cornell University. He's
studying the compound pyrazine thai causes herbaceousness. Sensory
panels found relatively low levels of pyrazines in cabernet franc
objectionable while finding wines with more pyrazines, such as Bordeaux
and sauvignon blancs, acceptable. The difference was the fruit. Less
fruit character increases the perception of greenness.
He also found that pyrazines form a vegetative tag team with grass-like
hexanol, a compound found mostly in grape stems. Their synergy can push
a wine's greenness to objectionable levels, Dr. Sacks found. Destemming,
gentle handling, and prompt settling and racking can keep hexanol in
check.
In the cellar, there's no known way to cut pyrazines. In the vineyard,
Mr. Sacks recommends pre-veraison leaf removal and canopy management
that minimizes leaf-on-leaf shading. Ample sunlight won't burn off
pyrazines, he said, only physiological rip. ening reduces them.
A tasting of eastern cabernet francs showed that many were making the
most with what chance and terroir dealt them, curtailing greenness and
expressing fruit. To atone for past sins, quality Eastern producers are
pruning and trimming the hydra-like canopies and dropping excess grape
dusters several times a year to promote full ripening. Hand sorting is
more common than in the past.
The resulting grapes and wines are riper and less herbaceous. Word is
spreading about the right cabernet franc clones-originating, not
surprisingly from the Loire. The cab franc faithful in the East are
learning from the mistakes of the past before their variety becomes a
noble experiment.
Given the success of the cabernet franc session, Penn State and the
growers' group will likely host another in-depth session focused on a
specific variety. For example, there's been an interest in gruener
veltliner. |

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