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Viticulture Notes

Vineyard and Winery Information Series:
Vol. 23 No. 2, May - June, 2008

Dr. Tony K. Wolf, Viticulture Extension Specialist, AHS Jr. Agricultural Research and Extension Center, Winchester, Virginia

Table of Contents

  1. Canopy management workshop: 14 August 2008 – Save the date
  2. Disease management reminders
  3. Other seasonal reminders: 
  4. Upcoming meetings

I. Canopy management workshop: 14 August 2008 – Save the date

The Virginia Vineyards Association’s annual summer technical meeting will be held on August 14th and will comprise a grapevine canopy management workshop to feature Dr. Richard Smart. Dr. Smart is internationally known for his viticulture research and vineyard consulting services. He is the senior author of Sunlight into Wine which has been the essential canopy management workbook for over 15 years. The August 14th meeting will be held at Veritas Vineyards (start) and Pollack Vineyards (conclusion) near Charlottesville.   More detail will be available on the VVA website ( soon.

Dr. Smart will also be available for private vineyard consulting visits in Virginia on Friday, 15 August 2008.  Growers interested in this consulting should contact Dr. Smart directly at:

Dr Richard E Smart
Viticulture Consultant
PO Box 350 NEWSTEAD, Tas 7250, Australia email:
web   phone  +61 (0)3 6334 8838 cell  +61 (0)418 656 480 fax +61 (0)3 6331 0849

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II.Disease management reminders

Powdery mildew:

Downy mildew:

Table 1. Costs, resistance group and usage notes for downy mildew fungicides (non-exhaustive list). 
Note: material costs shown are an approximate figure based on retail prices in Virginia, June 2008.


Active ingredient


Approx. $/acre

Resistance group

Use notes



8 fl oz/ac

$20.08 + adjuvant


Protectant only; 12-hr REI; 14-day PHI; addition of a spreader/penetrating adjuvant recommended


famoxadone + cymoxanil

8 oz/ac
DF formulation

$12.27 (Tanos) + $10.20 (mancozeb)


Curative and locally systemic; 12-hr REI; 30-day PHI; must be tanked mixed with contact fungicide such as EBDC, captan, or copper



3-4 fl.oz./ac

$23.90 - $31.88 + $10.20 (mancozeb)


Curative and protectant with locally systemic activity; 12-hr REI; 21-day PHI

Ridomil Gold MZ

Mefenoxam + mancozeb

1.5 – 2.0 lbs/acre

$19.49 - $25.98

4 + 3

Curative and protectant with locally systemic activity; 48-hr REI; 66-day PHI



2.5 – 5 pints/acre

$9.16 - $18.30


Curative and protectant with locally systemic activity; 4-hr REI; 0-day PHI

Captan 50 WP


2.0 – 4.0 lbs/acre

$5.52 - $11.04


protectant only; 3 to 4-day REI (depends on label); 0-day PHI

Gavel 75DF

Zoxamide + mancozeb

2.0 – 2.5 lbs/acre

$14.56 - $18.20

22 + 3

protectant only; 48-hr REI; 66-day PHI

Ziram or mancozeb

Ziram or mancozeb

3 – 4 lbs/acre

$10.20 - $13.60 + adjuvant


Protectant only; 24 – 48-hr REI; PHI = 21 days (ziram); 66 days (mancozeb)


Black rot:


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III. Other seasonal reminders: 

Table of Contents

IV. Upcoming meetings

  1. Vineyard meetings in Virginia

Vineyard meetings, arranged by Virginia Cooperative Extension Agents, were planned for the period from April through July. The meetings generally include one to several grape specialists with Virginia Tech and the agents may provide presentations as well. Most meetings include an overview of the vineyard activities by the owner/operator of the host vineyard. The following meetings are scheduled for the remainder of this season.

Vineyard Meetings are scheduled for the following dates from 11:00 am – ~ 2:00 pm.  The first hour will be a tour of the vineyard, followed by a lunch discussion.  Everyone is asked to bring a bag lunch. Presentation topics may be modified slightly depending upon unique seasonal issues.

Central Virginia

July 11           

Margo and David Pollak,Pollak Vineyards
330 Newtown Road, Greenwood, VA  (Albemarle County)
Contact Jake Busching(540) 456-8844,

For Directions, specific program topics, speakers, and other details, contact: 
Michael Lachance
Virginia Cooperative Extension-Nelson County
Voice:    (434) 263-4035      Email


Northern Piedmont meetings

June 25 

Horton Vineyard and Winery, Gordonsville (meet at the Winery)
Dennis and Sharon Horton

  • Topics – Seasonal Insect Control Update: Product Labels & Environmental Precautions – Dr. Doug Pfeiffer, Virginia Tech Entomologist

  • Seasonal Viticultural Management Strategies – Dr. Tony Wolf, Viticulturist

Directions From Culpeper: Take 29 South to Ruckersville, then left onto 33 East; the winery is 8 miles on the left.

July 23

Falcon Glen Vineyard and Marterella Winery  (note: date was changed from original listing)

  • Topics -- Crop Estimations and Pre/ Post Harvest Disease Management Strategies – Dr. Tony Wolf, Virginia Tech Viticulturist

  • Late Season Insect Scouting and Controls, Dr. Doug Pfeiffer, Virginia Tech Entomologist

  • WPS Review/Update (emhpasis on REIs and PHIs)

Directions: Take Highway 17 North from Warrenton;  go left on Route 628 (Keith Rd.) just after Ben and Mary's Steakhouse. Go to “T” stop, about (1.1 miles) and turn left onto Cannonball Gate Road, stay the course until you see Falcon Glen Road on your right. Take a  right onto Falcon Glen Road. Please drive slowly. Our entrance is the 2nd driveway on the right - enter through the brick columns and bear right at fork in driveway - the tasting room is at the top of the hill just past the pond.  WATCH OUT FOR DOGS!!!

More information can be obtained from:
Kenner Love
Rappahannock County Cooperative Extension  (540) 675-3619

American Society of Enology and Viticulture, Eastern Section annual meeting:
July 14-16, 2008
St. Catharines, Ontario

The 2008 ASEV/ES meeting will take place 14 to 16 July 2008 at the Four Points by Sheraton St. Catharines Niagara Suites, in the heart of the Niagara Region in Ontario. This all-suites hotel is just minutes from Niagara Falls, Niagara-on-the Lake, Welland, and Fort Erie. The conference will kick off with an all-day tour on Monday the 14th that will start in Niagara-on-the-Lake with visits in the morning to Lambert Vineyard, then onto Southbrook Winery including a tour of their organic and biodynamic vineyard followed by a tour of a true gravity flow system at Stratus Winery and tasting of their assemblage wines. Lunch will follow at picturesque Hernder Estate Wines in West St. Catharines. The afternoon will include a tour of family run Fielding Estate Winery along the beautiful Niagara Escarpment on the Beamsville Bench and end with a tour, tasting and barbeque at Creekside Estate Winery in Jordan, home of the 2008 Ontario Winemakers of the Year Craig McDonald and Rob Power. Research presentations will occur on the 15th and 16th, and include a symposium on aromatic white varieties. The final day will conclude in the evening with a Farewell Reception and grazing-style dinner, intended to introduce delegates to a half-day tasting conference that will take place just across the street at Brock University on Thursday July 17. The conference on 17 July, entitled "The Riesling Experience", will include technical talks from regional and international experts, tastings, and a gourmet lunch with plenty of great food. It is our hope that attendees to the ASEV/ES will also take advantage of this special opportunity to attend The Riesling Experience immediately following the ASEV/ES meeting.  You do not have to be a member of the ASEV/ES to attend the meeting, although registration costs are lower for members. Program details, including presentation titles and speakers can be found at:

Pennsylvania Canopy Management Workshop (August 12, 2008)

Date:   Tuesday, August 12
Time:   9:00 a.m. to 4 p.m.
Place: Lancaster Farm and Home Center, Lancaster, PA and a vineyard TBA. 

If you can’t attend the canopy management workshop in Virginia (see page 1), Dr. Richard Smart will be presenting a similar workshop earlier in the week in Lancaster County, Pennsylvania that might suit your travel plans better.  Please contact Mark Chien for registration details: Mark L. Chien
Wine Grape Educator, Penn State University    Tel: 717-394-6851 

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