#200 - May 18, 2012


ISU - Midwest Grape & Wine Industry Institute Looking for a Winemaker

The Midwest Grape and Wine Industry Institute is seeking a qualified Winemaker to assist with research on a collaborative federal grant project. Under limited supervision of the Institute Director this person will be responsible for producing experimental wines using cold hardy grape varieties.
Required Qualifications: Bachelor's degree and 2 years of related experience; OR a combination of related education and experience totaling 6 years.
For further information and to apply online visit: https://www.iastatejobs.com , and search for vacancy 120520
ISU is an EO/AA Employer

Summer Web-Blended Viticulture Classes at DMACC

Not sure what pest is infecting your grapes and how to control it? Consider taking VIN103: Introduction to Vineyard Pest Management where we look at how to diagnose the pests of grapes and investigate effective ways to protect the investment you have made in your grape crop.
This summer we are also offering VIN104: Viticulture for Wine Production. This is a valuable class for both grape growers and wine makers as it looks at which vineyard practices are cost effective, how we can mitigate negative attributes of our fruit and increase positive ones, and many more great topics that grape growers and wine makers should be considering to optimize wine grape production.
If you have any questions, contact Randall Vos at Des Moines Area Community College: rjvos@dmacc.edu

Petiole test for Boron & Nitrogen is best done at full bloom

Petiole tests are the primary tool used to determine fertility needs once the vineyard is established. Soil testing determines the amount of nutrients in the soil. Comparing soil tests and petiole tests over time will begin to show trend lines and strengthen the value of each. Petioles (stem portion of the leaf) is the tissue recommended for determining the nutritional needs of grape vines. Obtaining a representative sample is critical. Optimum nutrient sufficiency ranges are based on petioles sampled at specific times during the season. The following chart provides some petiole analysis nutrient sufficiency ranges for here in the Midwest. These listed ranges will vary somewhat between universities and regions of the U.S. (a)
Nutrient Ranges for Grapes chart
a. Taken from Vineyard Fertilizer Management, PPT, 4-7-2009 by Dr. Paul Domoto, ISU Extension
The following guidelines can be used for proper sampling and handling procedures:
1. Full bloom (now) and around veraison (mid-July – mid-August) are the two times of the season to sample grapes. The full bloom sample is a suitable assay for nitrogen and boron. The veraison sample is more reliable for all the other nutrients.
2. At least 25-50 vines should be selected for sample collection. Vines not typical of the vineyard should be avoided.
3. Vines should be of the same age, variety, and rootstock growing on similar soil/site conditions.
4. For full bloom sampling, take the petioles from leaves opposite the bottom flower cluster. For samples taken at veraison, take the petioles from the most recently developed matured leaf.
5. Collect from 75 to 100 petioles. Short petioled varieties like Marechal Foch will need 150 to 200 petioles collected. Do not pick more than one petiole from any one shoot and 1-3 petioles can be sampled per vine. Do not sample any petioles connected to heavily diseased, insect or mechanical damaged leaves.
6. Dusty or dirty petioles should be rinsed with distilled water and patted dry with a paper towel. Place the collected samples in a clean "paper" bag and send into a testing laboratory. Make sure to record all the necessary information required by the testing laboratory and location in the vineyard.
7. Make sure to contact the testing laboratory prior to sending in the petiole test. You want to do it right the first time.
Many factors can affect the nutrient composition of plant tissue. Soil moisture, soil fertility, diseases, insects, crop load, weather, and cultural practices can directly affect petiole tests. When properly used, petiole testing will provide the most reliable method to determine fertilizer needs for established bearing vineyards. Consider the petiole test as a picture in time. Comparing petiole tests from year-to-year will show more reliable trends over time.
The ISU Soil & Plant Analysis lab does not do plant analysis testing for grapes. There are plenty of commercial labs who can do this for you. The cost will probably be in the $25to $30 range.
ISU Petiole sampling instructions and a list of commercial labs one can send a petiole sample to can be found here: http://viticulture.hort.iastate.edu/info/pdf/leafsampling.pdf
Additional Resources:
1. Midwest Small Fruit Pest Mgt. Handbook, Chap. 9:
2. Soil & Petiole Testing, Why is it Important, Cornell Univ.:
3. Petiole Testing Used As A Guide to Vineyard Fertilization, Dr. Carl Rosen, Univ. of MN:
4. A list of Iowa Department of Agriculture certified commercial soil testing laboratories can be found here:

22 Selected Weed ID Resources

I get asked often to identify weeds or for some good information sources for weed identification in the vineyard. I am not aware of any specific "vineyard" weed ID resource, but I do know of several good weed ID resources. Here are some good weed ID resources you can use:
1. ISU Weed Identification Field Guide, 8-20-10 – 56 broadleaf weeds, 19 grass and grass like weeds, 250 high quality color photographs, 24 illustrations, 104 p. - $15. (Free electronic version)
2. Weeds of the Midwestern United States & Central Canada, 7-1-10 – Univ. of Georgia Press, 440 p., 1423 color photos, 363 maps, Approx. $25 on Amazon.com.
3. Weeds of the Great Plains, University of Nebraska and Nebraska Department of Agriculture, excellent narratives of 400+ plants, line drawings of 266 weeds, large color photographs, $25.
4. Weeds of the Northeast, 1997 Cornell University Press – 408 p. 746 color photos, 118 drawing, 17 tables, paperback, $29.95.
5. Weeds of the West, 2006 – 9th printing, published by the Western Society of Weed Science, 900 color photos, 650 p. 350+ weed species, $34.
6. Interactive Encyclopedia of North American Weeds, North Central Weed Society, $55.
7. 1,000 Weeds of the North Central States, Android App. XID Services $9.95:
10. Common Weed Seedlings of the North Central StatesMichigan State University
14. New Jersey Weed Gallery, Rutgers University
16. Weed Identification & Management, University of Wisconsin- Madison 5
17. Weeds of the North Central States, University of Illinois Urbana-Champaign
18. Annual Grass & Perennial Weed ID, University of Minnesota
19. Weeds of Kansas, 163 p. ppt converted to PDF – Kanas State University
21. Northeastern Weed Science Society, extensive list of weed ID resources
22. Weed Identification, Purdue University

5-31, Basic Concepts in Winemaking – Columbia, MO

What: One-day workshop for those considering winemaking as a career or starting a winery. The workshop's objectives are to introduce basic winemaking procedures, basic winery equipment and basic concepts in wine chemistry.
When: 9 a.m. to 5 p.m. Thursday, May 31, 2012
Where: 145 Stringer Wing, 1406 East Rollins St., University of Missouri, Columbia Mo., 65211
Cost: Registration is $60.

6-(3-8), Hands-on Whiskey Class – Breckenridge, CO

What: Hands-on Whiskey Class covering:
Grain Selection, Fermentation, Distillation, Barrel Aging, Proofing, Bottling
When: Sunday – Friday, June 3-8, 2012
Where: Breckenridge Distillery, 1925 Airport Road - Breckenridge, CO
Cost: $3,500.00 each (class limited to 14 students)

Two e-learning Distillation Classes – American Distillation Institute

The American Distillation Institute has two books with associated e-learning classes Online here http://www.distilling.com/courses.html
Artisan Whiskey Distilling, the E-learning Class - $250
Modern Moonshine Techniques, the E-learning Class - $250

6-(8-10), Kothe Distilling Technologies 2012 Summer Workshop

When: Friday – Sunday, June 8-10, 2012
Where: Kothe Distilling Technologies, 5121 N Ravenswood Chicago, IL 60640
Agenda: This is a program for future distillers and those with some experience. We are going to cover everything from fruit selection, mashing, and the actual distillation process to the legal aspects of starting a distillery in North America. Robert Birnecker, PhD and Sonat Birnecker Hart, PhD as well as other presenters will be giving insights into the practice of distilling and starting a distillery.
The Sensory Seminar will provide an insight into proper tasting of eaux de vie, vodkas, whiskeys, grappas and liqueurs. Participants will sample over 75 different products and learn to identify positive as well as negative aspects of distillates.
Cost: $799, maximum of 30 participants.

Motor Coach Tour of the New York Finger Lakes Grape & Wine Industry

Sponsored by: Ohio State University’s Enology & Viticulture Program
When: June 18-20, 2012
Lodging: Inn at Glenora, Seneca Lake
Cost of Tour: $375 each
Cost of Lodging $250 to $357 (depends on room size)

Mid-American Wine Competition 2012

You are invited to enter the 6th Annual Mid-American Wine Competition being held on July 13, 14, and 15, 2012. We have updated the wine competition this year based on valuable feedback from our participating wineries.
We will be sending a postcard and invitation email to wineries in the Midwest. If are a winery that would like to participate, but have not received these, please email us at winecompetition@dmacc.edumailto:winecompetition@dmacc.edu
Below is some of the highlighted information for the 2012 competition. Our website will be updated in the near future.
· June 29th Deadline for Wine Entries
· NEW – Wine Categories have been updated
· NEW – Rules of Competition have been updated
· NEW – Credit Cards can now be accepted here: http://www.midamericanwine.org
· Physical Medals will no longer be awarded for the Label Competition
· The Food-Wine Pairing competition is July 13th
- Reservations are required
- An entry to the Food-Wine Pairing Competition consists of 2 (two) bottles of wine and $25.00
- Traditional Wine Competition is July 14th and 15th
- An entry for the Traditional Competition consists of 4 (four)bottles of wine and $40.00

Iowa State Fair Commercial and Amateur Wine Competitions

Entry Deadline: Sunday, 7-1-12
Amateur entry form:
Commercial entry form (Iowa Wineries only):

Innovative Under Vine Mgt. Strategies Webcast now Archived for Viewing

The "Innovative Under Vine Management Strategies" webcast that was held on 5-10-12 from Cornell University Extension has now been archived for viewing (FREE). The following topics are covered in this 1hr.55 min. webcast:
Intra-row cover crops and other practices to favorably alter vine growth and canopy Architecture. The presentation will focus on research and grower experience using intra-row or under-trellis cover crops to (a) reduce soil erosion and to (b) suppress vegetative growth of vigorous grapevines under conditions of excess soil moisture. The discussion will also describe how canopy architecture is favorably altered by such treatments which can have a bearing on fruit composition and wine quality attributes such as color density, but also on pest management. - Dr. Tony Wolf, Virginia Tech
Vineyard Floor Management and Soil Health
Different systems for managing vineyard soils and ground-cover vegetation influence soil fertility and functionality, soil water retention and release, soil biological activity, vine nutrition, vigor and berry composition, and the natural environment around vineyards and wineries. This presentation will describe some long-term effects of mulches, legume ground-covers, mechanical tillage, and different herbicides on important soil attributes that are often called ‘soil health’. In addition, research on pesticide contamination of soils and surface water around vineyards will be reviewed, and suggestions will be made on ground-cove management systems that promote vine and soil health. - Dr. Ian Merwin, Cornell University
Sponsored by: USDA Northeast Sustainable Agriculture Research and Education Program
Hosted: by Alice Wise and Libby Tarleton, Cornell Cooperative Extension of Suffolk County

The Northern Grapes Project is now on facebook and Newsletter

Info about upcoming webinars, newsletters, field days, workshops, etc. will be posted here.
The May 18, 2012 issue of the Northern Grapes News (click to open the PDF file) is now available on the "Newsletters" page of the Northern Grapes website.

Oak Barrel and Wine Workshops

Location: Tassel Ridge Winery, 1681 220th St., Leighton, IA 50143
Dates and Times:
Workshop 1
For licensed commercial winemakers
Workshop 2
All are welcome!
Friday July 6, 2012
Saturday July 7, 2012
12:30 pm Registration/check-in
1:00-2:00 Tour of Tassel Ridge Vineyard & Winery
2:00-4:00 Demonstration and Discussion
A. Demonstration of barrel toasting
  by Francis Durand, Master Cooper from Tonnellerie Radoux
B. Discussion with Francis Durand and Dan Brick, Brick Packaging
o Types of Oak; French, American etc.
o Barrel repair
o Barrel cleaning and sanitation
o Storage and maintenance of barrels
o Barrel alternatives
4:00-5:00 Wine tasting and wrap-up
12:30 pm Registration/check-in
1:00-3:00 Demonstration and Discussion
A. Demonstration of barrel toasting
  by Francis Durand, Master Cooper from Tonnellerie Radoux
B. Discussion with Francis Durand and Dan Brick, Brick Packaging
o Types of Oak; French, American etc.
o Barrel repair
o Barrel cleaning and sanitation
o Storage and maintenance of barrels
o Barrel alternatives
3:00-4:00 Tour of Tassel Ridge Vineyard & Winery
Registration: Free but required. Contact Tammi Martin, tkmartin@iastate.edu , 515-294-3308 by Friday, June 22nd to reserve your space.

Northern Grapes Project logo


*The Northern Grapes Project is funded by the USDA’s Specialty Crops Research Initiative Program of the National Institute for Food and Agriculture, Project #2011-51181-30850



Vineyard Cultural Practices: The Biggest Bang for Your Buck

58 minute video (FREE)
UC Davis Viticulture & Enology:

Notable Quotables

"there are now bonded wineries in all 50 states. The 46 states outside of California, Washington, Oregon and New York account for about 2.5% of U.S. wine production"
"the number of wine distributors in the U.S. has fallen by 90% since 1995"
Both from: Certified Specialist of Wine Study Guide, Society of Wine Educators
"From the perspective of color, maceration is a trade-off: with longer maceration times, more tannins are extracted but this is at the expense of some loss of anthocyanins. However, the 10
anthocyanins that remain are likely to persist longer in the wine matrix, and might soften the astringency of red wine as they become progressively incorporated into polymeric pigments."
From: Maceration Part 2: Focus on Color. Spring 2012 WSU Viticulture & Extension News: http://wine.wsu.edu/research-extension/files/2010/07/VEEN-Spring2012-3.pdf

Marketing Tidbits

1. Alan Kropf and the 4 Pillars of Wine Marketing, 5-11-12 – Steve Heimoff Blog:
(Authenticity – Affordability – Rejecting Elitism – Inspiring Consumers)
2. "The growth of the Washington wine industry has taken large strides over the last 35 years. The number of wineries has increased steadily over the years going from 15 wineries to nearly 700  wineries today."
From: WSU Enology & Viticulture Extension & Research page:
3. The Wine Market Council reports that wine consumption in the U.S. has held steady over the past three years, despite economic hardship.
From: Wine Consumption Stays Steady, 5-16-12 – The Wine Enthusiast:

Neeto-Keeno WWW Stuff

1. Wine Market Council Consumer Research Summary for 2011:
2. NY: Finger Lakes Vineyard Program Vineyard Notes, 5-18-12 edition:
(18 pages of Excellent vineyard insect info with color photos)

Articles of Interest

1. IA: Iowa wineries’ ag designation means thousands in tax breaks, 5-13-12 - The Gazette:
2. Mobil Bottlers Pop Up in the Midwest, 5-14-12 – Wines & Vines Magazine:
3. The Physics of Wine Bottle Opening, 5-15-12 – Wine Industry Insight:
4. CA: Recent opinion About Abandonment and Termination of a Vineyard Lease, 5-16-12 – Libation Law Blog:
5. Following the vines to upstate New York, 5-18-12 – BBC :

Show n Tell

David Klodd fertilizing vineyardDavid Klodd, Annelise vineyard
(Above) David Klodd owner of Annelise Vineyard applies fertilizer under the wire with a AGREX LX300 540 rpm fertilizer spreader. This unit holds approximately 8.9 cubic foot of material (approx. 500 lbs. of fertilizer). The dual side banding unit is an optional attachment. Several of Dave’s grapes had just begun to bloom (a little early this season). This is a good time to apply approximately 30 to 50 lbs. / acre of nitrogen IF NEEDED!
Go to: "Think Before Using N in Your Vineyard" in Wine Grower News #83 here: http://www.extension.iastate.edu/wine/sites/www.extension.iastate.edu/files/WineGrowerNews835809.pdf
Dave’s vineyard is located 3 miles southwest of Indianola, Iowa. It consists of a little over 6,500 vines of Frontenac, Frontenac Gris, Leon Millot, Delaware, Marquette and Swenson Red.

Videos of Interest

1. ND: The Chemistry of Wine, Dr. Greg Cook, Dept. of Chemistry & Biochemistry, NDSU: 52 minute presentation at North Dakota Grape Growers 2-14-12 Annual Conference:
2. 11 presentations from WineFlavor 101D, 5-10-12 - UC Davis Viticulture & Enology:

Calendar of Events

5-28 thru 6-2, French/Italian Mediterranean chartered wine cruise, Washington State Viticulture & Enology Program. Pricing starts at $2,450 per person: http://cahnrsalumni.wsu.edu/cruise/
6-(1-2), WineMaker Magazine Annual Conference, Ithaca, NY. Details: http://www.winemakermag.com/conference
6-(3-8), Hands-on Whiskey Class – Breckenridge Distllery - Breckenridge, CO. By: The American Distillation Institute Details: http://www.distilling.com/handson12.html
6-5, Missouri Grape Growers Association Annual Field Day, Eckles Hall, Univ. of Missouri – Columbia. Details : http://iccve.missouri.edu/events/2012vit-field-day.pdf
6-(7-10), 6th Annual Conference of the American Association of Wine Economists (AAWE), Princeton, New Jersey. Hosted by Princeton University and Rutgers University. Details will be posted at www.wine-economics.org .
6-(8-10), Kothe Distilling Technologies Distillation workshop - Chicago, IL. Cost: $799 each, max of 30 participants
6-(18-22), 63rd American Society for Enology & Viticulture (ASEV) National Conference, Portland Marriott Downtown Waterfront – Portland, OR: http://asev.org/national-conference-2012/
7-(6 & 7), Oak Barrel & Wine Workshops, Tassel Ridge Winery, 1681 220th St., Leighton, IA 50143 FREE Contact prior to 6-22: Tammi Martin, tkmartin@iastate.edu , 515-294-3308
7-(15-19), 37th American Society of Enology ASEV-Eastern Section (ASEV-ES) Annual Conference - Traverse City, MI: http://www.asev-es.org/
7-19, International Symposium on Sparkling Wine Production – last day of ASEV-ES Annual Conference, Traverse City, MI: Details: http://www.asev-es.org/
7-17, Field Day: Northern-Hardy Fruit Evaluation Project at NDSU Carrington Research Extension Center, Carrington, North Dakota. http://www.ag.ndsu.edu/CarringtonREC/  701-652-2951
7-(25-27), Society of Wine Educators 30th Annual Conference – San Mateo, CA. Details here: http://www.societyofwineeducators.org/conference.php
7-29, Minnesota Grape Growers Association Annual Picnic – Round Lake Vineyard, 30124 State Hwy 264 Round Lake, MN 56167 Details: http://mngrapegrowers.com/mgga-annual-picnic1
8-16, International Cold Climate Wine Competition, University of MN Continuing Education Conference Center: http://www.mngrapegrowers.com/competition
9-8, UMN (Tentative) Annual Horticulture Research Center Vineyard & Winery open house, Excelsior, MN. Details later.
11-28 to 12-1, International Cold Climate Grape and Wine Conference - Neubrandenburg, Germany. Details soon: International Association for Northern Viticulture
1-(29-31)-13, Unified Grape & Wine Consortium at the Sacramento Convention Center, Sacramento, CA http://www.unifiedsymposium.org/
1-31 to 2-2-13, Illinois Vintners & Grape Growers Assn. Conference – Crown Plaza Hotel, Springfield, IL.
2-(7-9)-13, Midwest Grape & Wine Conference & Trade Show – St. Charles, MO Convention Center: Details: http://www.midwestgrapeandwineconference.com/
2-(21-23)-13, Minnesota Grape Growers Association (MGGA) Cold Climate Conference – Crown Plaza, St. Paul. MN. Details: http://mngrapegrowers.com/conference
2-28 to 3-2 – 2013, 16th Nebraska Winery & Grape Growers Conference, Holiday Inn – Kearney, NE
3-(6-7)-13 Eastern Winery Exposition at Lancaster County Convention Center & Lancaster Marriott at Penn Square, PA: http://easternwineryexposition.com/
3-(12-14)-13, Wineries Unlimited at Greater Richmond Convention Center, Richmond, VA: http://www.wineriesunlimited.com/
Past issues archived as html and/or pdf here:
Wine a little, you'll feel better
Total Circulation of 1,500+ recipients in AZ, CA, CO, FL, OH, IA, IN, IL, KS, KY, MI, MN, MO, MS, MT, NC, ND, NE, NH, NM, NV, NY, OK, OR, PA, SD, VA, VT, WA, WA DC, WI, Australia, Canada, Israel, Norway, Pakistan & Turkey
Michael L. White
ISU Extension Viticulture Specialist
909 East 2nd Ave. Suite E, Indianola, IA 50125-2892
ph: 515-961-6237, fax: 6017, cell: 515-681-7286
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