Wine Grower News July Midwest Grape Wine Industry Institute http by therza

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									Wine-Grower-News #52                                    July 18, 2008

Midwest Grape & Wine Industry Institute:

Information in this issue includes:

Iowa Wine Industry featured in May/June 2008 Wine East Magazine
All 99 Iowa counties now have a ISU Vineyard Soil Suitability Index
Iowa Rainfall Accumulations Running -4” to +22 inches above normal!!
Advance Discount – Wine Grape Production Guide for Eastern North America
Japanese Beetle Reports Increasing
Expect to See Spray Planes Soon
Crimson Cabernet from Davis Viticulture Research (Norton x Cabernet)
Iowa Vineyards and Wineries receive outstanding recognition in the 2008
      Mid - American Wine Competition
Christmas Tree Shearing Knives for Hedging, Topping & Skirting
Comments from Readers
Quote of The Week
Neeto-Keeno WWW Stuff

Iowa Wine Industry featured in May/June 2008 Wine East Magazine

Dr. Murli Dharmadhikari and I were asked by Wine East Magazine to send them an article about the
Iowa vine/wine industry. What an opportunity to show off Iowa! Murli and I jumped right on this.
The article, Iowa Boom Includes Wine was published in the May/June edition of Wine East
Magazine. I asked Hudson Cattell, co-editor of Wine East for permission to post this article Online
for our readers. Hudson graciously gave us his permission. You can read or download the entire
article here:

All 99 Iowa counties now have a ISU Vineyard Soil Suitability Index

The ISU Vineyard Soil Suitability Index was first put Online in March of 2008. At that time, there
were several counties that had not all been included. All 99 Iowa counties now have their own
Vineyard suitability Index.

There are approximately 450 different soil series (soil types) that have been identified in Iowa via our
Iowa Cooperative Soil Survey program. The properties that differentiate these different soils have
been identified in the "Iowa Soil Properties and Interpretation Database" (ISPAID). Our ISU
Extension staff on campus were able to identify favorable vineyard soil properties and select
individual soil map units in each county that are suitable for vineyards. The soil map units in each
county that are suitable (favorable) for vineyards can be found at any of these three WWW sites:

1. Midwest Grape & Wine Industry Institute:

2. ISU Extension Viticulture Homepage:

3. ISU Soil & Land Use Homepage:

Iowa Rainfall Accumulations Running -4” to +22 inches above normal!!

Current Observed Precipitation:
Historic Normal Accumulations:
Deviation from Normal:

Advance Discount – Wine Grape Production Guide for Eastern North America

Advance Order Discounted price of the Wine Grape Production Guide for Eastern North America
is now available. Tony Wolf, Viticulturist for Virginia Tech, and 16 co-authors (including Terry
Bates, Andrew Landers, Tim Martinson, and Wayne Wilcox of Cornell) have put together a
comprehensive Wine Grape Production Guide for the Northeast, to be printed this Fall by NRAES
(Northeast Resource, Agriculture, and Engineering Service). This 300+ page guide has 16 chapters,
and is by far the largest commodity-based production guide produced by NRAES (They have
blueberry and strawberry production guides, for example). It is destined to become the new standard
grape production guide for the Northeast and has a lot of material (eg. Terry Bates' nutrition chapter)
directly applicable to Labrusca and juice grape growers as well. Advance pre-print orders are being
accepted at $44 per copy until September 5. After publication, the cost will be substantially higher.
To order online:

Japanese Beetle Reports Increasing

I started getting reports of Japanese Beetles
(JBs) (Popillia japonica) showing up on
grapes around the last week of June. They
normally begin to emerge from the soil around
mid-June and will normally start to aggregate
in large numbers and do most of their feeding
from July through September. Grapes are high
on the list of the over 300+ species of plants JBs
like to chew on. They love to eat grape leaves
by eating the top leaf layer of tissue between the
veins (skeletonizing). American varieties are
fairly resistant. French varieties and the hybrids
are more susceptible. Young vines are the most
susceptible and can be completely defoliated            Japanese Beetles feeding on grapes.
when high numbers are present. Very seldom            (picture by Linda Naeve, ISU Extension)
will JBs feed on the berries. Moderate feeding
on the top leaves in the grape canopy can be common and often will not cause any economic damage.
Serious leaf feeding from heavy populations after veraison is more likely to cause economic yield

JB bait traps can be purchased and used to monitor the emergence of JBs and relative populations. It
is recommended to put the traps on the vineyard edges and not in the vineyard. Trapping is primarily
a method of monitoring and not control. Bacillus popillae (milky spore disease) is a biological
control agent that has been used to protect grassy areas from large larval populations, but it is
ineffective against adults entering the vineyard. Adults are capable of flying great distances and will
come into the vineyard from untreated areas. Insecticide applications are usually necessary for

The following insecticides have the highest efficacy rating in The 2008 Midwest Commercial Small
Fruit and Grape Spray Guide.

Product            Rate/Ac.       Approx. $/Ac.     Restricted Use      REI        PHI________
Baythroid XL    2.4-3.2 oz.      $7 - $9                Yes             12 hrs     3 days
Danitol 2.4 EC 10.7 – 21.3 oz. $15 - $30                Yes             24 hrs    21 days
Mustang Max       4 oz            $8                    Yes             12 hrs     1 day (a)
Renounce 20WP   3 – 4 oz.       $7 - $10                Yes             12 hrs     3 days (b)
Sevin XLR         1-2 qt.      $11 - $22                No              12 hrs     7 days

(a) Mustang Max was just recently labeled grapes in 2007. Japanese Beetles is not specifically listed
 in the grape section though it does show Japanese Beetle control for other listed crops on the label.
(b) Renounce is composed of the active ingredient cyfluthrin which is very similar to the active
ingredient of Baythroid XL (B-cyfluthrin). Renounce is labeled for grapes and has Japanese Beetles
listed on its label for many crops other than grapes.

Further resources:
1. Japanese Beetles on Grape, Virginia Tech Fruit Page:
2. Japanese Beetles, Michigan State Univ.:
3. Managing Adult Japanese Beetles, Univ. of Kentucky:
4. ISU Insect Information Notes:
5. ISU Current Japanese Distribution Map by Iowa County:
6. Midwest Small Fruit & Grape Spray Guide:

Expect to See Spray Planes Soon

There will be some nervous vineyard owners
over the next few weeks as aerial applicators
apply fungicides to corn and soybean fields.
The practice of applying fungicides to either
corn or soybeans is somewhat new for Iowa.
There has been recent research and many
on-farm trials showing that using the strobilurin
class of fungicides on corn from tassel
emergence through silking can increase yields
from 6-20 bushels per acre depending on
disease pressure. There is also some pretty
good research showing that applying fungicides
to soybeans during the pod filling period can
increase yields if foliar diseases are present and environmental conditions favor further disease
spread. Our very wet season has been very favorable to both corn and soybean disease development
this year.

On another note, soybean aphids are starting to show up in north central Iowa. You will probably see
a few planes applying insecticides and/or fungicides for soybean aphids and/or diseases here in the
near future.

Most of the applications will be costing approximately $15 to $25 per acre through a plane. $6 corn
and $13 soybeans can quickly make these applications very profitable in the face of heavy disease
and/or insect pressure.

Crimson Cabernet from Davis Viticulture Research (Norton x Cabernet)

Davis Viticulture Research (DVR) is a privately owned grape breeding company near Davis,
California. Lucian Dressel is the president of this company. Lucian was the one responsible for
establishing the Nation’s first American Viticulture Area (AVA) near Augusta, Missouri in 1980.
Lucian is now the winemaker and general manager of Mary Mitchell Winery and Vineyards near
Carrollton, Illinois.

DVR has a unique business of cross breeding Norton/Cynthiaa with an assortment of French cultivars
like Cabernet Sauvignon, Zinfandel, Malbec, as well as viniferas from Spain, Italy, Portugal,
Hungary, and the Middle East. Crimson Cabernet is one of their new grapes they just released in
2008. Information from DVR’s website tells me that the cluster and berry size is midway between
Cabernet and Norton and it has a drooping vine habit making it very adaptable to a high wire training
system. Juice from these grapes grown near Carrollton, Illinois exhibited a brix level of 22.5, a pH of
3.32 and 7.75 grams of acid per liter.

Lucian Dressel informed me in a separate e-mail that Crimson Cabernet has withstood -5 ºF without
any sign of winter damage. The canes harden off early in the season with little tip dieback through the
winter. Harvest dates near Carrollton, IL and Hermann, MO has occurred between September 10 to
October 15 depending on the year. Lucian is expecting a late harvest this season. The Norton
parentage gives Crimson Cabernet a late budbreak, normally several days later than Chardonel or
Traminette. Yields can run anywhere from 3-6 tons depending on the training system.

DVR hopes to be releasing some cultivars next year that might be good for Iowa. One is crossed with
an excellent white cultivar from Hungary called the Blue Vine (leaves are actually blue) which was
grown on the north shore of Lake Balaton in Hungary. This new cross will ripen around the same
time as Seyval. You can check out Davis Viticulture Research here:

Iowa Vineyards and Wineries receive outstanding recognition in the 2008
     Mid - American Wine Competition

The 2008 Mid-American Wine Competition (MAWC) held at Des Moines Area Community College
on July 11-13 was a huge success. The scope of the competition was broadened to include the states
of Michigan, Ohio, and Tennessee. Entries also increased from approximately 560 in 2007, to 642
wine entries in the 2008 competition. As such, the number of medals increased awarding 67 gold,
143 silver, and 186 bronze medals. A complete list of results and full biographies of our professional
wine judges are found on the website at: I hope
participants feel honored that such extraordinary judges would request to return to judge the wines in

Every year, the 'Dick Peterson Trophy' (named after the Iowa native who has been pivotal in the
development of the California wine industry) is awarded to an exceptional Iowa wine. This year,
Snus Hill Winery, Madrid, received this trophy for their estate grown Edelweiss. In addition to the

individual press release we send to each winning winery, the Larsons will receive a plaque noting
their extraordinary accomplishment.

The 2008 MAWC was the first competition in the United States to implement a food-wine pairing
competition which evaluates a wine based on its synergism with a particular food dish. This has
gained national press for Iowa and the MAWC in both Wines and Vines magazine and Wine
Business Daily. THANK YOU to the wineries who participated in this inaugural year!

As part of the MAWC we host a 'local judges qualifying exam' every year to search for outstanding
wine talent in Iowa. Bob Foster, Competition Director, flies to Des Moines to administer an exam
evaluating each participants sensory skills and reproducibility. In essence, consumers are competing
for the opportunity to taste Iowa and Midwest wines! This year, a distributor was invited to judge the
MAWC, and has requested a complete list of results for the company. This demonstrates one of the
major goals of the MAWC--help Iowa and Midwest wines gain acceptance and overcome some
prohibition-aged quality stigmas.

The following Iowa wineries received gold medals in this year’s competition. The number of gold
medals is in parenthesis after the winery name.

               Ackerman Winery (2)                  Park Farm Winery (2)
               Breezy Hills Vineyard (2)            Snus Hill Winery (4)
               Cedar Ridge Vineyards (1)            Southern Hills Winery (1)
               Danish Countryside (1)               Stone Cliff Winery (1)
               Eagle's Landing Winery (1)           Summerset Winery (4)
               Fireside Winery (1)                  Tassel Ridge Winery (2)
               Madison County Winery (1)            Wallace Winery (1)

Dr. Dick Peterson (left), Iowa native and
namesake for the Best Iowa Wine trophy.
Doug Frost (right) Chief Judge and 1 of only
3 people in the world to be both a Master of
Wine and Master Sommelier.

Paul Gospodarczyk, Instructor of Enology
Des Moines Area Community College
Ankeny, Iowa or 515-964-6406

Christmas Tree Shearing Knives for Hedging, Topping & Skirting

Part of canopy management involves topping the
canes at approx. 8-12” above the top wire on our
vertical shoot positioned (VSP) trellis systems,
skirting the canes approx. 12” above the ground
on our downward positioned trellis systems and
hedging those wild canes that stick out the sides
of the canopy and will not submit to positioning.
We normally would like to leave at least 12-15

nodes on those canes with grape clusters and a total canopy horizontal depth of 1.5 to 2.5 leaves.

Seeing that nobody in the state currently has a mechanical hedging machine mounted on their
vineyard tractor, this is vineyard chore that is easier said than done. Hand pruners, battery operated
hedge trimmers, tree pruners, and gas powered weed whackers are commonly used to get this done.
Many of you have seen me demonstrating Christmas tree shearing knives to do this chore. Forgive
me for repeating myself again, but they do work very well and we are constantly getting new
subscribers to this newsletter. I like to use the serrated blades versus the straight steel blades
because the serrated blades will stay razor sharp for several years. The straight steel blades need to be
sharpened several times a day. These knives normally come with combinations of 10 -18” handles
and 12 to 24” blades. They normally cost anywhere from $40 to $65 each. I personally like a handle
around 14-18” and a blade around 14-16”. The serrated blades are “VERY” sharp. I strongly
recommend wearing long pants when using them. Leg protectors can also be purchased for around
$25 to $30 each.

PS: They work well on trees, bushes and hedges around the yard too!

Here are several companies you can purchase Christmas tree shearing knives:

1. Evans Christmas Tree Supplies, Mobile, AL:
2. Shelton Mfg & Sales, Coon Rapids, MN: 763-433-2854
3. Kelco Industries, Melbridge, Maine:
4. Northwoods Evergreen:
5. TerraTech, Eugene, Oregon:
6. Or just Google “Christmas Tree Shearing Knives “

Show n Tell

Deb and Greg Call, owners of Bluff Creek Vineyard sent me this picture they took on 6-21-08 of
their Norton & Traminette vineyard they planted this spring. The vineyard is planted on a Lindley
soil facing to the south near Albia, Iowa.

Tom Moore, Viticulture Technician at Kirkwood        Vision Robotics of San Diego, CA is working
Community College at Cedar Rapids sent me this       to develop a grape pruning machine. The
picture of Japanese Beetle damage, Downy             prototype shown above has yet to be developed.
Mildew sporangia on the bottom side of the GR-7      They are looking to hire software engineers
leaf and Black Rot lesions. Japanese Beetles         to help make this happen. Check them out here:
started to to show up around July 1st. Tom told me
that they sprayed 7 consecutive insecticide
treatments for Japanese Beetles in 2007.

Jonathan Waldner sent me this picture of the Hutterville vineyard in South Dakota. Vineyard and
grass were planted in 2007. LaCrescent (left) are recovering from winter injury, Frontenac (center)
and Blue Bell (right) are doing great. Note the excellent weed control! Used carpet strips have been
put upside down for weed control. Nap side up would trap soil and seed and end up sprouting new
weeds. Nap side down allows moisture to seep through but no weeds to sprout. This carpet will
provide weed control for years. 7-16-08

Comments from Readers

Comment regarding Reisling beer article in Wine Grower News #51:

“Just wanted to let you know that Court Ave. Brewing in Des Moines did a Steuben Wheat beer the
last two years. The brewmaster would come out and help us with harvest and in exchange I would
give him several gallons of the Steuben juice. If he does it again this year I’ll have to let you know
when he taps the kegs.”

       --- Doug Bakker, Madison County Winery

Quotes of The Week

“I curse the day when I purchased green treated landscape timbers to use as trellis posts. Here it is
just a few years later and they are all breaking off just like tooth picks.”

       --- David Klodd, AnneLise Vineyard – Indianola, IA, Dave is also the winemaker at
           Summerset Winery in Indianola.

”More than 92% of Iowa is in farms, 43% in corn and 31% in soybeans. Combined, It is the most
human-altered state in the union, and is low on the list with respect to biodiversity and water

       --- from Time to ‘remodel’ Iowa Ag, p. 2 Iowa Farmer Today (SW), 7-12-08
           Dr. Dennis Keeney, Senior Fellow with the Institute for Agriculture and trade Policy in
           Minneapolis, Emeritus professor of agronomy at Iowa State University and former director
           of the Leopold Center.

Neeto-Keeno WWW Stuff

1. Grape Integrated Pest Management homepage: Cornell Univ., NY
2. Pest Management Strategic Plan for the North Central Region Grape Industry
   (bugs – diseases – weeds, 107 pp. EXCELLENT reference):
3. Integrated Pest Mgt Database of Grape Pest Resources:
4. New Univ. of MN Grape IPM Guide:

Past issues archived as html:
Past issues archived as pdf:

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                                               Michael L. White,
                                      ISU Extension Viticulture Specialist
                               909 East 2nd St. Suite E, Indianola, IA 50125-2892
                              ph: 515-961-6237, fax: 6017 or

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