1. Karen Lindquist ktlindquist@hotmail.com ILS 501-S70
Viticulture
Karen Lindquist
ILS 501-S70

2. The grapevine One of the oldest cultivated plants in the world
Viticulture
2/24/2019

3. Grapes are deciduous woody vines
The trunk is the permanent stem which is often grafted to a disease resistant rootstock
The canes extend from the trunk to bear the flowers and fruit. Only one year old canes will bear fruit
One year canes
Photo courtesy of Wine Tours of Texas
trunk
Viticulture
2/24/2019

4. Varieties Most grapes are cultivars of Vitis vinifera or Vitus labrusca and are eaten raw (table grapes) or made into raisins, jam, juice, jelly, vinegar, wine, grape seed extract and grape seed oil
Red
White
Purple
Crimson seedless
Thompson seedless
Niabell
Flame seedless
Pinot Grigio
Fantasy seedless
Red globe
Sauvignon Blanc
Concord
Pinot noir
Riesling
Autumn Royal
Zinfandel
Perlette
Ribier
Cabernet Sauvignon
Sugarone
There are more than 300 varieties of grapes, this is a sampling of some of the more common varieties.
The blue indicates table varieties and the gray are wine varieties.
Viticulture
2/24/2019

5. Cultural needs Grapes require: full sun a well drained ,
slightly acidic soil
a strong trellis or
support system
Viticulture
2/24/2019

6. Pruning Proper pruning is essential for an abundant grape harvest
Prune in late winter while dormant
Allow only 4 first year canes, securely tied to trellis
Allow 4 spurs for next year, with 2-3 buds
Number of buds on remaining canes should be proportional to the vigor of the vine
cane
spur
For further information on proper pruning techniques visit the website on the screen for Ohio State University’s “Basic Principles of Pruning Backyard Grapevines”.
The four –arm Kniffen System is the most popular approach to pruning grapevines.
Viticulture
2/24/2019

7. Pest Management
Integrated Pest Management (IPM) is a new approach in viticulture, brought on by consumer pressure and economics.
Chemical pesticides are used only as a last resort when other methods such as scouting, sampling, thresholds, forecasts and biological and cultural controls are ineffectual.
A grape grower monitors for summer diseases as part of the field IPM scouting program.
Photo courtesy of the National Grape Cooperative, Inc.
Viticulture
2/24/2019

8. Pests and Diseases to consider in an IPM grape program
birds
Anthracnose
Japanese beetles
Black rot on leaf and fruit
Grape phylloxera
Grape flea beetle larva
Downy mildew
Viticulture
2/24/2019

9. Harvesting Grapes should ripen on the vine to be enjoyed to their fullest
Bon appétit
Viticulture
2/24/2019

10. Reference List Viticulture 2/24/2019
Brown, Marcus., Gao, Gary . Ohio State University. (n.d.) Basic principles of pruning backyard grapevine. Retrieved October 20, Center for Agricultural Partnerships. (n.d.) Retrieved October 20, Gardening How to. (n.d.). Pruning grapes. Retrieved October 20, Grapes from California.(2008). Retrieved October 20, Jauron,R., Nonnecke,G., Lewis, D., Gleason,M. Iowa State University. Growing grapes in the home garden. (n.d.). Retrieved October 20, The Wine Info Site. Grape Varieties. (n.d.). Retrieved October 20, Weigle,T and Kovach, J Grape IPM in the Northeast Wine Tours of Texas &imgrefurl= Wyman, Donald. Wyman’s Gardening Encyclopedia New York
Viticulture
2/24/2019