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OSU Viticulture Extension Service provides a series of viticulture training modules and videos on such topics as pruning, thinning and sprayers.
There are two general types of pruning of grapevines. Cane-pruned vines are those that are pruned back to one-year-old wood that has more than 6 buds on it. Spur pruning is generally conducted on vines that are either head- or cordon-trained.
There are many components of canopy management, and the processes differ with each vineyard production system and goals of the vineyard.
Cluster thinning is a common practice in cool climate vineyards to achieve greater fruit ripening. This instructional video describes the process and why cluster thinning is conducted. However, the video does not discuss adequate timing or intensity of the cluster thinning practice. Timing and intensity of cluster thinning depends on the vineyard site (cool, warm or hot climate), training system, production goals and the cultivar being grown. This topic is discussed at length in the OSU Viticulture Extension Online Course offered in January - March each year.
Measuring vineyard canopy density through a method called Point Quadrat Analysis. There are newer versions of this quantification currently being developed, but the basic method first described by Smart and Robinson in 1992 "Sunlight into Wine" is illustrated here in a VSP (guyot) trained Pinot Noir vineyard in the Willamette Valley of Oregon.
The Grapevine Nutrition Module leads you through information on nutrient needs of the grapevine, symptoms of deficiency and/or toxicity, and provides information on vineyard nutrient management. A section of this module also provides information for diagnosing non-nutrient problems such as damage from diseases, insects, drought, sunburn, herbicides and more! Authors: Patty Skinkis, OSU and Paul Schreiner, USDA-ARS.