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United States Department of Agriculture

Agricultural Research Service

Research Project: VINEYARD MANAGEMENT PRACTICES AND THE QUALITY OF GRAPES AND GRAPE PRODUCTS IN THE PACIFIC NORTHWEST

Location: Horticultural Crops Research

Title: Wind—Friend or Foe of Canopy Management?)

Author
item Tarara, Julie
item Hoheisel, Gwen-alyn

Submitted to: Good Fruit Grower
Publication Type: Trade journal
Publication Acceptance Date: 3/1/2009
Publication Date: 4/15/2009
Citation: Tarara, J.M., Hoheisel, G. 2009. Wind—Friend or Foe of Canopy Management? Good Fruit Grower. 60(8):34.

Interpretive Summary: .

Technical Abstract: Trellising and training in vineyards represent money and effort invested to maximize canopy photosynthesis and to optimize solar radiation exposure at the fruit. Canopies that are symmetrical around the cordon are desired, and vineyard managers often follow conventional wisdom of orienting vine rows north-south to balance total solar radiation on both sides of the canopy. Even in symmetrically-trained vines, exposure to high or sustained winds can stunt shoots and redirect growth windward, creating an unbalanced canopy architecture. Intuitively, we perceive these effects in windy locations. Previous research showed smaller fruit clusters on the windward side of vines, hypothesized to be caused by disrupted berry set. This research article summarizes an assessment of shoot geometry and wind-shaped canopy architecture, and their effects on solar radiation at the fruit.

Last Modified: 8/24/2016
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