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Upon successful completion of this course, students will be able to:
1. Define and give examples of grapevine canopy management techniques.
2. Compare and contrast various grapevine trellis support systems.
3. Describe the yearly vineyard cycle in the context of both vegetative
and reproductive growth.
4. Compare and contrast pruning methods for producing a balanced vine.
5. Summarize the importance of sunlight and microclimate on vine
productivity.
6. Evaluate the relationship between effective canopy management and
winegrape quality.
7. Assess canopy management practices for their effects on winegrape
quality.
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I. Introduction to Canopy Management
A. Definitions and vocabulary
B. Review of grapevine phenology
C. Goals of canopy management
D. Relationship of canopy management to modern pruning concepts
E. The ideal canopy
II. Overview of Pruning, Training, and Trellis Systems
A. Pruning systems
1. Spur
2. Cane
3. Modified
B. Trellis systems
1. Vertical and vertical split canopies
2. Horizontal split canopies
3. Shoot positioning versus non-shoot positioning
4. Retro-fitting
III. Basic Grapevine Physiology and Growth Cycle
A. European: 6 phases of the growth cycle
B. German/Australian: 47 phases of the growth cycle
IV. Vine Balance
A. Site vigor potential and its components
B. Pruning weights method
C. Canopy volume method
D. Formula for pruning young vines
E. Dense vs. open canopies
V. Importance of Sunlight
A. Quantity, quality, and distribution
B. Leaf exposure
C. Fruit exposure
D. Bud exposure
E. Influence of microclimate on vine productivity
1. Exposed canopies, sunburn and other potential problems
2. Temperature and berry damages
3. Strategies to protect grapes from sunburn
VI. Canopy Configuration
A. Single curtain
B. Double curtain
C. Influence of training/trellis system on vine growth
VII. Managing Vine Vigor
A. Tools
1. Irrigation
2. Fertilization
3. Rootstocks
4. Trellis systems
5. Modified pruning methods
B. Managing high vigor vs. low vigor vines
VIII. Canopy Assessment
A. Vineyard score card
B. Shoots / meter
C. Sensory evaluation of wine and canopy management trials
IX. Troubleshooting Canopy Management Problems
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Representative assignments:
1. Reports on lecture demonstrations.
2. Balance a vine through pruning calculations (problem solving) and
pruning techniques (skill demonstration through illustrations).
3. Complete an Internet search to identify and locate trellis and hardware
companies. Print and compile findings.
4. Reading: 10-15 pages per week.
5. Final exam.
| Writing: Assessment tools that demonstrate writing skill and/or require students to select, organize and explain ideas in writing. | Writing
10 - 30% |
| Lecture reports. | |
| Problem solving: Assessment tools, other than exams, that demonstrate competence in computational or non-computational problem solving skills. | Problem Solving
20 - 30% |
| Pruning calculations; Internet search. | |
| Skill Demonstrations: All skill-based and physical demonstrations used for assessment purposes including skill performance exams. | Skill Demonstrations
20 - 30% |
| Pruning. | |
| Exams: All forms of formal testing, other than skill performance exams. | Exams
20 - 40% |
| Final Exam: Multiple choice, True/false, Matching items, Completion, Short answer. | |
| Other: Includes any assessment tools that do not logically fit into the above categories. | Other Category
0 - 10% |
| Participation. | |
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The Grapevine from the Science to the Practice of Growing Grapes for Wine, P. Iland, Patrick Iland Wine Promotions Pty., 2011
Instructor prepared materials.