In order to achieve these learning outcomes, during the course students will:
1. Identify and describe how specific vineyard practices can improve fruit quality.
2. Develop and write a detailed vineyard farming plan to implement fruit quality improvement practices.
3. Develop and write an assessment plan to quantify and evaluate the level of fruit quality improvement.
4. Explain how fruit quality assessment plans can be effective.
5. Explain the different roles of grower, winemaker and grape buyer in grape contract negotiation.
I. Overview of Wine Grape Quality Assurance Practices
A. Canopy management
B. Deficit irrigation
C. Vine nutrition
D. Use of technology, e.g., Normalized Differential Vegetative Index (NDVI), remote imagery, canopy sensors, leaf pressure chambers
II. Identification Vineyard Problems that Limit Fruit Quality
A. Non-uniform ripening
B. Poor irrigation/fertilization
C. Vine vigor imbalance
III. Writing a Vineyard Management Plan
A. Specific vineyard problems requiring attention
B. Farming practices that address the specific problems
C. Appropriate timing of the farming practices
IV. Evaluation and Assessment of Wine Grape Quality
A. Targeting specific wine styles
B. Fruit parameters that result in a specific wine style
C. Post-harvest wine evaluation
D. Determination of which specific vineyard practices contributed to specific wine flavor/color/aroma characteristics
V. Writing a Wine Grape Quality Assessment and Evaluation Plan
A. Correlate vineyard practices to fruit parameters at harvest
B. Correlate vineyard practices to wine quality
C. Evaluation of the level of fruit quality improvement
VI. Communication with Winemakers and Grape Buyers
A. Roles of grower, winemaker, and grape buyer
B. Identification of shared goals
C. Solicitation and utilization of feedback
VII. Grape contract negotiations
A. Different types of contracts
B. Fruit parameters
E. Price (per ton vs. per acre)
VIII. Determination of optimum time/conditions for harvest
A. Winery tank space and capacity
B. Picking bin size options
D. Night harvest vs. day harvest
Instructor prepared materials
The Code of Sustainable Winegrowing Practices Workbook. 4th ed. Wine Institute of California and the California Association of Wine Grape Growers. 2020.