Vineyard Management for Improved Fruit and Wine Quality

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Problem with balanced pruning formulas:– On small vines they tend to suggest a very low number ofshoots, which would produce far below the optimum leafarea for the vine. (e.g. 5+10 for Seyval)Another approach to balancing vines– Instead of applying a formula to determine number of buds,why not leave enough shoots to fill the trellis space then usea formula to adjust the number of clusters to meet a targeted“crop load” value?– That will help maximize “vine capacity” (leaf area) withoutcausing vine imbalance.Purdue University is an Equal Opportunity/Equal Access institution.
Using Target Crop Load Approach1. Prune and thin to 40-50 shoots per vine (at 8 ft vine spacing)2. Use long-term average cluster weight data to calculate numberof clusters needed for yield that will give a desired “crop loadratio” based on “vine size” data.3. Thin clusters to appropriate numberRequired data:• Vine size (pruning weight)• Vine yield (crop weight)• Cluster weight (number of clusters per vine)Purdue University is an Equal Opportunity/Equal Access institution.
Page 1: Vineyard Managementfor Improved Fru
Page 4 and 5: Matching Variety to Site• Cold ha
Page 6 and 7: Match Cold Hardiness to Climate•
Page 8 and 9: Match Ripening Date to Climate• H
Page 10 and 11: Purdue University is an Equal Oppor
Page 12 and 13: Match Variety to Ripening SeasonTem
Page 16 and 17: Iowa Ripening Season TemperaturesLo
Page 18 and 19: Rainfall During RipeningRainfall be
Page 20 and 21: Appropriate Harvest Decisions• Su
Page 22 and 23: Characteristics of Balanced Vines
Page 24 and 25: How much to prune? ~90%of 1-year-ol
Page 26 and 27: Balanced Pruning• Vine capacity o
Page 28 and 29: Example of Balanced Pruning• Prun
Page 30 and 31: One shoot per budPurdue University
Page 32 and 33: Non-count shootsPurdue University i
Page 36 and 37: Variety Performance over 12 yearsSo
Page 38 and 39: Variety Performance over 12 yearsSo
Page 40 and 41: Variety performance over 6 yrs at L
Page 42 and 43: Vine Balance Summary• Pruning and
Page 44 and 45: Training System Goals• Position a
Page 46 and 47: Matching the Training System to Gro
Page 48 and 49: High CordonTrainingPurdue Universit
Page 58 and 59: Concerns with Mid-Wire Cordon• Up
Page 66 and 67: Training Summary• Choose training
Page 68 and 69: Yield Components, Vine Size, Crop L
Page 70 and 71: Fruit Composition5 year meansTraini
Page 72 and 73: Sensory ResultsPanelists correctly
Page 74 and 75: Scott Henry Canopy ComparisonsTrain
Page 76: Acknowledgements• Patty Skinkis -

Vineyard Management for Improved Fruit and Wine Quality

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