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Collector's Edition WINES&VINES 141 WINE EAST GRAPEGROWING ous study conducted in New York. 9 Implemen- tation of shoot- and cluster-thinning may have improved canopy microclimate and vine bal- ance in this study. Viticulturally, all treatment combinations tested produced commercially acceptable re- sults under the conditions of this study, al- though some treatments appear to provide significant advantages for Corot Noir produc- ers in the Midwest. The higher yield of high- cordon vines observed in this short-term study, combined with the lower trellis cost and labor demands of this training system, suggests it may be economically preferable, rather than using low-cordon training. Furthermore, the higher yields produced by retaining 15 or 20 nodes per pound dormant pruning weight rather than 10 nodes, without a meaningful penalty in fruit composition or vine balance, suggest either of the two former pruning severities may be appropriate and preferred by producers. The results from this study indicate that performance of Corot Noir grapevines in Mis- souri would be optimal when vines are trained to a high-cordon system and pruned to retain 15 or 20 nodes per pound of dormant pruning weight. Future trials should incorporate pro- duction and analysis of research wines to fully evaluate treatment effects. This research was conducted by the Grape and Wine Institute, University of Missouri. Funding from the Mis- souri Wine and Grape Board and St. James Winery is gratefully acknowledged. We thank Jacki Harris for providing technical assistance on this project. R. Keith Striegler is grower outreach specialist for E. & J. Gallo Winery in Acampo, Calif.; Eli Bergmeier is vine- yard manager at Crown Valley Winery in Ste. Genevieve, Mo.; and Mark Pederson, a sales representative for Dow AgroSciences in Spokane, Wash., earned his bachelor's degree at the University of Missouri-Columbia. PHELPS COUNTY, MISSOURI, 2007-2009. To see references and acknowledgements for this article, go to winesandvines.com and search under Magazine › Features › December 2018. TABLE 1: INFLUENCE OF TRAINING SYSTEM AND PRUNING SEVERITY ON FRUIT COMPOSITION OF COROT NOIR GRAPEVINES. Treatment Soluble solids (%) pH Titratable acidity (g/L) Anthocyanins x (mg/g) berry wt Phenols x (AU/g) berry wt Tannins x (mg/g) berry wt TRAINING SYSTEM HBC 17.2 3.58 7.8 1.4 b y 1.38 2.08 VSP 17.7 3.61 7.7 1.6 a 1.5 1.98 n.s. z n.s. n.s. n.s. n.s. PRUNING SEVERITY 10 nodes 17.6 3.59 7.8 1.6 1.48 2.11 15 nodes 17.5 3.61 7.5 1.5 1.46 1.91 20 nodes 17.3 3.60 7.8 1.5 1.39 2.06 n.s. n.s. n.s. n.s. n.s. n.s. X Means of 2008 and 2009 seasons. Y Means followed by the same letter do not differ significantly at the 0.05 level. Mean separation by Tukey's Studentized Range (HSD) Test. Z n.s. = not significant at the 0.05 level. TABLE 2: INFLUENCE OF TRAINING SYSTEM AND PRUNING SEVERITY ON YIELD, YIELD COMPONENTS AND PRUNING WEIGHT OF COROT NOIR GRAPEVINES. Treatment Yield (tons/A) Clusters per vine Cluster weight (lbs) Berry weight (g) Berries per cluster Pruning weight (lbs/vine) TRAINING SYSTEM HBC 5.8 a y 39 a 0.4 2.6 a 70 1.1 b VSP 4.6 b 32 b 0.4 2.4 b 69 1.6 a n.s. z n.s. PRUNING SEVERITY 10 nodes 4.8 b 33 b 0.4 2.6 68 1.4 15 nodes 5.4 a 36 a 0.4 2.5 72 1.3 20 nodes 5.4 a 37 a 0.4 2.5 69 1.3 n.s. n.s. n.s. n.s. Y Means followed by the same letter do not differ significantly at the 0.05 level. Mean separation by Tukey's Studentized Range (HSD) Test. Z n.s. = not significant at the 0.05 level. Built by Wines Vines Analytics, with decades of experience in data collection and online search services for wineries, growers and brewers, the Distillery Database is the first of its kind. Search, sort and pull reports never before available for spirits distilleries. DISTILLERY DATABASE ORDER TODAY! winesandvines.com/distillery