| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Department of Viticulture and Enology, University of California, Davis, CA 95616; 2 [formerly with] Kearney Agricultural Center, 9240 S. Riverbend Avenue, Parlier, CA 93648.
* Corresponding author [Email: nick.dokoozlian{at}ejgallo.com];
The fruiting capacity of grapevines in a given climatic region is largely determined by their total leaf area and by the percentage of the total leaf surface area that is exposed to full sunlight, provided other factors are not limiting growth and the initiation of fruit primordia. A wide range of leaf area/crop weight ratios were investigated by pruning to different levels of buds per vine, by different degrees of defoliation, and/or by cluster thinning of grape cultivars Thompson Seedless, Tokay, Chenin blanc, and Cabernet Sauvignon located at Davis or Oakville, California. For single-canopy (SC) type trellis-training systems, the leaf area/crop weight ratio required for maximum level of total soluble solids, berry weight, and berry coloration at harvest ranged from 0.8 to 1.2 m2/kg, whereas for horizontally divided-canopy (DC) type trellis-training systems (GDC, lyre, wye), this ratio was reduced to 0.5 to 0.8 m2 leaf area per kg fruit. Optimal crop yield/pruning weight, pruning weight (kg) per m canopy length, leaf area (m2) per m canopy length, and leaf area density (m2/m3) for SC systems ranged from 4.0 to 10, 0.5 to 1.0 kg/m, 2 to 5 m2/m, and 3 to 7 m2m–3, respectively. Similarly, for DC systems these ratios ranged from 5.0 to 10, 0.4 to 0.8 kg/m, 2 to 4 m2/m, and 3 to 6 m2m–3, respectively. Grapevines with ratios that fell within the ranges given above for each of these five parameters were considered well balanced and capable of producing high-quality fruit and wines.
Key words: canopy management, trellising, fruiting capacity, yield
This article has been cited by other articles:
|
|
 |
|
  M. Keller, R. P. Smithyman, and L. J. Mills Interactive Effects of Deficit Irrigation and Crop Load on Cabernet Sauvignon in an Arid Climate Am. J. Enol. Vitic., September 1, 2008; 59(3): 221 - 234. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. Bates Pruning Level Affects Growth and Yield of New York Concord on Two Training Systems Am. J. Enol. Vitic., September 1, 2008; 59(3): 276 - 286. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. Louarn, J. Lecoeur, and E. Lebon A Three-dimensional Statistical Reconstruction Model of Grapevine (Vitis vinifera) Simulating Canopy Structure Variability within and between Cultivar/Training System Pairs Ann. Bot., May 1, 2008; 101(8): 1167 - 1184. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. W. Zoecklein, T. K. Wolf, L. Pelanne, M. K. Miller, and S. S. Birkenmaier Effect of Vertical Shoot-Positioned, Smart-Dyson, and Geneva Double-Curtain Training Systems on Viognier Grape and Wine Composition Am. J. Enol. Vitic., March 1, 2008; 59(1): 11 - 21. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Guidoni, A. Ferrandino, and V. Novello Effects of Seasonal and Agronomical Practices on Skin Anthocyanin Profile of Nebbiolo Grapes Am. J. Enol. Vitic., March 1, 2008; 59(1): 22 - 29. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. P. Bordelon, P. A. Skinkis, and P. H. Howard Impact of Training System on Vine Performance and Fruit Composition of Traminette Am. J. Enol. Vitic., March 1, 2008; 59(1): 39 - 46. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. Prajitna, I. E. Dami, T. E. Steiner, D. C. Ferree, J. C. Scheerens, and S. J. Schwartz Influence of Cluster Thinning on Phenolic Composition, Resveratrol, and Antioxidant Capacity in Chambourcin Wine Am. J. Enol. Vitic., September 1, 2007; 58(3): 346 - 350. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. J. Benz, M. M. Anderson, M. A. Williams, and J. A. Wolpert Viticultural Performance of Three Malbec Clones on Two Rootstocks in Oakville, Napa Valley, California Am. J. Enol. Vitic., June 1, 2007; 58(2): 262 - 267. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Stamatiadis, D. Taskos, C. Tsadilas, C. Christofides, E. Tsadila, and J. S. Schepers Relation of Ground-Sensor Canopy Reflectance to Biomass Production and Grape Color in Two Merlot Vineyards Am. J. Enol. Vitic., December 1, 2006; 57(4): 415 - 422. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V. Nuzzo and M. A. Matthews Response of Fruit Growth and Ripening to Crop Level in Dry-Farmed Cabernet Sauvignon on Four Rootstocks Am. J. Enol. Vitic., September 1, 2006; 57(3): 314 - 324. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. P. Holzapfel, J. P. Smith, R. M. Mandel, and M. Keller Manipulating the Postharvest Period and Its Impact on Vine Productivity of Semillon Grapevines Am. J. Enol. Vitic., June 1, 2006; 57(2): 148 - 157. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. M. Weyand and H. R. Schultz Long-term Dynamics of Nitrogen and Carbohydrate Reserves in Woody Parts of Minimally and Severely Pruned Riesling Vines in a Cool Climate Am. J. Enol. Vitic., June 1, 2006; 57(2): 172 - 182. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
