scholarly journals Effects of Vine Water Status on Yield Components, Vegetative Response and Must and Wine Composition

2019 ◽  
Author(s):  
Pilar Baeza ◽  
Pedro Junquera ◽  
Emilio Peiro ◽  
José Ramón Lissarrague ◽  
David Uriarte ◽  
...  
Keyword(s):  
Yield Components ◽  
Water Status ◽  
Wine Composition

scholarly journals Rootstock-scion interaction:5. Effect on the evolution of Cabernet Sauvignon grape ripening

2019 ◽  
Vol 41 (3) ◽  
Author(s):  
Alberto Miele ◽  
Luiz Antenor Rizzon
Keyword(s):  
Principal Component Analysis ◽  
Regression Analysis ◽  
Yield Components ◽  
Polynomial Regression ◽  
Principal Component ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Cabernet Sauvignon ◽  
Total Soluble Solids ◽  
Wine Composition

Abstract The rootstock effect on grapevine yield components, grape must and wine composition and wine sensory characteristics were evaluated in previous studies. This experiment carried out over five years had the objective to determine the effect of the rootstock on the evolution of variables related to sugar and acidity contents of the juice during grape ripening. The treatments consisted of Cabernet Sauvignon grapevine grafted on rootstocks such as Rupestris du Lot, 101- 14 Mgt, 3309 C, 420A Mgt, 5BB K, 161-49 C, SO4, Solferino, 1103 P, 99 R, 110 R, Gravesac, Fercal, Dogridge and Isabel. The berries were sampled during the grape ripening period, on nine dates during the summer of each year. Taken to the laboratory, they were hand crushed and the juice was centrifuged to separate the solid and liquid phase, where the supernatant was then used for physicochemical analyses. The data were submitted to Principal Component Analysis (PCA) and polynomial regression analysis. The main results show that, at grape maturity, the PCA discriminated mainly the juices of CS/101-14 Mgt, CS/SO4 and CS/Gravesac, which had high density, total soluble solids, total soluble solids/titratable acidity ratio and pH, and CS/Dogridge and CS/Fercal, which had high titratable acidity. The density, total soluble solids, titratable acidity, total soluble solids/titratable acidity ratio increased as grape ripened, but the titratable acidity decreased. However, the increase or decrease rates were lower at the end of the grape ripening cycle according to the variable, and the total soluble solids having the highest increase (116.3%) and the titratable acidity the highest decrease (68.3%).

Effect of different irrigation strategies on vine physiology, yield, grape composition and sensory profiles of Vitis vinifera L. Cabernet-Sauvignon in a cool climate area

OENO One ◽  
2014 ◽  
Vol 48 (4) ◽  
pp. 269
Author(s):  
Gabriel Balint ◽  
Andrew G. Reynolds
Keyword(s):  
Yield Components ◽  
Field Experiments ◽  
Root Zone ◽  
Water Status ◽  
Sensory Attributes ◽  
Cabernet Sauvignon ◽  
Humid Climate ◽  
Fruit Composition ◽  
Sensory Profiles ◽  
Cool Climate

<p style="text-align: justify;"><strong>Aim</strong>: The efficacy of partial root zone drying (PRD) and regulated deficit irrigation (RDI) on vine physiology, yield components, fruit composition and wine sensory profiles of ‘Cabernet-Sauvignon’ was investigated in a cool climate region in Ontario, Canada.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Field experiments were conducted in a Cabernet-Sauvignon block in Niagara-on-the-Lake, ON Canada between 2006 and 2008. There were five treatments : non-irrigated control, PRD, full irrigation [100 % of crop evapotranspiration (ET<sub>c</sub>)] and two levels of RDI (50 and 25 % ET<sub>c</sub>). Treatments started immediately after fruit set and continued until post-veraison. Soil and vine water status were apparently controlled not only by the amount of water but also by the irrigation strategy used. In the PRD treatments, soil moisture, leaf water potential, and transpiration rate were generally lower than in 100 % ET<sub>c</sub> but higher than non-irrigated and RDI treatments. Almost all treatments were different than in non-irrigated vines in fruit composition and wine sensory attributes. Wine sensory attributes differed considerably due to the amount of irrigation water applied in 2007. RDI strategies were more consistent than the PRD treatments in their effect on vine water status, grape composition and wine sensory profiles. Inconsistent patterns across seasons for some variables indicated that besides soil and vine water status, there were other factors that impacted vine physiology, yield components and berry composition.</p><p style="text-align: justify;"><strong>Conclusions</strong>: RDI treatments improved wine quality when compared with full or either non-irrigated treatments. Overall, use of RDI irrigation or PRD during dry and warm years can improve grape composition in cool climates.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: To the best of our knowledge, this is the first evaluation of PRD and RDI on Cabernet-Sauvignon in a cool humid climate. It suggests that although RDI strategies are more effective, PRD also has value, particularly in dry seasons.</p>

scholarly journals The influence of bird netting on yield and fruit, juice, and wine composition of Vitis vinifera L.

OENO One ◽  
2013 ◽  
Vol 47 (1) ◽  
pp. 35
Author(s):  
Vinay Pagay ◽  
Andrew G. Reynolds ◽  
K. Helen Fisher
Keyword(s):  
Yield Components ◽  
Fruit Juice ◽  
Growing Season ◽  
Soluble Solids ◽  
Positive Finding ◽  
Wine Quality ◽  
Cabernet Franc ◽  
Wine Composition ◽  
Migratory Patterns ◽  
The Impact

<p style="text-align: justify;"><strong>Aims</strong>: To investigate the impact of semi-permanent bird netting and timing of its application on Cabernet franc grapevine yield components and fruit, juice, and wine composition.</p><p style="text-align: justify;"><strong>Methods and results</strong>: Semi-permanent bird netting was installed over Cabernet franc grapevines at various times – post-bloom, bunch closure, and veraison – of the 2004 growing season in the Niagara Peninsula of Canada. At harvest, vine yield components were measured followed by berry and must compositional analysis of soluble solids, pH, titratable acidity (TA), color, and polyphenols. Wines made from these grapes were also analyzed (pH, TA, color, and polyphenols). It was found that installation of bird netting over grapevines had minimal effect on yield components and berry composition regardless of when the nets were installed. Must composition revealed significant decreases in soluble solids, pH, and color as a result of the netting, the least impact being when the nets were applied at post-bloom. Wine composition was similar to the must data with the netted treatments resulting in lower pH, higher TA, and decreased color. Total anthocyanins and polyphenols were slightly reduced as a result of the netting.</p><p style="text-align: justify;"><strong>Conclusions</strong>: Minimal impact of bird netting on yield, fruit, must and wine quality is a positive finding since netting is becoming more prevalent in vineyards worldwide due to changing migratory patterns of birds. It is recommended that netting be applied around post-bloom for the ease of application, to minimize shading effects, which could lead to decreased fruit quality, and to maintain yield.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: Use of bird netting is becoming more prevalent by grape growers worldwide due to changing migratory patterns of birds that feed on grapes. This study shows that bird netting is not detrimental to yield and fruit and wine quality especially when applied early in the growing season.</p>

Impact of Amigo Oil and KDL on Grapevine Postbudburst Freeze Damage, Yield Components, and Fruit and Wine Composition

2017 ◽  
Vol 69 (1) ◽  
pp. 77-88 ◽  
Author(s):  
Michela Centinari ◽  
Denise M. Gardner ◽  
Donald E. Smith ◽  
Maria S. Smith
Keyword(s):  
Yield Components ◽  
Wine Composition ◽  
Freeze Damage

scholarly journals Effects of timing of leaf removal on yield, berry maturity, wine composition and sensory properties of cv. Grenache grown under non irrigated conditions

OENO One ◽  
2008 ◽  
Vol 42 (4) ◽  
pp. 221 ◽  
Author(s):  
Javier Tardáguila ◽  
María Paz Diago ◽  
Fernando Martínez de Toda ◽  
Stefano Poni ◽  
Mar Vilanova
Keyword(s):  
Yield Components ◽  
Fruit Set ◽  
Titratable Acidity ◽  
Sensory Properties ◽  
Vitis Vinifera L ◽  
Leaf Removal ◽  
Alcohol Content ◽  
Total Polyphenol ◽  
Wine Composition ◽  
Defoliation Treatment

<p style="text-align: justify;"><strong>Aims</strong>: The objective of this study was to investigate the effects of timing of leaf removal on yield components, berry sensory characteristics, composition and sensory properties of Vitis vinifera L. Grenache wines under non-irrigated conditions.</p><p style="text-align: justify;"><strong>Methods and results</strong>: The effects of timing of defoliation (fruit set and veraison) on yield components, berry maturity, wine composition and sensory properties of head trained, non irrigated, Grenache vines grown in Rioja appellation were studied. Leaf removal did not significantly modify total leaf area per vine as well as yield components. Grenache berries from early defoliated vines achieved the highest skin and technological maturity. Wine parameters, such as alcohol content, pH, titratable acidity, tartaric acid and total polyphenol index were unaffected by defoliation. Conversely, early leaf removal carried out at fruit set, significantly reduced the malic acid content of the wine and enhanced its colour intensity. Aroma complexity, mouthfeel, tannin quality and persistence were found to be significantly higher in the wine corresponding to the early leaf removal treatment. This was also the most preferred wine in terms of overall value.</p><p style="text-align: justify;"><strong>Conclusion</strong>: This article shows that timing of leaf removal had a marked effect on berry maturity, wine composition and sensory properties of Grenache wines made from grapes grown under dry-farmed conditions.</p><p style="text-align: justify;"><strong>Significance and impact of study</strong>: The results suggest that the timing of defoliation induces significant changes in Grenache wine composition and its sensory attributes. Late leaf removal was much less effective than early leaf removal in affecting final wine composition and quality. Grenache wine from the early defoliation treatment was rated the most preferred as of global value.</p>

Terroir of Winter Hardiness: Bud LT50, Water Metrics, Yield, and Berry Composition in Ontario Cabernet franc

2021 ◽  
Author(s):  
MARY JASINSKI ◽  
Andrew Reynolds ◽  
FREDERICK DI PROFIO ◽  
RALPH BROWN ◽  
Audrey Pasquier ◽  
...  
Keyword(s):  
Yield Components ◽  
Water Status ◽  
Titratable Acidity ◽  
High Water ◽  
Winter Hardiness ◽  
Lag Phase ◽  
Multilinear Regression ◽  
Cabernet Franc ◽  
Positive Correlations ◽  
Berry Composition

Winter hardiness may be influenced by vineyard terroir-driven factors, and vineyard zones with low water status [leaf water potential (ψ)] could be more winter hardy than vines with high water status (higher leaf ψ). Six Cabernet franc vineyards were chosen throughout the Niagara Region in Ontario. Data were collected at fruit set, lag phase, and veraison [soil water content (SWC), leaf ψ], at harvest (yield components, berry composition), and three times during winter (LT50; the temperature at which 50% of buds die) in the 2010-12 seasons. Interpolation by kriging and mapping of variables was completed using ArcGIS, and statistical analyses (linear correlation, k-means clustering, principal components analysis, multilinear regression) were performed. Spatial trends were observed in each vineyard for SWC, leaf ψ, yield components, berry composition, and LT50. GIS and statistical analysis revealed that leaf ψ could predict LT50, with strong positive correlations between LT50 and leaf ψ values in most vineyards in 2010-11. In the dry 2012 season, leaf ψ (particularly at veraison; range -1.3 to -1.6 MPa) was positively correlated to LT50, yield, titratable acidity, pH, and Brix and negatively to SWC, color, anthocyanins, and phenols. Overall, vineyards in different appellations (Niagara Lakeshore, Lincoln Lakeshore, Four Mile Creek, Beamsville Bench) showed many similarities. These results suggest that there is a spatial component to winter injury, as with other aspects of terroir. Furthermore, this study allows for means by which to compare winter hardiness to other critical variables in order to better understand the terroir of the Niagara region.

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