Early Leaf Removal as a Strategy to Improve Ripening and Lower Cluster Rot in Cool Climate (Vitis vinifera L.) Pinot Grigio

2019 ◽  
Vol 71 (1) ◽  
pp. 70-79 ◽  
Author(s):  
Joshua VanderWeide ◽  
Tommaso Frioni ◽  
Zhongli Ma ◽  
Manfred Stoll ◽  
Stefano Poni ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Leaf Removal ◽  
Cool Climate

scholarly journals Effects of leaf removal on aromatic precursor dynamics during maturation of Ribolla Gialla grapes (Vitis vinifera L.)

2019 ◽  
Vol 13 ◽  
pp. 03008
Author(s):  
Sabrina Voce ◽  
Giulia Pizzamiglio ◽  
Davide Mosetti ◽  
Giovanni Bigot ◽  
Andrea Lonardi ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Aroma Compounds ◽  
Vitis Vinifera L ◽  
Leaf Removal ◽  
Berry Quality ◽  
Selection Of

Leaf removal is a viticultural practice applied in order to improve fruit-zone microclimate and berry quality. The aim of this trial was to evaluate the effect of post-flowering leaf removal on maturation and biosynthesis of terpenes and and C13-norisoprenoids in Ribolla Gialla grapes. In the seasons 2015 and 2016, basic maturation parameters were nearly unaffected by leaf removal. Contrarily, in the second season, 2016, one week before harvest, the concentration of several aroma compounds was significantly improved by leaf removal. In conclusion, the trial here showed that leaf removal improves the concentration of aroma compounds in the grapes, but the selection of the date of harvest is more crucial in order to maintain them during vinification.

Early versus late leaf removal strategies for Pinot Noir (Vitis vinifera L.): effect on colour-related phenolics in young wines following alcoholic fermentation

2013 ◽  
Vol 93 (15) ◽  
pp. 3670-3681 ◽  
Author(s):  
Melita Sternad Lemut ◽  
Kajetan Trost ◽  
Paolo Sivilotti ◽  
Panagiotis Arapitsas ◽  
Urska Vrhovsek
Keyword(s):  
Vitis Vinifera ◽  
Alcoholic Fermentation ◽  
Pinot Noir ◽  
Vitis Vinifera L ◽  
Leaf Removal

Impact of Leaf Removal, Applied Before and After Flowering, on Anthocyanin, Tannin, and Methoxypyrazine Concentrations in ‘Merlot’ (Vitis vinifera L.) Grapes and Wines

2016 ◽  
Vol 64 (22) ◽  
pp. 4487-4496 ◽  
Author(s):  
Paolo Sivilotti ◽  
Jose Carlos Herrera ◽  
Klemen Lisjak ◽  
Helena Baša Česnik ◽  
Paolo Sabbatini ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Leaf Removal ◽  
Before And After

Fruit zone leaf removal influences vegetative, yield, disease, fruit composition, and wine sensory attributes of Vitis vinifera L. 'Optima' and 'Cabernet franc'

1997 ◽  
Vol 77 (1) ◽  
pp. 149-153 ◽  
Author(s):  
S. L. Staff ◽  
D. C. Percival ◽  
J. A. Sullivan ◽  
K. H. Fisher
Keyword(s):  
Vitis Vinifera ◽  
Botrytis Cinerea ◽  
Canopy Structure ◽  
Sensory Attributes ◽  
Vitis Vinifera L ◽  
Leaf Removal ◽  
Cabernet Franc ◽  
Fruit Composition ◽  
Wine Composition ◽  
Bunch Rot

The influence of fruit zone leaf removal treatments (0, 50, and 100%) on grapevine canopy structure, incidence of bunch rot (Botrytis cinerea Pers.:Fr.), yield components, fruit and wine composition and wine sensory attributes was studied on Vitis vinifera L. 'Optima' and 'Cabernet franc'. The 50 and 100% leaf removal reduced leaf layer number, percent interior leaves and percent interior clusters. Yield was reduced between 29 and 46%. Severity of bunch rot in Optima and incidence and severity for Cabernet franc were reduced by leaf removal. Leaf removal improved colour, aroma and palatability of both Optima and Cabernet franc wines. Key words: Botrytis cinerea, defoliation, canopy management

scholarly journals Influence of summer management practices and date of harvesting on organic acids concentration and sugar concentration in grapes of Vitis vinifera L., cv. Riesling

2018 ◽  
Vol 45 (No. 4) ◽  
pp. 211-218
Author(s):  
Lubomír Lampíř ◽  
Jiří Źaloudek
Keyword(s):  
Vitis Vinifera ◽  
Management Practices ◽  
Titratable Acidity ◽  
Vitis Vinifera L ◽  
The Czech Republic ◽  
Acid Ratio ◽  
Lateral Shoots ◽  
The Impact ◽  
Wine Ageing ◽  
Cool Climate

The impact of summer canopy management was investigated in Vitis vinifera L., cv. Riesling. Sugar and organic acid concentrations were measured for the six defoliation treatments. Titratable acidity (TA) was measured twice before harvest and once at the date of harvest. The same measurements were done twice during wine ageing. The young wine was measured for concentrations of malic, tartaric and volatile acids. Treatments with appropriate defoliation, where shortened lateral shoots (up to two leaves) were retained, supported the process of wine grape ripening to the greatest extend in the cool climate of the Czech Republic, while treatments with almost no defoliation yielded the worst results. The TA decreased during fruit ripening after veraison and continued to decrease during wine maturation. The tendency of decreasing with time was shown for the malic to tartaric acid ratio as well. Concentrations of volatile acids were sufficiently low in each of the treatments.

Mechanical Mid-Shoot Leaf Removal on Ortrugo (Vitis vinifera L.) at Pre- or Mid-Veraison Alters Fruit Growth and Maturation

2018 ◽  
Vol 70 (1) ◽  
pp. 88-97
Author(s):  
Matteo Gatti ◽  
Alessandra Garavani ◽  
Katinka Krajecz ◽  
Virginia Ughini ◽  
Maria Giulia Parisi ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Fruit Growth ◽  
Vitis Vinifera L ◽  
Leaf Removal

Anthocyanin and flavonol composition response to veraison leaf removal on Cabernet Sauvignon, Nero d’Avola, Raboso Piave and Sangiovese Vitis vinifera L. cultivars

2017 ◽  
Vol 218 ◽  
pp. 147-155 ◽  
Author(s):  
Chiara Pastore ◽  
Gianluca Allegro ◽  
Gabriele Valentini ◽  
Enrico Muzzi ◽  
Ilaria Filippetti
Keyword(s):  
Vitis Vinifera ◽  
Vitis Vinifera L ◽  
Cabernet Sauvignon ◽  
Leaf Removal
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