Row orientation effects on Syrah grapevine performance during winter growing season

The sunlight and heating effects on leaves and grapes are directly influenced by row orientation in vineyards. Row orientation studies have not been addressed under double pruning management, a technique used to transfer the wine grape harvest from wet summer to dry winter season in Brazilian Southe...

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Bibliographic Details
Published in:Revista Ceres 2019-06, Vol.66 (3), p.184-190
Main Authors: Souza, Claudia Rita de, Mota, Renata Vieira da, Silva, Camila Pinheiro Carvalho, Raimundo, Ricardo Henrique Paulino, Fernandes, Fernanda de Paula, Peregrino, Isabela
Format: Article
Language:English
Subjects:
AGRICULTURE, MULTIDISCIPLINARY
Anthocyanins
Berries
Clusters
double pruning
Fruits
Grapes
Grapevines
Growing season
Harvest
High temperature effects
Leaves
Microclimate
Orientation
Phenolic compounds
Phenols
Photosynthesis
Physiology
Quality
Seasons
Starch
Summer
Sun
Tartaric acid
Temperature effects
Vigor
Vines
vineyard design
Vineyards
Vitaceae
Vitis vinifera
Water potential
Weight
wine grape quality
Wineries & vineyards
Wines
Winter
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Summary:The sunlight and heating effects on leaves and grapes are directly influenced by row orientation in vineyards. Row orientation studies have not been addressed under double pruning management, a technique used to transfer the wine grape harvest from wet summer to dry winter season in Brazilian Southeast. Effects of grapevine row orientation (north/south - NS and east/west - EW) of vertically trellised and shoot positioned Vitis vinifera L. Syrah grafted onto 1103 Paulsen were investigated in the South of Minas Gerais State. The vegetative vigor was increased in NS oriented vines, probably due to high photosynthesis as suggested by the highest leaf starch accumulation. The leaf and stem water potential were slight affected by row orientation. NS orientation increased the cluster weight, but cluster number and yield per vine were not affected by treatments. Berries from NS oriented vines also showed the highest values of anthocyanins and total phenols. Under NS orientation there was a reduction on tartaric acid and soluble sugar in berries probably diluted by increased cluster weight. This study showed that vineyard under NS orientation improved grapevine vigor and promoted better phenolic maturity in wine grapes harvested during the winter season than EW orientation.
ISSN:0034-737X
2177-3491
2177-3491
DOI:10.1590/0034-737x201966030004