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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Canopy Management of Table Grapes Cultivar in Tropical Conditions
Author(s)
Patrícia Coelho de Souza Leão and Maria Auxiliadora Coelho Lima
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DOI:10.17265/2161-6264/2018.04.004
Affiliation(s)
Embrapa Semiárido, BR 428, Km 152, Zona Rural, Petrolina, PE, PO Box 23, Zip Code 56.302-970, Brazil
ABSTRACT
The production of some
seedless table grapes under tropical conditions presents low bud fertility on
the main canes and low yield, which leads to the need of pruning in the lateral
shoots. The objective of this study was to evaluate the influence of the canopy
management for the formation of lateral shoots associated with density of canes
on the yield and quality of grapes “Sugraone” in the São Francisco Valley. The experiment was
carried out over two growing seasons (2011-2012) in a commercial vineyard of
Sugraone in Petrolina, Pernambuco state, Brazil. The treatments consisted of
two canopy managements (shoot topping associated to elimination of lateral
shoots and shoot topping and formation of lateral shoots) combined with two to
three densities of canes after pruning (1.8, 2.8 and 3.8 canes/m2). The formation of “lateral shoots” increased yield and number of clusters per plant
during two consecutive growing seasons, besides using 2.8 varas/m2 resulted in highest yields only in 2011 growing season. The variables mass bunch,
mass berry, soluble solids (SS), soluble sugar, titratable acidity (TA) and pulp firmness
were not affected by treatments, while the attributes related to color, as like
brightness and hue angle of the skin, and total extractable polyphenols content
were influenced by canopy management, especially in the 2012 growing season.
Shoot topping to induce formation of laterals shoots associated with density of
2.8 canes/m2 increased the yield of seedless grapes cultivar Sugraone grown in the São
Francisco Valley, not significantly affecting the quality of the grape.
KEYWORDS
Vitis vinifera L., seedless grapes, tropical viticulture.
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