Intensidades de desfolha para qualidade de cachos da videira "Superior Seedless" no 'Submédio' São Francisco

Souza, Essione Ribeiro; Ribeiro, Valtemir Gonçalves; Pionório, José Anchieta de Assunção

doi:10.5777/paet.v5.n1.05

Cited by 4 publications

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“…The different defoliation levels did not influence the response of the variables production per plant, diameter, length, volume, soluble solids and titratable acidity in vine berries of the cv. Italia (Table 1), agreeing with the results obtained by SOUZA, et al, (2012), who worked with defoliation intensities for quality of the 'Superior Seedless' vine clusters, they observed that the amount of leaves kept on the branches did not influence in these variables. FELIPPETO (2008), studying the natural defoliation of the cv.…”

Section: Resultssupporting

confidence: 89%

Defoliation levels on gas exchange and composition of grape clusters cv. Italia

Souza

Ribeiro

Dantas

et al. 2014

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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The objective of this study was to evaluate the influence of defoliation on gas exchange of vine leaves at different phenological stages, and also in the development of clusters and berries of cv. Italia in the Valley of Submédio San Francisco. It was performed four levels of defoliation (5, 10, 15 and 20 leaves kept in production branch) and nine repetitions. The assessments of gas exchange (CO 2 assimilation rate (A, μmol CO 2 m -2 s -1 ), transpiration rate (E, mmol water steam m -2 s -1 ), stomatal conductance (gs, mol m -2 s -1 ), water use efficiency (USA μmolCO 2 ; mmol H 2 O) -1 , carboxylation activity of the ribulose enzyme 1,5-diphosphate carboxylase (Rubisco) and leaf temperature were determined in four phenological phases (60, 72, 84 and 106 days after pruning). It was also evaluated: yield per plant (kg plant -1 ), diameter (mm), length (mm) and volume (mL) average of berries; soluble solids content (°Brix) and titratable acidity. Results revealed no significant differences between the levels of defoliation in the traits studied during the development stages of the berries, indicating that removal of leaves did not affect the gas exchange process of the leaves opposed to the cluster. Efeito da desfolha sobre as trocas gasosas e a composição dos cachos da cultivar ItáliaResumo O objetivo do trabalho foi avaliar a influência da desfolha nas trocas gasosas de folhas de videira em diferentes fases fenológicas e, também, no desenvolvimento dos cachos e bagas da cv. Itália no Vale do Submédio São Francisco. Foram realizados quatro níveis de desfolha (5, 10, 15 e 20 folhas mantidas no ramo de produção) e nove repetições. As avaliações de trocas gasosas, taxa de assimilação de CO 2 (A, μmol CO 2 m -2 s -1 ), taxa de transpiração (E, mmol vapor d'água m -2 s -1 ), condutância estomática (gs, mol m -2 s -1 ), eficiência do uso da água (EUA, μmolCO 2 (mmol H 2 O) -1 ), atividade de carboxilação da enzima ribulose 1, 5-difosfato carboxilase (Rubisco) e temperatura da folha, foram determinadas em 4 fases fenológicas (60, 72, 84 e 106 dias após a poda). Também foram avaliados: produção por planta (kg planta -1 ), diâmetro (mm), comprimento (mm) e volume (mL) médio de bagas; teor de sólidos solúveis (ºBrix) e acidez titulável. Os resultados obtidos não revelaram diferenças significativas entre os tratamentos de níveis de desfolha, em relação às características estudadas, durante as fases de desenvolvimento das bagas, indicando que a remoção das folhas não afetou os processos de trocas gasosas das folhas opostas ao cacho.Palavras-chave: Vitis vinifera L.; taxa de assimilação; crescimento baga. Efecto de la defoliación en el intercambio de gases y composición de los racimos de la vid Italia ResumenEl objetivo de este estudio fue evaluar el efecto de la defoliación sobre el intercambio gaseoso de las hojas de vid en las diferentes etapas fenológicas y también en el desarrollo de racimos y bayas del cv. Italia, en el valle del Submédio -ISSN 1983-6325 (On line) e-ISSN 1984-7548 Souza et al. (2014 San Francisco (Bra...

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Section: Resultssupporting

confidence: 89%

Defoliation levels on gas exchange and composition of grape clusters cv. Italia

Souza

Ribeiro

Dantas

et al. 2014

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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“…Another practice that can be used to minimize the incidence of downy mildew is defoliation, with the aim of favoring aeration in the region of the inflorescences and bunches, thereby providing better conditions for maturation (Miele et al, 2009). Souza et al (2012) found that the presence of 5, 10 and 15 leaves in the production branch provided a longer berry volume and did not interfere in the production of the Superior Seedless cultivar.…”

Section: Introductionmentioning

confidence: 99%

Fruit quality and occurrence of mildew in Niagara Rosada grown under plastic cover and defoliation rates

et al. 2020

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Fruit quality and occurrence of mildew in Niagara Rosada grown under plastic cover and defoliation ratesThe purpose of this study was to evaluate the agronomic behavior of the Niagara Rosada variety cultivated under plastic cover, using defoliation intensities, and its influence on the Plasmopara viticola. The experiment was conducted in Francisco Beltrão, PR, Brazil, in a vineyard of Niagara Rosada variety in a trellised system during the 2016/2017 and 2017/2018 crop seasons. The experimental design consisted of randomized blocks, in a 5 x 2 factorial scheme being five percentages of defoliation (0%, 10%, 20%, 30% and 40%,) and use of coverage (with and without coverage), with three blocks of three useful plants per experimental plot. The temperature, air humidity and incidence of mildew on the bunches and leaves were recorded. At the end of each crop station, three bunches per plant of each plot were evaluated for the fresh biomass of the bunches, length and width of the bunches, soluble solids content, pH, number of bunches per plant, production, and productivity. It was concluded that the plastic cover associated with the environmental conditions, and phytosanitary management can favor the physical-chemical quality and reduce the severity of the mildew in the Niagara Rosada variety providing greater production and productivity. The use of defoliation does not favor the cultivation of this variety in southwestern Paraná.

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Bud load management on table grape yield and quality – cv. Sugrathirteen (Midnight Beauty®)

Feitosa

Mésquita

Pavesi³

et al. 2018

Bragantia

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respectively, distributed in 4 plots, considering five plants per replicate. Our results show that pruning seasons significantly affected sprouting percentage. However, the difference in bud load influenced this variable, with higher values in the pruning at 14 buds in both seasons. According to the results, the selection of pruning system according to bud load and to genetic features of the cultivar, and their interaction with the environment, produced higher yields in pruning with 10 buds, without negatively affecting grape quality.

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Intensidades de desfolha para qualidade de cachos da videira "Superior Seedless" no 'Submédio' São Francisco

Cited by 4 publications

References 0 publications

Defoliation levels on gas exchange and composition of grape clusters cv. Italia

Defoliation levels on gas exchange and composition of grape clusters cv. Italia

Fruit quality and occurrence of mildew in Niagara Rosada grown under plastic cover and defoliation rates

Bud load management on table grape yield and quality – cv. Sugrathirteen (Midnight Beauty®)

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