Raleio de cachos sobre o potencial enológico da uva 'Cabernet Franc' em duas safras

Filho, José Luiz Marcon; Hipólito, Joseane de Souza; Macedo, Tiago Afonso de; Kretzschmar, Aike Anneliese; Rufato, Léo

doi:10.1590/0103-8478cr20140995

Cited by 28 publications

(11 citation statements)

References 19 publications

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“…The titratable acidity data were adjusted to the linear regression model (Figure 2(b)), with decreases of 2.1%, 6.4% and 10.7% for 10%, 30% and 50%, respectively, when compared to the without thinning. This result was also observed in the studies carried out with "Cabernet Sauvignon" and "Cabernet Franc", where regression was also linear as the cluster thinning intensities increased [30] [32].…”

Section: Resultssupporting

confidence: 69%

Impact of Cluster Thinning on Quality of “Malbec” Grapes in Encruzilhada do Sul-RS

Barros¹,

Frölech²,

Mello³

et al. 2018

AJPS

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The cultivar Malbec has been present's good performance and quality in the South Half of Rio Grande do Sul (RS). In this context, we aimed to evaluate the quality of "Malbec" grapes in relation to the phytotechnical, physicochemical parameters and bioactive compounds under different intensities of cluster thinning in Encruzilhada do Sul-RS. The experiment was carried out in a commercial vineyard in the 2015/16 with the cultivar Malbec (Vitis vinifera L.) under rootstock "1103 Paulsen", with spacing of 2.2 m between rows and 1.1 m between plants. The experimental design was of randomized complete blocks with five replications. The treatment factor tested was the cluster thinning, with four levels (0%, 10%, 30% and 50%), performed in véraison. The evaluated phytotechnical variables were cluster length, cluster fresh weight, berries fresh weight, number of berries, rachis fresh weight. Also what were determined are the number of clusters, production and Ravaz index. The physicochemical variables verified were pH, soluble solids (SS), titratable acidity (TA) and SS/TA ratio. The bioactive compounds were total polyphenols index and total anthocyanins. The appropriate balance between source and sink, by the Ravaz index, occurs to zero and 10% of cluster thinning. The "Malbec" grapes present an increase of the maturation index (SS/TA) at 50% of cluster thinning, due to the low titratable acidity at this level. The total polyphenols index has a larger increment when the plants are submitted to the cluster thinning of 10%, providing a larger quality to the fruits. At all the levels of cluster thinning tested, when compared to the control, there was a greater contribution of total anthocyanins in the berries.

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Section: Resultssupporting

confidence: 69%

Impact of Cluster Thinning on Quality of “Malbec” Grapes in Encruzilhada do Sul-RS

Barros¹,

Frölech²,

Mello³

et al. 2018

AJPS

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“…A second extraction from the remains of the skins was performed using the same methanol volume and time, at 0±0.5°C. Both extracts were separated, homogenized, and filtered through Whatman 01 filter paper (Marcon Filho et al, 2015). Total polyphenol content was determined by the spectrophotometry method described by Singleton & Rossi (1965), using the Folin-Ciocalteu reagent, with absorbance in 760 nm wavelength.…”

Section: Methodsmentioning

confidence: 99%

Agronomic performance of 'Cabernet Sauvignon' with leaf removal management in a high-altitude region of Southern Brazil

Würz

Brighenti

Filho³

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to compare the effect of different times of leaf removal on the vegetative-productive efficiency and on the chemical and physical characteristics of 'Cabernet Sauvignon' clusters in a high-altitude region of the state of Santa Catarina, Brazil. The experiment was conducted in the 2015 and 2016 vintages, in a commercial vineyard, located in the municipality of São Joaquim, in the state of Santa Catarina, at 1,230-m altitude. The treatments consisted of different times leaf removal in the cluster zone, in the following phenological stages: full bloom, buckshot berries, pea-sized berries, veraison, and 15 days after veraison, besides a control without leaf removal. The evaluated variables were subjected to the analysis of variance and compared with the Scott-Knott test, at 5% probability. In a high-altitude region, leaf removal provides more adequate indices for plant vegetative:yield balance. It also increases yield when performed during the pea-sized berry and veraison stages, increases the fertility index when performed during the pea-sized berry stage, and improves the chemical composition of 'Cabernet Sauvignon' grape when performed up to the pea-sized berry stage. The obtained results show the importance of early leaf removal to obtain must with potential for the production of quality wines.

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“…Os raleios de cachos não foram significativos para a variável SS (Tabela 3). Assim como nesse trabalho, também não foram relatadas diferenças entre as intensidades de raleio no estudo que ocorreu em São Joaquim/SC, na safra de 2011 com 'Cabernet Franc' onde os valores ficaram entre 20,67 e 21,30 °Brix (Marcon Filho et al, 2015). O teor de açúcar é muito importante na maturação, entretanto isoladamente pode ter diferentes nuances à cerca do sabor da uva, já que depende do conteúdo de ácidos orgânicos.…”

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“…Na primeira safra os índices de maturação ficaram entre 0,22 e 0,29, já na safra seguinte os valores variaram de 0,16 a 0,21. O raleio de cachos na 'Cabernet Franc' em São Joaquim/SC na safra 2009/10 resultou em valores de SS/AT entre 0,16 e 0,22, enquanto que na safra 2010/11 variou de 0,21 a 0,23 (Marcon Filho et al, 2015). O conhecimento sobre a evolução dos ácidos orgânicos, assim como dos açúcares, permite escolher a melhor época de colheita e verificar o potencial de cada cultivar para a produção de vinho (Soares & Leão, 2009).…”

Section: /9unclassified

Características físico-químicas de uva ‘Marselan’ sob raleio de cachos na Serra do Sudeste-RS

Barros

Mello

Frölech

et al. 2019

Agraria

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AGRONOMIA (AGRONOMY)RESUMO: Este experimento teve como objetivo avaliar o efeito de diferentes intensidades de raleio de cachos nas características físico-químicas da 'Marselan' na Serra do Sudeste-RS. O estudo foi realizado na safra 2015/16 em vinhedo comercial no município de Encruzilhada do Sul. A cultivar utilizada foi a Marselan (Vitis vinifera L.) sobre porta enxerto Paulsen 1103 e espaçamento de 2,2m entre fileiras e 1m entre plantas. O delineamento experimental foi de blocos completos casualizados em esquema unifatorial, com cinco repetições. O fator de tratamento testado foi o raleio, com quatro níveis (0, 10, 30 e 50%), realizado no véraison. As variáveis avaliadas foram comprimento e massa fresca de cachos, massa fresca e número de bagas e massa fresca de ráquis. Também foi determinado o número de cachos, produção por planta e o índice de Ravaz. Foram verificadas o pH, sólidos solúveis (SS), acidez titulável (AT), a razão SS/AT, índice de polifenóis e antocianinas totais. A 'Marselan' quando submetida a 0 e 10% de raleio de cachos obteve adequado índice de Ravaz, indicando que a relação carga vegetativa está proporcional a produção por planta nesses níveis. Para todas as outras variáveis, a intensidade de raleio de cacho não proporciona incremento na qualidade da uva 'Marselan' na Serra do Sudeste-RS. Palavras-chave: índice de Ravaz; remoção de cachos; véraison; Vitis vinifera Physical chemical characteristics of 'Marselan' grape under clusters thinning in Serra do Sudeste, RS, BrazilABSTRACT: This observation, this experiment aimed to evaluate the effect of different intensities of cluster thinning in the physicochemical characteristics of 'Marselan' grape in the Serra do Sudeste, RS, Brazil. The cultivar used was the Marselan (Vitis vinifera L.) on Paulsen 1103 grafted and 2.2m spacing between rows and 1m between plants. The study was carried out in the 2015/16 harvest in a commercial vineyard in the municipality of Encruzilhada do Sul. The experimental design was a randomized complete block with five replications. The treatment factor tested was the cluster thinning, with four levels (0, 10, 30 and 50%), performed in véraison. The evaluated variables were length clusters, fresh cluster mass, fresh berries mass, number of berries, fresh rachis mass. The number of clusters, production per plant and Ravaz index were also determined pH, soluble solids (SS), titratable acidity (TA), ratio SS/TA, total polyphenol content and total anthocyanins. The 'Marselan' when submitted to 0 and 10% of cluster thinning obtained an adequate Ravaz index, indicating that the relation vegetative load is proportional to the production per plant at these levels. For all other variables, the intensity of cluster thinning does not increase the 'Marselan' grape quality in the Serra do Sudeste-RS.Características físico-químicas de uva 'Marselan' sob raleio de cachos na Serra do Sudeste-RS Rev. Bras.

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Raleio de cachos sobre o potencial enológico da uva 'Cabernet Franc' em duas safras

Cited by 28 publications

References 19 publications

Impact of Cluster Thinning on Quality of “Malbec” Grapes in Encruzilhada do Sul-RS

Impact of Cluster Thinning on Quality of “Malbec” Grapes in Encruzilhada do Sul-RS

Agronomic performance of 'Cabernet Sauvignon' with leaf removal management in a high-altitude region of Southern Brazil

Características físico-químicas de uva ‘Marselan’ sob raleio de cachos na Serra do Sudeste-RS

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