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| Santos,Antonio O.; Kaye,Oren. |
| A produção de vinho de qualidade requer o cultivo de uvas de padrão superior, com características químicas e físicas favoráveis, resultantes das condições micrometeorológicas locais, da variedade e do manejo do solo e da cultura. A composição quantitativa e qualitativa do rendimento da videira pode ser responsiva à variação na lâmina de irrigação e ao sistema de poda utilizado. Doravante, a interação entre os dois fatores citados e o meio físico circundante foi mostrada ser influente na qualidade do vinho. Um experimento foi conduzido com uva vinífera nas estações de crescimento de 2003 a 2005; cujo objetivo foi determinar a melhor combinação entre sistemas de poda (manual e mecânica) e manejo da água, para a produção de vinho de 'Syrah' (Vitis vinifera... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinífera L.; Microclima; Irrigação. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662009000300008 |
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| Santos,Antonio Odair; Kaye,Oren. |
| Leaf water potential is a measure commonly used to describe crop water status and water stress dynamics. The established method for determining leaf water potential using a pressure chamber is cumbersome and subject to operator error as well as time/temperature limitations. These limitations prohibit the intensive sampling required to support proactive water management of commercial crops, including vineyards. Particular for grapevines there is need for faster, more precise and more reliable tools for determining leaf water potential in the field. Portable Near-infrared spectroscopy and multivariate data analysis were applied for the modeling and prediction of leaf water potential in grapevines. For field-grown wine grapes the most significant and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: PLS; Irrigation; Spectrometry; Chemometrics. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000300001 |
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| Santos,Antonio Odair; Wample,Robert L.; Sachidhanantham,Sivakumar; Kaye,Oren. |
| An experiment was carried out from 2005 to 2008, to calibrated NIR-based instrumentation and explore within field grape quality variability and map potential grape quality descriptors along vineyards, as a subsidy for differential harvesting,. The quality indicators (anthocyanin content, pH, titratable acidity and soluble solids) were subject to geo-spatial modeling. Subsequently, the data set was utilized to delineate "within-field" grape quality zone and to determine the timing of the harvest. Differential machine harvesting was implemented and segregation of wine grapes was done "on-the-go". The approach for field prediction of grape quality parameters and zone delineation allowed for separated fermentation for at least two wine styles. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: NIR spectroscopy; Grape; Wine. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200003 |
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