Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/4131
Título: Previsão da produção na casta Sauvignon Blanc com base nas componentes do rendimento
Autor: Martins, João Duarte Victor Franco
Orientador: Lopes, Carlos Manuel Antunes
Palavras-chave: vitis vinifera
yield prediction
number of bunches
Data de Defesa: 2011
Editora: ISA/UTL
Citação: Martins, João Duarte Victor Franco - Previsão da produção na casta Sauvignon Blanc com base nas componentes do rendimento. Lisboa: ISA, 2011
Resumo: With the objective of finding estimated yield models, it was collected data from yield components of a Sauvignon Blanc vineyard variety from Quinta do Pinto, Merceana, Denomination of Origin Alenquer, Lisboa wine region. The method was based on the sampling of 32 spaces that correspond to 192 vines in four different phenological stages (separated flowers, berry pea-size, veraison and ripe bunch). The data obtained was then submitted to an statistical analysis in order to find the correlation coefficients between the several variables and yield. The results indicate significant allometric relations between the inflorescences and bunches variables measured. The number of bunches explains most of the production variability (58%). Based on a stepwise regression, two models were obtained for yield estimation: One based on three variables measured during the berry pea-size stage which explains 57% of the yield variability and other based on two variables measured during the veraison that explain 76%. The model produced at veraison seems to be the more robust and includes fast and easy to determine on the field variables. These models, when adjusted, tend to be an useful tool, allowing early previsions in an easy and economical way.
Descrição: Mestrado em Viticultura e Enologia - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/4131
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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JM2011-dissertacao_Qta do Pinto_Final.pdf3,95 MBAdobe PDFVer/Abrir

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