Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine

Detalhes bibliográficos
Autor(a) principal: Hare, Thomas
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/25401
Resumo: Vinifera Euromaster - European Master of Science in Viticulture and Enology / Instituto Superior de Agronomia. Universidade de Lisboa / Montpellier SupAgro. Departement biologie - ecologie
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spelling Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wineirrigationvine water statusgrape berry compositionwine freshnessVinifera Euromaster - European Master of Science in Viticulture and Enology / Instituto Superior de Agronomia. Universidade de Lisboa / Montpellier SupAgro. Departement biologie - ecologieClimate change is an undeniable reality which is expected to have impacts on the yields and quality of wine grapes. In Mediterranean winegrowing regions, increased temperatures and reduced rainfall are amongst the highest concerns with regard to the impact this will have on the vines. While irrigation is widespread in “New World” regions, it is not as widespread in traditional “Old World” regions. At Domaine Royal de Jarras, a three-year experiment was launched with two main objectives: 1) to develop a decision-making tool to precisely manage irrigation in a context of water use, and 2) to analyse the effect of irrigation on fruit development, composition and wine aromatic profile with a view to increasing wine freshness and regularising yields. Here, the second year of this experiment is discussed. Three levels of irrigation were applied (3mm per dose = “ROUGE”, 2mm per dose = “BLEU”, no irrigation = VERT) on two vineyards (one of 4-year-old vines (ACF3) and one of 11-year-old vines (ACF4)). Watermark® soil probes were put in place in each of the six plots in order to correlate soil potential to weather station readings and stem water potential (Ψstem) readings taken through the season. Berry samples were taken from the three ACF4 plots to assess the effect of irrigation on berry growth and composition, taking measures relating to berry dimensions, sugar, acidity, nitrogen, potassium and anthocyanins. Finally, the grapes from the ACF4 plots were harvested and vinified separately before sensory analysis by a trained panel to measure the effect of irrigation on wine profile. In a particularly hot and dry season, soil potential did not significantly correlate with evapotranspiration (ETP) and Ψstem (multiple linear regression: F (2, 92) = 2.544, p = 0.0841). Unexpectedly, yields were highest in the VERT treatment and lowest in the ROUGE treatment, correlating inversely to the amounts of irrigated water. Berry composition showed some significant differences between treatments, with the ROUGE treatment having lower levels of sugar, slightly higher acidity and higher nitrogen levels in the must. The 2019 sensory analysis was not carried out due to time constraints, however the 2018 sensory analysis suggested that higher irrigation was giving rise to a fresher wine profile. It is concluded that a decision-making tool for irrigation is difficult to develop in sandy soils using soil probes due to the high drainage of the soil and high variability in soil humidity around drippers. Irrigation was not successful in regularising yields, although this may be due to how late in the season irrigation was launched or by differing water table levels between plots. The results suggest that berry composition was improved through irrigation, which will be confirmed once the 2019 sensory analysis has been carried outs.nDeloire, AlainLopes, CarlosRepositório da Universidade de LisboaHare, Thomas20192025-12-01T00:00:00Z2019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/25401TID:203083644engHare, T. - Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine. Lisboa: ISA, 2019, 99 p.info:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-17T01:31:31Zoai:www.repository.utl.pt:10400.5/25401Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:09:17.059387Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
title Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
spellingShingle Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
Hare, Thomas
irrigation
vine water status
grape berry composition
wine freshness
title_short Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
title_full Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
title_fullStr Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
title_full_unstemmed Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
title_sort Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine
author Hare, Thomas
author_facet Hare, Thomas
author_role author
dc.contributor.none.fl_str_mv Deloire, Alain
Lopes, Carlos
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Hare, Thomas
dc.subject.por.fl_str_mv irrigation
vine water status
grape berry composition
wine freshness
topic irrigation
vine water status
grape berry composition
wine freshness
description Vinifera Euromaster - European Master of Science in Viticulture and Enology / Instituto Superior de Agronomia. Universidade de Lisboa / Montpellier SupAgro. Departement biologie - ecologie
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-01-01T00:00:00Z
2025-12-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/25401
TID:203083644
url http://hdl.handle.net/10400.5/25401
identifier_str_mv TID:203083644
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Hare, T. - Assessing berry growth and quality in the context of a study on Grenache Noir irrigation for the production of Rosé wine. Lisboa: ISA, 2019, 99 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
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publisher.none.fl_str_mv s.n
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