Archives

Is it possible to approximate the technological and phenolic maturity of grapes by foliar application of elicitors?

AIM: The increase in the temperature and the more severe water stress conditions, trends observed in recent years as a consequence of climate change, are leading a mismatch between the technological and phenolic maturity of grapes [1]. As a strategy to face this situation, the use of apatite (Ap) nanoparticles as nano-transporters of the elicitor, […]

Read More

Preliminary evaluation of agronomic and enological properties of preselected grapevine clones of ‘Tempranillo’ and ‘Graciano’ in DOCa Rioja (Spain)

AIM. Cultivation of a few number of clones is causing the loss of vineyard biodiversity, resulting in the disappearance of biotypes that could be of interest to face future challenges, such as climate change or appearance of new pests. This topic is so relevant that OIV dedicated a recent resolution (OIV, 2019) to the recovery […]

Read More

Influence on grape aroma of nitrogen compounds and elicitors foliar applications in vineyards

AIM: The grape volatile compounds determine the wine quality and typicity [1]. Thus, looking for agronomic tools to improve its composition it is of great interest in the sector [2]. The aim of this work was to study the effects of several foliar applications in Garnacha, Tempranillo, and Graciano grapevines in order to enhance their […]

Read More

Foliar application of specific inactivated yeast to enhance the varietal aroma precursors accumulation on cv. Traminer

AIM: The production of grapes with a balanced composition is one of the main goals that agronomists and oenologists pursue to produce premium quality wines. The gap between technological (sugar/acid ratio) and aromatic maturity is expanding due to the increasing temperature and lack of rainfall during the ripening phase. In three consecutive years 2017, 2018 […]

Read More

Temperature variability inside a wine production area and its effect on vine phenology and grape ripening. An example from the Saint-Emilion-Pomerol

AIM: the aim of this study was to develop a method for fine-scale temperature zoning. The effect of temperature variability on vine phenology and grape composition was assessed in the production area of Saint-Emilion, Pomerol and their satellite appellations (Bordeaux, France). METHODS: 90 temperature sensors were set up inside the vine canopy over an area […]

Read More