Strategies in vineyard establishment to face global warming in viticulture: a mini review.

Different technological solutions are developing in the wine industry to mitigate the negative effects of the current global warming to mainly achieve wines with a lower alcohol content. These proposed solutions mostly act at the oenological level and are focused on intervening in the raw material to be transformed; that is, on reducing the concentration of sugar in the must using filtration techniques or also on wine dealcoholizing by physical processes. These techniques are intended to offer solutions and respond to new consumer expectations, but they may be considered too artificial to be widely accepted. In this way, viticultural strategies may offer a natural solution to obtain grapes with low sugar content, maximizing their quality by delaying ripening. This mini review surveys the viticultural strategies that can be applied in the establishment of a vineyard - that is, when it comes to planting of a new vineyard - such as vineyard altitude, latitude, orientation, and slope, as well as rootstock, variety, clone, training system, and row orientation and slope, with the aim to mitigate the negative effects of climate change on grape and wine quality and to delay grape maturation. Finally, we propose a ponderation of the strategies discussed to contextualize its importance to face global warming in viticulture. © 2020 Society of Chemical Industry.

Virus interference on local scale viticulture: the case of Moll variety from Majorca (Spain)

In Europe, many autochthonous grapevines (Vitis vinifera L.) are only cultivated at local scale, but play a very important economic role due to their strict relation with terroir and wine tipicity. In this study, it was pursued to evaluate the influence of several factors on performance of Moll, the main autochthonous white variety of Majorca, by means of the database coming from a clonal preselection. The effects of multiple virus infections, vintage and vineyard components were studied by univariate linear models and principal component analysis, starting from measurement of production and must quality parameters of several vines located in 14 vineyards belonging to two appellations during four consecutive years (2001-2004). Absence of multiple virus infections, double cordon system, high clay content and Useful Water Reserve in soils have enhanced vine production without inducing considerable alterations in sugar accumulation in berries and acidity. Moll variety presented great viticultural and oenological potentials. Fertile and deep soils should be preferred in order to maximize production. Also, the use of certified propagation material is strongly recommended. However, further investigations are required to optimize must quality by opportune managements. This study does not provide only essential information to improve Moll cultivation in Majorca, but it also represents a useful example to analyze grapevine varieties that are endemically infected by viruses. In fact, in such situations, it may be supposed an insidious interference by viruses on terroir and wine tipicity.(AU)

Virus interference on local scale viticulture: the case of Moll variety from Majorca (Spain)

In Europe, many autochthonous grapevines (Vitis vinifera L.) are only cultivated at local scale, but play a very important economic role due to their strict relation with terroir and wine tipicity. In this study, it was pursued to evaluate the influence of several factors on performance of Moll, the main autochthonous white variety of Majorca, by means of the database coming from a clonal preselection. The effects of multiple virus infections, vintage and vineyard components were studied by univariate linear models and principal component analysis, starting from measurement of production and must quality parameters of several vines located in 14 vineyards belonging to two appellations during four consecutive years (2001-2004). Absence of multiple virus infections, double cordon system, high clay content and Useful Water Reserve in soils have enhanced vine production without inducing considerable alterations in sugar accumulation in berries and acidity. Moll variety presented great viticultural and oenological potentials. Fertile and deep soils should be preferred in order to maximize production. Also, the use of certified propagation material is strongly recommended. However, further investigations are required to optimize must quality by opportune managements. This study does not provide only essential information to improve Moll cultivation in Majorca, but it also represents a useful example to analyze grapevine varieties that are endemically infected by viruses. In fact, in such situations, it may be supposed an insidious interference by viruses on terroir and wine tipicity.