terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Agronomic behavior of three grape varieties in different planting density and irrigation treatments

Agronomic behavior of three grape varieties in different planting density and irrigation treatments

Abstract

In the O Ribeiro Denomination of Origin, there is a winemaking tradition of growing vines under a high-density plantation framework (8,920 vines/ha) and maintaining its vegetative cycle under rainfed conditions.

Currently, viticulture is advancing to plantation frames in which the density is considered medium (5,555 vines/ha), thus allowing mechanized work to be carried out for vineyard management operations. Although, the application of irrigation applied proportionally to the needs of the vegetative cycle of the vine, is a factor that increasingly helps a good development of the vine compared to the summer period, with increasingly uncertain weather forecasts.

For this reason, the main objective of this work is the agronomic evaluation of three grape varieties, with both planting densities (medium and high), with irrigation (deficit irrigation – 30% ETo) and rainfed treatments, with four replications (seven vines) which allow to determine possible differences in parameters of production and quality.

The plot under study is framed under the Denomination of Origin of O Ribeiro, belonging to the viticulture and oenology station of Galicia (Leiro, Ourense).

The study was carried out in the 2021 and 2022 seasons over two red varieties (Mencia and Sousón) and the most representative white variety of the region, Treixadura.

With the results obtained, it has been possible to observe significant differences performed with a statistical test ANOVA, between irrigation treatments when were evaluated the production parameters, obtaining a higher production per vine and number of clusters when irrigation is applied and when it is in the medium density plantation framework in the three grape varieties studied. Regarding the differences observed between vineyard planting frames, significant differences have been observed in Mencia and Treixadura grape varieties, favoring in both cases the medium density planting frame, with which it has been obtained a greater production of grapes with a greater number of clusters per plant.

Regarding quality parameters, density and irrigation treatments have significant differences in terms of malic acid content in the high planting density.

As conclusions, it has been possible to observe how in none of the varieties, the quality parameters are affected when the vineyard was in a plantation framework in which a mechanized an comfortable work of the vineyard is allowed, compared to the plantation framework of traditional area.

DOI:

Publication date: October 10, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Rodríguez-Febereiro M1*, Fandiño M1, Abarquero E2, Cancela J.J1, Díaz-Losada E2

1GI-1716-Universidad de Santiago de Compostela, Escuela Politécnica Superior de Ingeniería, Rúa Benigno Ledo s/n 27002, Lugo, España.
2Estación de Viticultura e Enoloxía de Galicia (AGACAL_EVEGA). Ponte San Clodio s/n, 32428, Leiro, Ourense (España).

Contact the author*

Keywords

irrigation, density, Mencia, Sousón, Treixadura

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Physicochemical behaviour of wine spirit and wine distillate aged in Sherry Casks® and Brandy casks

Brandy is a spirit drink made from “wine spirit” (<86% Alcohol by Volume – ABV; high levels of congeners and they are mainly less volatile than ethanol), it may be blended with a “wine distillate” (<94.8%ABV; low levels of congeners and these are mainly more volatile than ethanol), as long as that distillate does not exceed a maximum of 50% of the alcoholic content of the finished product[1]. Brandy must be aged for at least 6 months in oak casks with <1000L of capacity. During ageing, changes occur in colour, flavour, and aroma that improve the quality of the original distillate.

Read More

Biodiversity and biocontrol ability of Trichoderma natural populations in soil vineyards from Castilla y León region (Spain)

Trichoderma is a microorganism present in many agricultural soils and some of its species could be used as natural biological control agents. In this work, the presence of natural populations of Trichoderma was estimated in soil vineyard and its biocontrol capacity against Phaeoacremonium minimum, one of the main agent causals of grapevine trunk diseases instead of using pesticides. Moreover, physicochemical variables in soil such as pH, organic matter and nutrients were evaluated to determine a possible correlation to natural populations of Trichoderma.

Read More

“Compost Application in the Vineyard: Effects on Soil Nutrition and Compaction”

The mechanization of pruning and harvesting in vineyards has increased the risk of soil compaction. To reclaim soil properties or avoid this degradation process, it is crucial to properly manage the soil organic matter, and the application of compost derived from the vines themselves is a strategy to achieve this. The objective of this study was to evaluate the properties of soil treated with different doses of compost applied both on the vine row and the inter rows of a Vitis vinifera crop.

Read More

Grapevine adaptation to drought and resistance to Neofusicoccum parvum, causal agent of Botryosphaeria dieback

The sustainability of viticulture in response to climate change has been addressed mainly considering agronomic impacts, such as water management and diseases, either separately or together.
In grapevines, there is strong evidence that different genotypes respond differently to biotic and abiotic stresses. A screening was conducted on various local cultivars in response to drought and Neofusicoum parvum infection aiming to evaluate their susceptibility to abiotic stress and resistance to fungal diseases.

Read More

Assessing the Effectiveness of Electrodialysis in Controlling Brettanomyces Growth in Wine

Brettanomyces yeast can negatively impact the quality and stability of wines, posing a significant challenge to winemakers. [1] This study aims to develop novel management practices to limit Brettanomyces impact on wines by evaluating the effectiveness of electrodialysis (ED) technology in removing magnesium (Mg2+) from wine to prevent the development of Brettanomyces yeast. The ED technique utilizes charged membranes to extract ions from the wine, and it is considered an alternative to cold stabilization that requires less energy. [2]

Read More