terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Green pruning of shoots to force new sprouting of buds, in fruit set and in pea size: vegetative, productive and maturation effects, in cv. Verdejo

Green pruning of shoots to force new sprouting of buds, in fruit set and in pea size: vegetative, productive and maturation effects, in cv. Verdejo

Abstract

The context of climate crisis leads to the acceleration of technological ripening of grapes, with unsuitable loss of acidity, so various vineyard management alternatives are being considered to delay the grape ripening. The delay of the vegetative cycle towards a period of milder temperatures affects ripening, but vine behavior can vary according to the area, conduction, watering, variety, etc. A work is proposed to know the response to the green pruning of shoots, executed in fruit set and in pea size, in cv. Verdejo. During the period 2020-2021, in Valladolid, the response of cv. Verdejo, to the application, in 2020, of the following experimental treatments: T, control (no green pruning); Fj6, pruning to 6 nodes in fruit set; Fj3, pruning to 3 nodes in fruit set; Fk6, pruning to 6 nodes in pea size; Fk3, pruning to 3 nodes in pea size. Pruning was done by eliminating all the green organs (leaves, laterals and clusters) of the respected part (6 or 3 nodes) of all 16 shoots per vine. The design is in 4 random blocks, with elementary plot of 12 vines, in a vineyard planted in 2012, conducted on a vertical trellis and winter pruned in a bilateral Royat cordon with 8 spurs per vine. The effect of green pruning shoots, increasing the number of nodes 3 or 6 times, produced a notable increase in grape production, around 60% in Fj6 and Fj3 and 30% in Fk6, and a notable decrease in winter pruning wood, with average of 50% reduction, negatively affecting the vegetative response, and, above all, productive in the following campaign. Qualitatively, the green pruning of shoots greatly delayed ripening, reducing sugars and increasing the acidity of the grape, with variable intensity that was highly dependent on the time of pruning of the shoots.

Acknowledgements: Project PID2019-105039RR-C42 (MCIN/AEI) and Junta de Castilla y León.

DOI:

Publication date: October 11, 2023

Issue: ICGWS 2023

Type: Poster

Authors

J. Yuste1, D. Martínez-Porro1

1Instituto Tecnológico Agrario de Castilla y León, 47071 Valladolid (España)

Contact the author*

Keywords

acidity, grapes, node, ripening, sugars

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Water and nutritional savings shape non-structural carbohydrates in grapevine (Vitis vinifera L.) cuttings

Global changes and sustainability challenge researchers in saving water and nutrients. The response of woody crops, which can be forced at facing more drought events during their life, is particularly important. Vitis vinifera can be an important model for its relevance in countries subjected to climate changes and its breeding, requiring cuttings plantation and strong pruning.

The characterization of Vitis vinifera L cv. Cabernet sauvignon: the contribution of Ecklonia maxima seaweed extract

Biostimulants and biofertilizers are considered environmentally friendly and cost-effective alternatives to synthetic fertilizers, plant growth regulators and crop improvement products. Broadly, plant biostimulants are expected to improve nutrient use efficiency, tolerance to abiotic stress, quality traits and availability of nutrients in the soil or rhizosphere. Currently, seaweed extracts account for more than 33% of the total plant biostimulant market. Within this category, Ascophyllum nodosum (AN), is the most widely studied and applied in biostimulant formulations.

Rootstock regulation of scion phenotypes: the relationship between rootstock parentage and petiole mineral concentration

Rootstocks not only provide tolerance to Phylloxera, but also ensure the supply of water and mineral nutrients to the whole plant. Rootstocks are an important way of adapting to environmental conditions while conserving the typical features of scion varieties. We can exploit the large diversity of rootstocks used worldwide to aid this adaptation. The aim of this study was to characterise rootstock regulation of scion mineral status and its relation with scion development.

Can yeast cells sense other yeasts beyond competition interactions?

The utilization of non-Saccharomyces yeasts in the wine industry has increased significantly in recent years. Alternative species need commonly be employed in combination with Saccharomyces cerevisiae to avoid stuck fermentation, or microbial spoilage. The employment of more than one yeast starter can lead to interactions between different species with an impact on the outcome of wine fermentation. Previous studies[1] demonstrated that S. cerevisiae elicits transcriptional responses with both shared and species-specific features in co-culture with other yeast species.

Overall conceptual characterization of aged dry white wines using a mental descriptive questionnaire

The purpose of the present study was to understand the overall concept of an aged dry white wine using a descriptive mental questionnaire. A total of 680 worldwide participants, grouped according to their involvement in the wine business, replied to an online questionnaire to characterize the sensory analytical and synthetic descriptors of an aged dry white wine. The descriptors were selected using a Check-All-That-Apply (CATA) approach concerning wine colour, aroma, taste, mouthfeel, and global appreciation.