Terroir 2006 banner
IVES 9 IVES Conference Series 9 Effets de l’application d’acide gibbérellique (GA3) sur la qualité de raisins et de vins produits en climat tropical au Nord-Est du Brésil

Effets de l’application d’acide gibbérellique (GA3) sur la qualité de raisins et de vins produits en climat tropical au Nord-Est du Brésil

Abstract

The honeydew moth Cryptoblabes gnidiella is the main problem for the wineries in the Northeast of the Brazil, because it attacks the bunch and reduces the quality of the grapes and the wines. In order to stretch out the bunch to facilitate the penetration of the insecticides, it was used gibberellic acid. Six treatments with different concentrations and different dates of application, and the control were compared. The bunches are compact, characteristic of the « Syrah » grapes in this region. The grape berries were analysed at harvest and wines were made by microvinifications. The grape berries showed different qualitative characteristics, as berry weight, number of berries, ºBrix, total acidity and heterogeneity of the maturation. The microvinifications were carried out with 50 kg of grapeberries into glass bottles of 20 L at 22ºC, for the alcoholic and malolactic fermentations, then stabilized and bottled. The wines were tasted by a panel of ten people and compared on smell and taste plans. The tasting results showed that the control treatment was the best graded wine. The application of gibberellic acid allowed to control the honeydew moth attack, but it caused a heterogeneity on grape maturation, with a lower quality of the grapes and wines compared to the control.

Download the PDF

DOI:

Publication date: December 22, 2021

Issue: Terroir 2006

Type: Article

Authors

André Luis CHAVES COSTA (1), José MONTEIRO SOARES (2), Giuliano ELIAS PEREIRA (3) and JOÃO SANTOS (4)

(1) Ing. Agronome, Boursier Facepe, Embrapa Semi-Árido, Petrolina-PE-Brasil
(2) Ing. Agronome, D.Sc., Chercheur Embrapa Semi-Árido, BR 428, km 152, Zona Rural, CP 23, 56302-970, Petrolina, PE, Brasil
(3) Ing. Agronome, Ph.D., Chercheur Embrapa Uva e Vinho / Semi-Árido, BR 428, km 152, Zona Rural, CP 23, 56302-970, Petrolina, PE – Brasil
(4) Ing. Agronome, ViniBrasil, Faz. Planaltino, 56.395-000, Lagoa Grande-PE-Brasil

Contact the author

; ; ; ; 

Keywords

Vitis vinifera, Cryptoblabes gnidiella, wine tasting, wine quality

Tags

IVES Conference Series | Terroir 2006

Citation

Related articles…

The effect of short and long-term water deficit on physiological performance and leaf microbiome of different rootstock and scion combinations

Climate change, particularly drought stress, threatens viticulture sustainability. Understanding scion-rootstock interactions and their link to the grapevine microbiome is key to improving vine health, productivity, and drought resilience.

Read More

Botrytis cinerea: Coconut or Catastrophe? Quantification of γ-Nonalactone in Botrytised and Non-Botrytised New Zealand Wines

g-Nonalactone has been identified as a significant contributor to the aroma profile of a range of wines and is associated with stonefruit and coconut descriptors.

Read More

Exploring the use of high-power ultrasound in white and rosé winemaking

Since the approval in 2019 of the use of high-power ultrasound (US) in winemaking to support extractive processes from grape to must, the study of this technology in red winemaking has increased significantly, with laboratory and semi-industrial scale studies.

Read More

Identification of loci associated with specialised metabolites in Vitis vinifera

Secondary (or specialised) metabolites such as terpenes and phenolic compounds are produced by plants for various roles which include defence against pathogens and herbivores, protection against abiotic stress, and plant signalling. Additionally, these metabolites influence grapevine quality traits such as colour, aroma, taste, and nutritional value. However, the biosynthesis of these metabolites is often complex and controlled by multiple genes which in grapevine are predominantly uncharacterised.

Read More

Des enjeux individuels à l’action collective

With the Federation of Wine Syndicates of Anjou and the Wine Syndicate of Angevin for direct sale to the Property, the Higher School of Agriculture of Angers was led to carry out, in 1995, a survey of winegrowers in Maine and Loire, with a view to grouping the supply of some of the wines intended for direct sale (Huet, 1995).

Read More