terclim by ICS banner
IVES 9 IVES Conference Series 9 Utilizing ozone for the management of powdery mildew (Erysiphe necator Schwein.) in vineyards: potential and challenges

Utilizing ozone for the management of powdery mildew (Erysiphe necator Schwein.) in vineyards: potential and challenges

Abstract

Powdery mildew, caused by fungal pathogens, poses a significant threat to grapevines in the DOCa Rioja region. In efforts to improve control strategies while reducing reliance on conventional phytosanitary products, ozone could constitute a potential alternative. However, it has short persistence, thus requiring frequent treatments. This study aimed to assess the suitability of ozone as an active substance for controlling powdery mildew within a phytosanitary strategy aimed at reducing conventional phytosanitary product usage. The strategy integrating ozone with conventional products yielded powdery mildew levels comparable to conventional treatments in both disease incidence and severity. Nonetheless, employing a strategy solely based on ozone applications resulted in higher disease incidence and severity levels compared to the conventional treatment, particularly in the Tempranillo variety. These findings underscore the potential of ozone as a component of integrated disease management strategies in vineyards, offering an environmentally friendly alternative to traditional phytosanitary products. However, caution is warranted when relying solely on ozone, as observed efficacy variations across grape varieties suggest a need for tailored approaches. Further research is needed to optimize ozone application methods and explore its interactions with different grapevine cultivars and environmental conditions. In conclusion, while ozone shows promise as a tool for reducing conventional phytosanitary product usage in powdery mildew control, its effectiveness may be limited as a standalone method, particularly in certain grape varieties like Tempranillo. This study contributes to ongoing efforts to refine disease management strategies in viticulture, emphasizing the importance of integrated approaches for sustainable grape production.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Cuadrado-Galera Isabel1*, Varela Alejandro1, Arbizu-Milagro, Julia1, Tascón Alberto1, González-López Óscar1 ,Castillo-Ruiz Francisco José1, 2

1Universidad de La Rioja. Departamento de Agricultura y Alimentación. Facultad de Ciencia y Tecnología, C/ Madre de Dios, 53, 26006, Logroño, España
2Departamento de Ingeniería Rural, Construcciones Civiles y Proyectos de Ingeniería. E.T.S. de Ingeniería Agronómica y de Montes, Universidad de Córdoba, Campus de Rabanales, Edificio Leonardo Da Vinci, ctra. N-IV, km 396, 14014, Córdoba, España

Contact the author*

Keywords

incidence, severity, ozone, grapevines, phytosanitary treatment

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

NADES extraction of anthocyanins derivatives from grape pomace

Grape pomace is one of the main by-products generated after pressing in wine-making. It’s valorization through the extraction of bioactive compounds is the answer for the development of sustainable processes. Nevertheless, in the recovery of anthocyanins derivatives, the extraction stage continues to be a limiting step. The nature of the sample and the type of solvent determine the efficiency of the process

Read More

Mapping climate and bioclimatic indices at high-resolution in vineyard regions

Many of the world’s vineyard regions are located in regions of complex terrain, with the result there is significant local climate variation.

Read More

Kinetic study of browning caused by laccase activity using different substrates

To our knowledge all the studies about laccase kinetics and its inhibition have been performed with substrates and conditions very different from those of real grape juice. Moreover, none of these researches really measure enzymatic browning, since they have not taken into account what happens after the oxidation of o-diphenols in o-diquinones and their subsequent polymerization to form melanins1. For that reason, the aim of this research was to develop a new model to measure the kinetics of browning caused by Botrytis cinerea laccase under conditions much closer to those of grape juice and using the substrates naturally present in it.

Read More

Can grapevine intra-varietal genetic variability be a tool for climate change adaptation? A case study at a hot and dry environment

Climate change projections point to an increase of temperatures and changes in rainfall patterns in the mediterranean region.

Read More

Ripening behaviour and grape must quality of eleven white resistant varieties in Trentino

In a situation of uncertainty towards the overall effect of climate change and the reduction of pestice utilization on quality, the wine sector needs to maintain the profitability of producers, which inexorably depends on ensuring the quality of grapes and wines. Among the various alternatives that can be adopted, hybrid varieties carrying resistance genes are currently gaining the attention of researchers and producers. Some of them are already a reality and are included in the national catalogue of some countries, selected by research institutes all over Europe.

Read More