Enoforum 2021
IVES 9 IVES Conference Series 9 Enoforum Web 9 Enoforum Web Conference 2021 9 Study to optimize the effectiveness of copper treatments for low impact viticulture

Study to optimize the effectiveness of copper treatments for low impact viticulture

Abstract

Among all pathologies that afflict grapevine, Downy Mildew (DM) is the most important. Generally controlled using Copper (Cu), recently European Commission confirmed its usage but limiting the maximum amount to 28 Kg per hectare in 7 years (Reg. EU 2018/1981). Anyway, in the grape growing context it is difficult to reduce the use of Cu and chemicals, due to climate conditions.

The aim of this work was to determine the possibility to reduce Cu using and evaluating the variation of Cu cladding on grapevine leaves and grapes, in relation to climatic conditions. The efficacy level of the Cu protection given to DM and the correlation among them was also assessed. 

Five organic vineyards located in north-eastern of Italy were selected as experimental sites. Leaves and grapes were sampled during vegetative season and analysed for determining the quantity of elemental Cu by the use of ICP AES. Spreading of DM in vineyards was evaluated and climate data (rainfall, temperature and leaf wetness) measured. The correlation between DM, climate and Cu quantity on leaves and grapes was determined. First results indicate that the mean level of Cu applied by farmers (range: 3.77 to 8.88 µg/cm2 of Cu on leaves) during vegetative season is not enough to have an optimal protection against DM (diffusion on grapes and leaves: 40 to 50%). Thus, Cu treatments have to be pondered on the basis of meteorological data and previous infection of DM, so that it will be possible to determine the right quantity of Cu to be applied in correlation with DM presence and weather. 

Data will be correlated with image analysis, in order to quickly study the best conditions for Cu application directly on field, to reduce inputs in plant defence and to guarantee a quality and sustainable production.

DOI:

Publication date: April 23, 2021

Issue: Enoforum 2021

Type: Article

Authors

Giovanni Mian1*, Piergiorgio Comuzzo1, Lucilla Iacumin1, Roberto Zanzotti2, Emilio Celotti1

1 Department of AgriFood, Environmental and Animal Sciences, via Sondrio 2/A, 33100 Udine (Italy).
2 Technology Transfer Centre; Fondazione Edmund Mach; San Michele all ‘Adige (TN) Italy.

Contact the author

Keywords

Vineyard management, Downy Mildew; Treatments optimization, Copper

Tags

Enoforum 2021 | IVES Conference Series

Citation

Related articles…

In search of the taste of terroir – a challenge for sensory science

The definition of terroir has evolved throughout history, from something clearly negative in the XVIth-XVIIIth century to a complex multi-parametric construct with positive connotations but also with many scientific unknowns. Terroir has always been linked more or less explicitly to the sensory properties of the resulting products.
Read More

Soil Temperature and Climate Change: Implications for Mediterranean Vineyards 

More frequent and extreme temperatures and droughts pose challenges to the wine sector in Mediterranean Europe. Soil is crucial to sustain the equilibrium of ecosystems, economic growth and people’s prosperity worldwide. In viticulture, soils are a major component of the terroir and do influence vine’s growth, yield and berry composition. Soil temperature (ST) affects soil´s physical, chemical and biological processes and also crop growth. The impact of ST becomes even stronger when dealing with row crops such as grapevine, when considering the increased exposition to radiation. However, the impact of ST on crop performance remains poorly described, especially for extreme climatic conditions.

Read More

A GIS Analysis of New Zealand Terroir

This paper summarises a national survey of the geological setting of vineyards in New Zealand. We also provide an overview of climate, slope, aspect and varietals planted in New Zealand vineyards as a whole and for some individual regions.

Read More

Scientific research for an «Ad Maiora 4.1C» application «A step back towards the future universally sustainable EME4.1C». A concrete example of forward-looking and revolutionary entrepreneurial choices in the vine and wine sector

In 1979 an enlightened and farsighted business owner in an area and in an activity unknown to him and in 120 hectares of land cultivated with corn and wheat expressed to one of us that he wanted to start a business in the wine sector. The first innovative “Vigna Dogarina Scientific Applicative Project” has become famous and harmoniously inserted in and with the “Territoir” of eastern Veneto in northeastern Italy. The revolutionary project allowed one of us: 1. to put into practice results of research related to the applied philosophy, vision, methodology of the “Great MetaEthic Chain 4.1C®” algorithm of the “Conegliano Campus 5.1C®” that considers all material, immaterial, spiritual, technical, economic, environmental, social, existential, relational, ethical, MetaEthical factors with basic indexing in a harmonious chain “ 4.1C®” and application “5.1C®”, 2. to implement:

Read More

Understanding the genetic determinism of phenological and quality traits in ‘Corvina’ grape variety for selection of improved genotypes

Downy and powdery mildew are major issues in grapevine cultivation, requiring many phytosanitary treatments to ensure yield and quality. Climatic changes are also challenging grape cultivation

Read More