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Strategies for copper reduction in grapevine, apple, roses and vegetables by using alternative experimental products

Tamm, Lucius; Werthe, Ursula; Thuerig, Barbara; Perazzolli, Michele; Giovannni, Oscar; Pertot, Ilaria; Schärer, Hans-Jakob; Apostolov, Stoilko and Schmitt, Annegret (2023) Strategies for copper reduction in grapevine, apple, roses and vegetables by using alternative experimental products. In: The International Society for Plant Pathology, The French Phytopathological Society (Eds.) 12th International Congress of Plant Pathology. Book of Abstract ICPP, pp. 994-995.

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Document available online at: https://www.icpp2023.org/programme/abstracts-book


Summary in the original language of the document

Reducing the use of copper fungicides with the aim of phasing out has a high priority in European policy as well as in organic farming. To reach this goal without compromising yields, all preventive strategies have to be implemented and several affordable alternative products need to be brought to the market. Within the EU-funded project RELACS (2018-2022), we investigated alternative compounds that had reached a high technology readiness level. We focused on major copper-relevant crops/pathogens (grapevine/Plasmopara viticola, apple/Venturia inaequalis, vegetables/downy mildews/late blight, oil-producing roses). As alternatives, two plant extracts including licorice leaf extract (Glycyrrhiza glabra) and a larch bark extract (Larix decidua), a rare sugar (tagatose) as well as a test product based on fatty acids (NEU 1143F in apple) were evaluated. Refined strategies with these alternatives were tested, adapted and validated under practical conditions in different European countries, and further aspects of importance (e.g. mode of action, wine fermentation, compatibility with other plant protection products) examined. All alternatives proved to be effective in one or more of the investigated crops. In some cases, their efficacy as stand-alone treatment was comparable to that of copper. In other cases, the combination of the alternatives with reduced amounts of copper or in combination with other standard methods provided effective protection of the crops.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:copper replacement, botanical plant protection products RELACS, Abacus, FiBL25054
Agrovoc keywords:
Language
Value
URI
English
copper
http://aims.fao.org/aos/agrovoc/c_1868
English
fungicides
http://aims.fao.org/aos/agrovoc/c_3146
English
botanical pesticides
http://aims.fao.org/aos/agrovoc/c_27844
Subjects: Crop husbandry > Crop health, quality, protection
Crop husbandry > Production systems > Fruit and berries > Viticulture
Research affiliation: European Union > Horizon 2020 > RELACS
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Crops > Crop protection > Crop protection products
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Crops > Special crops > Winegrowing
Horizon Europe or H2020 Grant Agreement Number:773431
Deposited By: Thürig, Dr. Barbara
ID Code:51907
Deposited On:07 Nov 2023 08:27
Last Modified:07 Nov 2023 08:27
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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