The use of copper in viticulture, and more particularly in organic production, is a matter of debate and this substance is among the products presenting a particular risk potential.
The InNoVaudCuivre project was initiated in 2021 for a period of 4 years in order to evaluate new products in development to substitute or limit the use of copper against downy mildew in grapevines in an experimental plot on the Agrilogie estate in Marcelin (Morges). Thanks to the support of the canton of Vaud, the project made it possible to bring together the strengths of different research organisations in Switzerland (Agroscope, CHANGINS, FiBL, HEPIA) to share and evaluate the products being developed to replace copper.
The efficacy trial of the products in Marcelin is carried out according to the international GEP (Good Experimental Practice) methods. The 2021 and 2022 vintages with extreme and no downy mildew pressure, respectively, did not provide sufficient results for product evaluation. At least two more vintages of experimentation are needed to adapt and continue to develop references to find alternatives to copper against grapevine downy mildew and to judge their limits. Comparable trials with similar products are being conducted by Agroscope in Changins and by FiBL in Frick.
Project management
