The use of vegetable fibre can reduce plant-protection product residues by up to 80% in white musts, with a more limited effect in red musts.. The method can be applied in cellar, as a complement to the responsible use of products in the vineyard.
The 451 wines analysed on the VITISWISS national platform for monitoring plant-protection product residues show that Swiss wines possess a high level of quality, with only two cases of non-compliance.
A survey conducted in the Canton of Vaud on Chasselas reveals frequent nitrogen deficiencies in the vineyard for the 2022-2023 vintage, despite the application of soil supplements. Only a third of those surveyed measure yeast-assimilable nitrogen (YAN) in the must.