The effectiveness of an application of foliar nitrogen at veraison depends on the initial level of vine nitrogen deficiency, an Agroscope study has shown. The threshold levels of assimilable nitrogen deficiency in the grape must are validated for Chardonnay but still need to be confirmed for Sauvignon Blanc.
Metschnikowia pulcherrima is a naturally occurring yeast with applications in agriculture, the food industry and biotechnology. Agroscope is investigating this yeast in particular with regard to biocontrol applications in plant protection.
Soil management lies at the heart of major global warming and sustainable viticulture issues. In this context, inter-row plant cover in vineyards comes with its share of benefits and drawbacks.