Quantification and management of Plasmopara viticola primary inoculum in soil – Towards prophylactic control of grapevine downy mildewC. Poeydebat, E. Courchinoux, L. Delière, M. Raynal and F. DelmotteBIO Web Conf., 50 (2022) 03011DOI: https://doi.org/10.1051/bioconf/20225003011