Characterization of the Folpet fungicidal activity against Plasmopara viticola

Grapevine downy mildew is an important disease in vineyards. It requires continuous work on plant protection products to supply alternative solutions for pest management, avoid fungicides extensive use, and comply with the EU regulations. Fungicides used to control Plasmopara viticula, the causal agent of downy mildew in grapevine are well known in their mode of action. However, a further understanding of the fungicide characteristics, namely, the physical mode of action (PMoA) is important to consider also. The PMoA refers to aspects other than the biochemical mode of action (Moa), that impact the molecule activity within the plant, pathogen, and environment relationships, namely the protection temporal efficacy, the application time, and the product retention and movement. The integration of this information in a plant protection strategy allows for timely and precise management of grapevine pathogens. This work had the purpose to study the Folpet, a well-known contact fungicide, and describing its protection temporal dynamic on grapevine plant material.