Concevoir et expérimenter des vergers agroforestiers en Agriculture Biologique (VERtiCAL).

The VERtiCAL research project focused from 2013 to 2018 on the spatial and temporal diversification of fruit tree systems as a relevant mean for reducing pesticide use. The project resulted in the design and assessment of two fruit agroforestry systems (AFS), called "TAB" and "Durette", managed in organic farming and with specific technical and economic characteristics. The project allowed co-design experiences and led to the development of a new tool for ex ante assessment of AFS. First results show a 52% reduction of pesticides on the TAB system compared to a conventional reference system while reaching yield objectives, and a very low reliance to pesticides on the Durette system. As for biodiversity, specific richness of birds increased from 12 to 24 species on the Durette system, from 24 to 35 on the TAB system. Spatial planning fulfills the working organization, but does not make it possible to fully control pests yet. Results will be consolidated in the continuing EMPUSA project (2019-2025). Both sites are now important demonstration sites for farmers and agricultural advisors interested in implementing AFS.