2024/10/10 by Fabre, Frédéric, Miclot, Anne-Sophie, Rimbaud, Loup +4
#Analyse coût-bénéfice #Ateliers de coconstruction #Cave coopérative resistant varieties #Co-construction workshops #Companion modelling #Cost-benefit analysis #Downy mildew #Durabilité des résistances #Grapevine mathematical modelling #Mildiou de la vigne #Modélisation d'accompagnement #Modélisation mathématique #Resistance durability #Territoire viticole #Variétés résistantes #Wine co-operative #Wine-growing territory
paper · doi:10.17180/ciag-2024-vol96-art05
In this work, we adapted an existing mathematical model (landsepi) to simulate collective deployment scenarios of downy-mildew resistant grapevine varieties in wine-growing regions. We first used this model to explore the effects of the potential coexistence of varieties with monogenic and polygenic resistance in simplified agricultural landscapes, a possibility now available to winegrowers. Then, we worked in the region of the PDO Buzet (south-western France) to co-construct, evaluate, and compare a set of deployment scenarios for the adoption of resistant grapevine varieties in line with the strategic vision of the wine co-operative "Nous, les vignerons de Buzet". Finally, these scenarios were evaluated for their effects on epidemic control, resistance durability, reduction of fungicide treatments and economic performance.