A nonparametric analysis of the impact of agri-environmental advisory activities on best management practice adoption: A case study of Québec

► Agri-environmental support plan increases adoption of best management practices. ► Advisory clubs have a vertical (i.e. formal) diffusion effect. ► Advisory clubs have informal diffusion effect for the more sophisticated practices. ► Controlling for endogeneity and heterogeneity improve the quality of the results.