The study aimed to analyse the processes of construction, institutionalization and implementation of agroecology and organic agriculture (PEAPO) policies in several federated states of Brazil to identify progress, obstacles and effects of interactions between public authorities and civil society. Theoretical reference system and method: - Application of a common analysis framework built by the Public Policy and Rural Development Network in Latin America and the Caribbean (PP-AL) in 11 states: Amazonas (AM), Bahia (BA), Federal District (DF), Maranhão (MA), Minas Gerais (MG), Pará (PA), Paraná (PR), Rio de Janeiro (RJ), Rio Grande do Sul (RS), Sergipe (SE), São Paulo (SP) + city of São Paulo; - Analysis framework of the dynamics of public action in 5 points (Lascoumes and Le Gales, 2007): situation and institutionalization of policies, actors and coalitions, representations (conceptions of agroecology), governance and main instruments; - Tools: document analysis, dialogue with the actors and series of semi-structured interviews. Four dimensions are to be taken into account in the process of institutionalization of agroecology at the level of the federated states: - An early trajectory in terms of construction programs and actions in favour of agroecology and organic production in certain states (RS, DF, PR) compared to the national policy (PNAPO) but also difficulties in establishing mechanisms of transversality and coordination between different instruments; - The diversity of institutionalization mechanisms (legal frameworks, instruments, instances of participation and social control) sets challenges for structuring in a coherent frame of reference in order to guide the action of the institutions; - The institutions / organizations involved in this construction internalize and manage this participation and the commitments in various ways, but not all of them manage to influence or integrate the management or implementation institutions; - However, the construction