This article aims to understand the relationship between the actors and network formation in the reverse chain of agricultural pesticide packaging in the Central-South region of the State of Paraná. It is in the form of a case study of the Association of Agricultural Pesticide Distributors of the Central-South Region (Associação dos Distribuidores de Defensivos Agrícolas do Centro-Sul - ADDCS), which is responsible for the collection and safe disposal of packaging, together with the National Institute for Empty Packaging Processing (Instituto Nacional de Processamento de Embalagens Vazias - INPEV). In terms of methodology, the qualitative approach was used for this study, supported by the quantitative approach. Data were collected in the field using structured interviews, based on a roadmap of sociometric evaluation, and semi-structured interviews with key actors related to the organization that is the focus of the study. The results showed that there is an interorganizational relationship, but the results still point to a network with diffuse characteristics, i.e. actors with little contact may be factors that still restrict the achievement of better results. Often, the actions of the agents are prompted by possible legal sanctions that might be imposed on them.