In the research reported here, we studied three cereal-growing areas in the French region of Burgundy, concentrating on the dynamics of change with regard to farmers' use of pesticides and new soil management practices on the one hand and on farmers' professional dialogue networks on the other. Our aim in this article is to show the link between the network types and the dynamics of change in their members' behavior. Three types of coalitional networks appeared. In the “mainly bonding” network, the roles of innovator and early adopter were the most highly shared among farmers. In the “mainly bridging” network, these roles were occupied by a single person holding a central position within the network. In the “bonding and bridging” structure, the roles of innovator and early adopter were held by different individuals. We further observed that the farmers developing integrated crop protection techniques occupied different positions from those implementing complete no-tillage, which is not promoted by technical advisory services. A rivalry thus appears to emerge between these two orientations in which the farmers are engaged within the network.