The paper examines the impact of trust in an agricultural marketing cooperative. The aim is to explore how the trust among members and between members and management affect the commitment of members towards the cooperative (group cohesion) and their satisfaction with the cooperative. Trust is examined from two dimensions: cognitive and affective. Our results have clearly proved that trust has a positive impact on group cohesion and satisfaction. According to the experiences, however, the impact of examined dimensions of trust is differentiated: the statistical models regarded the impact of affective dimensions on group cohesion and members’ satisfaction more important than the impact of cognitive dimension.