The culture of the Valencian irrigated land has been surrounded by a series of factors that have helped to form a refractory consciousness of association in thepeasant. owever, this behaviour, generalized, has had notable and significant exceptions, whose antecedents, genesis and posterior evolution are the theme of tbis article. After the few conserved documents, the development, growth and crisis of association is drawn, to characterize definitively a phenomenon that, in the Valencian area, goes with the economic conjuncture: mighty in bad times, weak in good times. A revealing symptom.