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''Titre de l'article:'' //Action publique et expertise dans la conservation des ressources agricoles aux Etats Unis dans les années 1930//\n''Auteur:'' Christophe Masutti\n''Revue:'' Ruralia ([[site web|http://ruralia.revues.org/]])\n\n__Résumé:__\n<<<\nDurant les années 1930, les sols agricoles américains furent soumis à une intense érosion éolienne : le Dust Bowl. En pleine crise économique, les solutions s'intègrèrent dans la politique réformiste de Franklin Roosevelt. Plusieurs analyses (Tobey, Worster, Hagen) définissent cette période comme un moment clé dans l'histoire des impacts environnementaux de l'agriculture et dans la recherche de solutions scientifiques et techniques en faveur de la conservation des ressources agricoles. Dans cet article, nous montrons comment cette recherche mobilisa autant les institutions que les acteurs politiques et les experts à l'intérieur d'une dynamique organisationnelle censée produire les outils et les connaissances nécessaires à une prise en charge cohérente de la crise. Nous établissons les correspondances entre les outils sociaux et techniques de la décision publique, les évolutions conjointes entre l'agronomie et l'écologie, leurs acteurs, leur rôle et leur immersion dans cette politique de conservation.\n<<<\n\n__Abstract:__\n<<<\nDuring the 1930s, American farms suffered from intense wind erosion: the Dust Bowl. In the midst of the Depression, solutions had to be part of the reformist politics of Franklin Roosevelt. Numerous scholars (Tobey, Worster, Hagen) have defined this period as key in the history of the environmental impact of agriculture and of the application of scientific and technological solutions to the conservation of agricultural resources. This article demonstrates how such research mobilized institutions, political actors, and experts in an organizational dynamic charged with producing the tools and knowledge necessary to take coherent charge of the crisis. I establish the relationships among the social tools and techniques of public decision making and the joint development of agronomy and ecology, its ac