Carbon and nitrogen dynamics of potato residues and sheep dung in a two-year rotation cultivation in the Bolivian Altiplano Coûteaux, M.M. /Hervé, Dominique Mita, V. DECOMPOSITION ROTATION DES CULTURES POMME DE TERRE FERTILISATION DU SOL RESIDU VEGETAL JACHERE CARBONE AZOTE CENDRES CLIMAT MINERALISATION ANALYSE CHIMIQUE ANALYSE STATISTIQUE MODELISATION ETUDE COMPARATIVE ORGE In the high Andes, the traditional rotation is two or three years cropping with potatoes and cereals after 5 to 10 years of fallow. In the Bolivian Altiplano, the balance of available soil nitrogen (N) was monitored during 2 years of cultivation after 3 years rotation. Potatoes or barley were planted in the second year. Fertilization with sheep dung was only applied for potato cropping. The dynamics of decomposition and N-release of the amendment and the plant residues were measured using litterbag incubation in the field. Using te N-release rates provided by the litterbag experiment, we modeled the fate of the mineralizable N originating from the sheep dung and the potato residues decomposition of a 2-year succession to assess if the N supply from fertilization covered the pant demand. (résumé d'auteur) 2008 text https://www.documentation.ird.fr/hor/fdi:010045518 fdi:010045518 Coûteaux M.M., Hervé Dominique, Mita V.. Carbon and nitrogen dynamics of potato residues and sheep dung in a two-year rotation cultivation in the Bolivian Altiplano. 2008, 39 (3-4), 475-498 EN BOLIVIE ANDES