[Promotion and intensification of food production, cereal especially, and restoration of soils in six communes of the prefecture of Gikongoro : the participative and differentiated extension - its principles, its accompaniments : work document no. 134]

agriculture intensive commercialisation constraints contrainte credit credito extension extension activities farm inputs farm size farming systems food security insumos agricolas intensive farming marketing mercadeo moyen de production agricole partenariat programme de vulgarisation recherche research rwanda seguridad alimentaria taille de l'exploitation agricole vulgarisation