[Activities made in the project alimentary strategy support in the national input program (APNI) Comparative study of the manure formula advocated by ISAR and the manure formula advocated by the FAO fertilizer program on the corn culture]

crop yield development projects farm inputs fertilisation fertilizer application formation haricot commun inorganic fertilizers insumos agricolas kidney beans moyen de production agricole plant production proyectos de desarrollo recherche rendement des cultures rendimiento de cultivos research rwanda training zea mays