Ethiopia: Institute of Agricultural Research: final report

agricultura de subsistencia agriculture de subsistance aliment pour animaux conduite des herbages cubierta vegetal ensayo environment environnement especies feed crops feeds gramineas graminee grasses grassland management grasslands herbage introduction de plantes manejo de praderas medio ambiente overgrazing pastizales pastures piensos plant cover plant introduction plantas forrajeras praderas production de semences projet de recherche recherche research research projects seed production sobrepastoreo species subsistence farming testage testing