Leucaena as a forage crop on small farms in Malawi

africa africa south of sahara afrique afrique anglophone afrique au sud du sahara afrique australe agricultural structure anglophone africa arbre arbre d'ombrage cosecha crops cultivos dicotiledoneas dicotyledons economic plants empresas enterprises entreprise farm size farm structure feed crops feed legumes harvesting legumes leguminosae leguminosas leguminosas forrajeras leucaena methode methods mimosoideae petite entreprise plant production plantas plantas forrajeras plantas protectoras plante plante de culture plante de protection plants procesamiento processing production protective plants rosales shade trees soil reclamation plants southern africa structure agricole structure d'exploitation agricole traitement trees