[The second annual technical report of west/east project for second period to improvement animal and plant prouction systems in arid zones 99-2000]

arid zones control de plagas crop yield development projects extension extension activities feed legumes fitomejoramiento herbicidas herbicide herbicides hordeum vulgare leguminosas forrajeras lutte antiravageur ovin ovinos performance de reproduction pest control plant breeding proyectos de desarrollo rendement des cultures rendimiento de cultivos reproductive performance reproductividad sheep siria suplementos supplements syria syrie variedades varieties vulgarisation weather reports zone aride