EFFECT OF CUMULATIVE APPLICATION OF NITROGEN AND PGPR ON THE VARIOUS TRAITS OF BARLEY (HORDEUM VULGARE L.) UNDER DROUGHT STRESS CONDITIONS Journal title: Journal of Experimental Biology and Agricultural Sciences Authors: Ehsan Rezaei, Mir Reza Miri, Hamid Reza Shamsaee, Mohsen Hamidi, Babak Sepehri, Farid Golzardi Subject(s):