The results of research on the formation of productivity of alfalfa varieties for hay in non-irrigated agrophytocenoses under conditions of global warming in the steppe of southern Ukraine are presented. It was found that some varieties zoned in Ukraine are more adapted to the arid conditions of the southern steppe and therefore more productive (5.5-11.7% in hay harvest) compared to control plants (Nadezhda variety - hay yield on average for four years of alfalfa life amounted to 2.84 t / ha)
