The article is study of the repoonse of different winter barley varieties to different fertilization levels and plant protection levels to be able to determine the yield, the physiological and the agronomical point of references in the cultivation the varieties. This research and experiments was conducted at the University of Debrecen, Látókép Experimental Station of Plant Production on 5 different winter barley varieties which were selected for the research there include: SU Ellen, KH Tas, KG Puszta, KG Apavar and lastly Jallon which are all varieties found in Hungary.BSc/BAAgricultural Engineerin
