Fields experiments were conducted at the Brody Experimental Station in 2011–2012. The aim of studies was to determine the affect of tillage systems (conventional, reduced and direct drilling) on stem base, root, foliar and ears diseases severity on winter wheat. The incidence of stem base and root has been shown to increase under reduced tillage and direct drilling to compare with ploughing system. The conventional tillage increased the incidence of leaf and ear diseases of winter wheat in relation to the ploughingless tillage systems. Only the incidence of Drechslera tritici-repentis was significantly higher under reduced tillage and direct drilling than under conventional tillage in the first year of experiment.