Rotation with crops other than barley will reduce the amount of fungal spores residing in residue. All barley varieties are susceptible. Attacks spring wheat, durum and some grasses. Leaf spotting develops from infections by fungus spores produced on barley or wheat stubble and residue. Spots first appear as small yellow flecks, later becoming tan with a yellow border.
Spots are boat shaped at first then merge to form blotches.
The margins of the spots are indefinite. Leaves dry and shrivel. Minimize residue on soil surface of re-crop land. Fungicides may be used to prevent infections. Current barley varieties are susceptible.