Disease caused by Bipolaris sorokiniana . The pathogen causes spot blotch on primary leaves of barley (A) , wheat (B) , and flag leaves of wheat (C). Necrotic lesions are light coloured on barley compared to darker lesions on wheat. Barley leaves develop more chlorosis as compared to wheat. Common root rot (D) , crown rot (E) , and black point (F) (compare with healthy grains in G) typically occur in wheat. Similar symptoms are found in barley (not shown)