Zearalenone formation byFusarium crookwellense /Burgess, Nelson and Toussoun/ isolates from Poland and their pathogenicity towards cereals.

Fusarium crookwellense /B.N. and T./ isolated from affected cereals in Poland formed zearalenone on wheat grain up to 602 mg/kg. Tested isolates have been found strong to severe pathogens of wheat, rye, triticale and barley seedlings and corn ears with pathogenicity similar to that ofF. culmorum andF. graminearum.