Fusarium avanacoum infected wheat and triticale heads in Poland in each season between 1985 and 1989. The average number of heads infected byF avonacaum was 26 % for wheat and 46 % for triticale out of all examined heads withFusarium head blight symptoms.Fusarium-damaged wheat grain, naturally infected byF avenaceum, contained an average of 15.9±7.7 mg moniliformin/kg, healthy looking kernels from the same heads an average of 0.42±0.19 mg moniliformin/kg. Fusarfum-damaged kernels of triticale contained an average of 3.5 mg moniliformin/kg while healthy looking kernels from the same ears contained 0.25 mg/kg.