Fusarium ear blight and the occurrence and harmfulness of fungi colonizing the grain of selected varieties of winter triticale {Triticale) grown in the organic system

摘要

Triticale is an important feed component. Like other cereals, it can be infected by potentially mycotoxin-forming fungi of the Fusarium spp. In the years 2015-2017, the occurrence of fusariosis of ears and fungi colonizing winter triticale grain on selected cultivars cultivated in the organic system in two regions of the country was determined. Weather conditions during the flowering phase were not conducive to the infection by Fusarium spp., therefore, the symptoms were slight or trace. However, significant seed colonization by the pathogens was found. It varied depending on the year, cereal variety and location of the research. During the researched period in Grabow it averaged between 1.3 and 8.6% and in Taraskow between 2.1 and 13.0%, but in individual years it reached up to 22.8%. Fusarium avenaceum and Fusarium poae were most frequently isolated from grain.