The research was conducted in Boguchwała in crops of spring wheat, in the years 2006-2007, and spring triticale, in the years 2008-2009. The aim of the research was to evaluate susceptibility of different varieties of spring triticale and spring wheat to damage caused by the spring generation of barley gout fly. The experiment was installed with the randomized blocks method in four replications. Analyses covered 9 varieties of spring triticale and 16 varieties of spring wheat. The percentage of plants damaged by barley gout fly larvae was calculated by analysing 100 successive stems in a field. The analyses were conducted when the plants were at the full milk maturity stage. The plant damage was classified using three-step rating scale. In the years of research the spring wheat showed a high degree of damage, i.e, on average 41.6% damaged plants, while spring triticale showed on average a low degree, 8.9%. Individual varieties of spring triticale and spring wheat showed a different degree of damage by barley gout fly larvae. The least susceptible to damage caused by that pest were wheat varieties: Hewilla, Griva, Żura and Koksa, and spring triticale varieties: Mieszko, Milkaro and Milewo.

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