EN
The aim of the study carried out in 2009–2010 was to determine the occurrence of diseases on winter wheat in organic farms in the region of Podkarpacie. Observations on the occurrence of winter wheat diseases were performed at weekly intervals from April to the end of the growing season, by analyzing 100 plants and calculating the average degree of infection of organs with a 5° scale, where the first degree determined 0.1–8% of the area with symptoms of disease, while the fifth degree concerned over 50% of the area with symptoms of disease.