Among biotic factors diseases were the most important constraints of Faba bean yield in Ethiopia. This investigation was designed: to identify, document, prioritize and be acquainted with distribution of fungal diseases of Faba bean in Ethiopia; to map geographical distribution areas for economically important faba bean fungal diseases. Assessments of diseases were accomplished in 2017 and 2018 main growing season of the crop throughout the country. From each representative zone of major growing areas, districts were surveyed based on production of faba bean and at an interval of 5-10 kilometres. Each sampling point was checked with the global positioning system (GPS) using GPS receiver for altitude and co-ordinates. Survey results revealed the prevalence, incidence and severity of different fungal diseases across all districts in spite of the different levels recorded. Among 191 fields observed, the overall prevalence of Aschochyta fabae, Botrytis fabae and Olpidium viciae were 72.2%, 70.7%, and 45.6%, respectively. Botrytis fabae was severe in East Arsi compared to other zones with the maximum mean incidence of 98.89% and percent disease index of 33.56% whereas the highest mean faba bean gall, FBG, intensity up to 72.9% incidence and 28.3% PDI were calculated from different districts of North Shewa of Amhara region. The most vulnerable stage for the outbreak of epidemics of most fungal diseases was reproductive stage. Based on these results initiation of alternative management options at hotspot areas, evaluation of new source of genotypes and their screening under artificial inoculation should be given due attention for economically important diseases.
Keywords: Diseases, Faba bean, Olpidium viciae, Incidence, Percent disease index, Prevalence, vulnerable