Faba bean (Vicia faba L.) is the most important legume crop in Ethiopia and the most single subsistence crop after the stable cereals. However its production is hampered by various biotic, abiotic and socio-economic factors. Among the biotic constraints, a new emerging disease known as Faba bean gall (Olpidium viciae) has become a serious threat to faba bean production in the country. Thus, field experiment was conducted to demonstrate effective fungicides to manage faba bean gall under natural infection. Two fungicides viz; Noble 25 WP and Ridomil 80 WP were demonstrated alongside control plots. The result revealed that use of Noble 25 WP and Ridomil 80 WP reduces faba bean gall explained by reducing AUDPC and percentage severity index (PSI) as well as higher yield. Noble 25 WP recorded the lowest faba bean gall PSI (15%) and AUDPC (855%/days). The yield advantage of the Noble 25 WP and Ridomil 80 WP compared to control was 58.04% and 18.43% respectively. A marginal rate of return of 681.90% and 678.16% were obtained from plots sprayed with Nobble 25WP and Ridomil 80 WP fungicides. Thus, those fungicides will be used as a component in integrated management of this disease.
Keywords: Faba bean, Fungicide demonstration, Gall, Management