Distribution, pathogenic variation, and integratedManagement of common bean (Phaseolus vulgaris L.)Angular leaf spot (Pseudocercospora griseola) in southwest Ethiopia

Abstract

Common bean (Phaseolus vulgaris L.) is the most important grain directly consumed in the human diet, accounting to half of the grain legumes consumed worldwide. Angular leaf spots (ALS), caused by Pseudocercospora griseola is a major and frequently occurring disease of common bean in Ethiopia. Therefore, the current study was conducted with the objective of assessing the distribution of ALS, examining the relationship between ALS and biophysical and agronomic factors and evaluating the disease management strategies through host resistant and chemical fungicides in the southwest Ethiopia. Assessment of ALS severity and associated agronomic factors was carried out in six districts during the 2022 and 2023 main cropping season. Pseudocercospora griseola isolates collected from the study areas were characterized based on morphological features and pathogenesity test conducted under greenhouse conditions