Assessment of Major Foliar Diseases and Screening Common Bean (Phaseolus vulgaries L.) Genotypes Susceptibility to Angular Leaf Spot (Phaeoisariopsis griseola (Sacco.) Ferraris) in Borana Zone, Southern Ethiopia

Abstract

The cultivation and usage of common beans are widely practiced in Borana zone, where most farmers are agro-pastoralist and produce the crop mainly for home consumption and household income generation. However, its production and productivity are constrained by several factors. Among the factors, foliar diseases are the major biotic factor that affects bean productivity in the region. Hence, to provide a valuable input which contributes in solving this production constraint, the present study was conducted with the objectives of studying the relative importance of major foliar diseases of common bean; and further evaluates the significance of host resistance in the management of the angular leaf spot (ALS). The assessment was done in Yabello, Teltelle, and Elwaye districts in 2023. The districts were selected purposively based on the potential of bean cultivation. Accordingly, 4 kebeles were selected per district and the assessment was done at 4-7km intervals. A simple random sampling method was used to collect disease samples which were performed at 5 points in a W-shaped fashion per field with 1m 2 quadrat. The collected