Abstract
Fifteen common bean genotypes were tested at four locations with two management regimes of lime treated and lime untreated acidic soils. The experiment was laid out in split plot design with three replications during 2016/17 cropping season. The combined analysis of variance over environments showed significant differences among environments, genotypes, genotype x environment interaction (GEI), management, genotype by management interaction (G x M) and genotype by environment by management interaction (G x E x M) on seed yield. Analysis of variance for seed yield from AMMI model indicated that contribution of the IPCA 1 and IPCA 2 accounted for 53.37 and 25.04%, respectively for lime treated soils and 72.89 and 18.30% respectively for lime untreated soils of the observed variation due to GEI. The result indicated environment contributed much to the observed variations suggesting the need to test common bean genotypes at diverse environments. Two genotypes, ALB 212 (1.65 t/ha) and BFS 39 (1.63 t/ha) had first and second highest yield, identified as responsive to both environments but more to favorable environments suggesting the need for further test to develop as varieties. It could be possible to recommend genotypes ALB 179, ALB 207, ALB 209, BFS 35, BFS 39 and ALB 212 to be tested as National Variety trial for all environments with both management measures as they have wider adaptability. Key words: Additive main effect and multiplicative interaction (AMMI), common bean, genotype x environment interaction (GEI), split plot.  
Highlights
Common bean (Phaseolus vulagris L), locally known as „Boleqe‟ known as dry bean and haricot bean, is a very important legume crop grown worldwide and it is one of the most important and widely cultivated species of Phaseolus in Ethiopia
Fifteen common bean genotypes (Table 2), which had been selected based on their background on adaptability to low soil fertility and acid soil were obtained from Melkassa Agricultural Research Center (MARC), Lowland Pulse Research program and were evaluated at the selected sites
Analysis of variance for each location revealed the presence of highly significant (P≤0.01) difference in seed yield among common bean genotypes tested at Assosa, Bambasi, Mandi and Nedjo (Appendix Table 1)
Summary
Common bean (Phaseolus vulagris L), locally known as „Boleqe‟ known as dry bean and haricot bean, is a very important legume crop grown worldwide and it is one of the most important and widely cultivated species of Phaseolus in Ethiopia. It is grown predominantly under smallholder producers as an important food crop and source of cash. Common bean is the Ethiopia‟s most important grain legume for direct human consumption with 513,725 tons of dry beans harvested from 323,318 ha in Ethiopia (CSA, 2015).
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