Influence of blended NPSB fertilizer on nodulation and yield performance of <i>Rhizobium</i> inoculated common bean varieties in acidic soil, western Ethiopia

The decline of soil fertility and limited adaptive cultivars are some the factors that affect crop production. This study aimed to examine response Rhizobium inoculated common bean varieties NPSB fertilizer application for nodulation, yield, yield related traits. Three (Local, Loko, Nasir) were combined with four rates blended (0, 50, 100, 150 kg ha−1) fertilizers in randomized complete block design three replications arranged factorially. result revealed significantly highest number total nodules (53.7), effective per plant (35.54), pods (7.4), stand count (87%), biomass (17.5 t ha1), seed (2996 harvest index (16.67%) recorded at rate 100 ha−1 which was 183%, 60%, 100%, 19%, 56%, 112%, 33.3% increment over control, respectively. Nodules fresh weight dry showed 188% 344.8% improvement Nassir variety higher nodulation while Loko had long rooting has implication on nitrogen fixation nutrition. Thus, suggests achieved from Nasir combination producing net benefit 79,245.78 ETB (Ethiopian Birr).