Differential Response of Common bean (Phaseolus vulgaris L.)Varieties to Mixed NPS Fertilizer Rates: An Analysis of Growth and Yield

Abstract The common bean (Phaseolus vulgaris L.) is a staple crop in Ethiopia, valued for its quick maturation and economic benefits. This study investigates the impact of varying NPS fertilizer rates on the growth, yield, and yield-related traits of three common bean varieties (Babile, Fadis, and Tinike). The experiment employed a randomized full block design with three replicates, testing five NPS fertilizer rates (0, 50, 100, 150, and 200 kg ha1).The Fadis variety, with an application of 150 kg ha-1 of NPS, demonstrated superior performance, yielding the highest number of pods per plant (25.33), grain yield (2565 kg ha-1), and yield index (41.30). This combination also resulted in the highest agronomic efficiency (5.6 kg per kg of NPS seed) and a maximum net benefit of 53,454 ETB ha-1, with a marginal efficiency of 850.5%. These findings suggest that the Fadis variety with 150 kg NPS ha1 application could enhance common bean productivity in the region. However, broader studies are recommended for a more comprehensive understanding.