Abstract
Phosphorus is the most important essential mineral nutrient which commonly restricts the growth and development of crops, associated with early maturity of crops, and for adequate grain production, energy transfer, photosynthesis, and nitrogen fixation. Field experiment was conducted during 2018-2020 at, Sidama Ethiopia to determine the yield response of haricot bean varieties to phosphorus fertilizer application. The treatment consisted of three haricot bean varieties (Hawassadume, Ibbado and Nasir) and five phosphorus levels (0, 10, 20, 30 and 40 kg Pha-1) and laid out in randomized complete block design in factorial combination with three replications. The study result revealed that the maximum grain yield of Hawassa dume (25.6 t ha-1), Ibbado (22.4 t ha-1) and Nasir (21.1t ha-1) were obtained from application of 40 kg P ha-1. Hawassa dume variety showed the best performance in all parameters followed by Nasir where and Ibado showed the least except in 1000 seed weight. The result of economic analysis revealed that all treatments were economically feasible as the net benefit values were greater than zero (NBV>0). Likewise, Hawassa dume was found to be the most productive cultivar for economical production in the study areas. Thus, based on the result obtained, it was possible to conclude that phosphorus fertilizer rate of 40kg P ha-1 was promising to enhance yield of haricot bean at Sidama, Ethiopia and similar areas which have the same soil property.
Highlights
Haricot bean (Phaseolus vulgaris L) is an important pulse crop in Ethiopia, and occupying about 366,877 t ha-1 and 19.69% of land area allocated to pulses and producing about 463,008 tons of grain 16.83% of the total pulses production [1]
Hawassa dume variety showed the best performance followed almost in all measured parameters followed by Nasir where as Ibbado showed the least except in 1000seed weight
To results suggested that all treatments were economically feasible as the net benefit values (NBV) were greater than zero (NBV>0)
Summary
Haricot bean (Phaseolus vulgaris L) is an important pulse crop in Ethiopia, and occupying about 366,877 t ha-1 and 19.69% of land area allocated to pulses and producing about 463,008 tons of grain 16.83% of the total pulses production [1]. The average yield 1.26 t ha–1 of common bean is low which is because phosphorus is deficient in about 70% of soils of Ethiopia [2]. Halvorson and Black, [6] reported that Phosphorus need to be available to the crop in balanced proportions to optimize crop yield and quality and efficiency of crop production. Some of researchers studied the adequate rates of phosphorus on yield and yield components of bean. Singh et al [8] indicated the maximum dry matter yield was attained at the 40 mg P kg-1 application rate. Gidago et al [9] indicated that seed yield and total biomass was significantly influenced by P application and the maximum values of these traits were obtained at the rate of 40 kg P ha-1. Fageria and De Carvalho [10] showed phosphorus application significantly increased
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