Phosphorus Fertilizer Effects on Haricot Bean ( Phaseolus vulgaris L.) Varieties on Andisols of Sidama, Ethiopia

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.