Abstract

Mungbean is one of the most important pulse crops for protein supplement in subtropical zones of the world. The experiment was conducted at Adami Tulu, Lume and Dugda districts during 2020 and 2021 with the objective to determine economically beneficial and optimum NPS fertilizer rates on growth and yield of mung bean. The experiment was consisted of factorial combination of three mung bean varieties (Borda, Rasa (N-26) and Shoa Robit) and six fertilizer rates of (0, 50, 100, 150, 200 and 250 kg NPS ha-1) were laid out in factorial arrangement of randomized complete block design (RCBD) with three replications. Analysis of variance revealed that the combined main effects of days to flowering (DF), days to maturity (DM), plant height (PH), pod length (PL), number of pods per plant (NPP) were significant differences among varieties and days to maturity (DM) and number of pods per plant (NPP) were observed a significant differences among the fertilizers applications. The early DF (53.31 days) from Rasa, DM (94.51 days) from Rasa, the highest PH (40.60 cm) from Shoa Robit, PL (9.86 cm) from Rasa, NPP (24.32) from Shoa Robit were recorded among varieties as well as the early DM (94.26 days) from 100 kg NPS ha-1 and the highest NPP (25.12) from 250 kg NPS ha-1 were recorded among fertilizer applications. The results of economic analysis indicated that fertilizer applications of (50 kg NPS ha-1 with Borda, 50 kg NPS ha-1 with Shoa Robit, 150 kg NPS ha-1 with Borda variety) was obtained the maximum net benefit of (67454.1, 74720.7 and 117381.6 ETB ha) with marginal rate of return (524, 776 and 1497%) at Adami Tulu, Dugda and Lume respectively. Therefore, application of (50, 50 and 150 kg NPS ha-1) fertilizers at time of sowing with Borda, Shoa Robit and Borda variety at Adami Tulu, Dugda and Lume respectively was recommended to the mungbean growers in the study area.