ISSN: 2474-8846
Authors: Geletu T and Mekonnen F
The wide use of mungbean (Vigna radiate) as food crops forages and green manure is mainly associated with their ability to establish symbiotic association with root nodulating rhizobia. The field experiment was conducted at Kemisie Zone Dawachefa district, Ethiopian in 2017 was designed to study the effect of different levels of bio fertilizers and phosphorus on yield, nutrient uptake and economics of mungbean varieties for improving the overall productivity of the crop. The experiment was laid out with split plot design with three replications. Three levels of Rhizobium inoculation rates (0, 400g and 500g) and three level of phosphorus (0, 23 and 46 kg P2O5 ha-1) as the sub-plot factor and two different varieties as main plot, thereby, making eighteen treatment combinations. The result showed that Rhizobium and phosphorous had significant (p < 0.05) effect on morphological and phonological traits. An increase in the rate of application of Rhizobium and phosphorous linearly increase agronomic, yield and yield component traits. The maximum seed yield (1808 kg ha-1) was obtained when we apply 500g Rhizobium inoculants and 0 kg P2O5 ha-1. Thus the application of Rhizobium inoculants at 500g alone or Rhizobium inoculants 500g combined with phosphorus application at the rate of 23 kg P2O5 ha-1 were economically optimum level for harvesting the highest yield of mungbean for the region. Despite significant increases observed in yield, nutrient uptake, economic response to the recommended rates of bio fertilizer, future studies should focus on multi-locations and seasons to arrive at conclusive results.
Keywords: Nodule; Rhizobium; Nitrogen Uptake; Nutrient Uptake
