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Effect of Inoculating Bradyrhizobium on Phosphorus Use Efficiency and Nutrient Uptake of Soybean Intercropped with Sugarcane in Calcareous Soil of Metahara, Central Rift Valley, Ethiopia
ISSN: 2329-8863
Advances in Crop Science and Technology
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Effect of Inoculating Bradyrhizobium on Phosphorus Use Efficiency and Nutrient Uptake of Soybean Intercropped with Sugarcane in Calcareous Soil of Metahara, Central Rift Valley, Ethiopia

Tesfaye Fituma1*, Tamado Tana2 and Anteneh Argaw3

1Ethiopian Sugar Corporation, Research and Development Center, Wonji, Ethiopia

2School of Plant Sciences, Haramaya University, Ethiopia

3School of Natural Resources Management and Environmental Sciences, Haramaya University, Ethiopia

*Corresponding Author:
Tesfaye Fituma
Ethiopian Sugar Corporation
Research and Development Center
Wonji, PO Box 15, Ethiopia
Tel: +251912054213
E-mail: [email protected]

Received Date: June 25, 2017; Accepted Date: July 06, 2017; Published Date: July 13, 2017

Citation: Fituma T, Tana T, Argaw A (2017) Effect of Inoculating Bradyrhizobium on Phosphorus Use Efficiency and Nutrient Uptake of Soybean Intercropped with Sugarcane in Calcareous Soil of Metahara, Central Rift Valley, Ethiopia. Adv Crop Sci Tech 5: 290. doi: 10.4172/2329-8863.1000290

Copyright: © 2017 Fituma T, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Abstract

At a soil pH value of above 7.0, inorganic phosphorus (P) is highly susceptible to precipitation as insoluble form that is unavailable to the plants. Hence, a field experiment was conducted at Metahara Sugar Estate under irrigation during the 2014/15 cropping season to evaluate the effect of inoculating Bradyrhizobium on P uptake and P use efficiency of soybean intercropped with sugarcane. The treatments consisted of three levels of inoculation (Legumefix, SB6B1 and uninoculated) and four rates of P (0, 23, 46 and 69 kg P2O5 ha-1). The experiment was laid out as a randomized complete block design (RCBD) in a factorial arrangement and replicated three times. Analysis of the data indicated that Bradyrhizobium inoculation significantly increased plant N concentration and P uptake compared to the uninoculated treatment. But the effect of P rates and its interaction with inoculation was not significant on N concentration and P uptake but significantly increased total P uptake at the application of 69 kg P2O5 ha-1. P use efficiency indices were improved in response to inoculating the crop with Bradyrhizobium. The higher AE (13.6 kg kg-1), PRE (31.8%) and PUE (10.6 kg kg-1) were obtained by SB6B1 inoculation and higher PE (117.2 kg kg-1) and APE (161.7 kg kg-1) were obtained by Legumefix inoculation all at 23 kg P2O5 ha-1 except PE which recorded at 69 kg P2O5 ha-1. Thus, it can be concluded that SB6B1 isolate will be used as the best inoculant followed by Legumefix isolate with 23 kg P2O5 ha-1 of P fertilizer rate. However, strategies for increasing P use efficiency by adopting best management practices like co-inoculation of phosphate solubilizing microorganism or mycorrhiza with these Bradyrhizobium inoculants should be adopted to enhance P use efficiencies.

Retraction Note:

The article entitled “Effect of Inoculating Bradyrhizobium on Phosphorus Use Efficiency and Nutrient Uptake of Soybean Intercropped with Sugarcane in Calcareous Soil of Metahara, Central Rift Valley, Ethiopia” has been accepted for publication in the Advances in Crop Science and Technology considering the statements provided in the article as personal opinion of the author which was found not having any conflict or biasness towards anything. As the article was a perspective one, information provided by the author was considered as an opinion to be expressed through publication.

Soon after the publication of the paper, we witnessed some serious concerns and many of them argued that the paper is a personal perspective and had not discussed any relevant ethical issue considered under the journal scope. Moreover, the paper is neither innovative nor thought provoking.

Publisher took decision to make the article online solely based on the reviewers suggestion which considered the article not but a personal opinion of the author. However, it is found that the article has some unavoidable mistakes and issues, therefore, being retracted from the journal.

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