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Coordinated and published by The Grassroots Institute, the Grassroots Journal of Natural Resources (GJNR) is an international journal dedicated to the latest advancements in natural resources throughout the world. The goal of this journal is to provide a platform for scientists, social scientists, policy analysts, managers and practitioners (on all academic and professional levels) all over the world to promote, discuss and share various new issues and developments in different arenas of natural resources.
Zelalem Abera Amare*1, Kassa Baye Ketema2, Kindu Kebede Gebre3, Yenenesh Demissie Weldesenbet4
1Central Laboratory, University Laboratory Management Directorate Office, Haramaya University, P.O. Box 138, Dire Dawa, Ethiopia. Email: aberazelalem2@gmail.com ǀ ORCID: https://orcid.org/0000-0002-6017-2352
2School of Biological Science and Biotechnology, Haramaya University, P.O. Box 138, Dire Dawa, Ethiopia.
Email: kassa033@gmail.com ǀ ORCID: https://orcid.org/0000-0003-1941-613X
3Department of Statistics, Haramaya University, P.O. Box 138, Dire Dawa, Ethiopia.
Email: m7.kebede@gmail.com ǀ ORCID: https://orcid.org/0000-0002-5337-4343
4Central Laboratory, University Laboratory Management Directorate Office, Haramaya University, P.O. Box 138, Dire Dawa, Ethiopia. Email: yeneneshdemisie@gmail.com ǀ ORCID: https://orcid.org/000-0002-2128-7333
*Corresponding author
Grassroots Journal of Natural Resources, 5(2): 127-137. Doi: https://doi.org/10.33002/nr2581.6853.050208
Received: 04 April 2022
Reviewed: 23 April 2022
Provisionally Accepted: 30 April 2022
Revised: 19 May 2022
Finally Accepted: 29 May 2022
Published: 30 June 2022
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Phosphorus is the second most important nutrient for plant growth, but its availability is very low in the soil. This study was designed to identify phosphate-solubilizing Rhizobia from rhizosphere soil in Gorogutu and Deder districts of Ethiopia. The study evaluates the effects of phosphate-solubilizing Rhizobia on Teff (Eragrostis teff) growth under greenhouse conditions. The greenhouse experiment was assembled in a completely randomized design with 5 treatments including the control with three replications. A total of 30 Rhizobia isolates were obtained from rhizosphere soils in two districts (Gorogutu, and Deder) and screened for phosphate solubilization using Pikovskaya’s Agar. Based on their phosphate solubilization indices, 4 potential isolates (PS-6, PS-22, PS-27, and PS-30) were selected for further study in the greenhouse. Phosphate solubilizing isolates in pot experiment under greenhouse were applied at a rate of 0.5 g per pot and Teff disinfected seeds were suspended in 30 ml thick cell suspension of phosphate solubilizing Rhizobia (1012 cells/ml) in the presence of 0.5% peptone (antidiuretic hormone for 30 minutes), but not the control. The result showed that almost all inoculants, after 30- and 90-days inoculation, have significantly improved the growth parameters of Teff (Eragrostis teff) under greenhouse conditions. Moreover, all the isolates showed a positive impact on all the growth parameters. The results from this experiment are useful in Ethiopia for biofertilizer development and for teff growth under organic farming systems. Therefore, isolates PS-6 and PS-22 are highly recommended to be prospective commercial biofertilizers at field conditions in different teff agroecologies.
Teff; Phosphate rock; Phosphate Solubilizing Rhizobia; Biofertilizer
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Amare, Z.A., Ketema, K.B., Gebre, K.K. and Weldesenbet, Y.D. (2022). Effects of Phosphate Solubilizing Rhizobia on the Growth of Teff (Eragrostis teff) under Greenhouse Conditions in Ethiopia. Grassroots Journal of Natural Resources, 5(2): 127-137. Doi: https://doi.org/10.33002/nr2581.6853.050208
Amare, Z. A., Ketema, K. B., Gebre, K. K., & Weldesenbet, Y. D. (2022). Effects of Phosphate Solubilizing Rhizobia on the Growth of Teff (Eragrostis teff) under Greenhouse Conditions in Ethiopia. Grassroots Journal of Natural Resources, 5(2), 127-137. https://doi.org/10.33002/nr2581.6853.050208
Amare Z.A., Ketema K.B., Gebre K.K., Weldesenbet Y.D. Effects of Phosphate Solubilizing Rhizobia on the Growth of Teff (Eragrostis teff) under Greenhouse Conditions in Ethiopia. Grassroots Journal of Natural Resources, 2022, 5 (2), 127-137. https://doi.org/10.33002/nr2581.6853.050208
Amare, Zelalem Abera, Ketema, Kassa Baye, Gebre, Kindu Kebede, Weldesenbet, Yenenesh Demissie. 2022. “Effects of Phosphate Solubilizing Rhizobia on the Growth of Teff (Eragrostis teff) under Greenhouse Conditions in Ethiopia”. Grassroots Journal of Natural Resources, 5 no. 2: 127-137. https://doi.org/10.33002/nr2581.6853.050208
Amare, Zelalem Abera, Kassa Baye Ketema, Kindu Kebede Gebre and Yenenesh Demissie Weldesenbet. 2022. “Effects of Phosphate Solubilizing Rhizobia on the Growth of Teff (Eragrostis teff) under Greenhouse Conditions in Ethiopia”. Grassroots Journal of Natural Resources, 5 (2): 127-137. https://doi.org/10.33002/nr2581.6853.050208
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