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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.
Metadel Minaye Getahun1, Zeleke Eromo Ewunetu2, Kindu Kebede Gebre*3, Zelalem Abera Amare4, Tarekegn Keriso Menisho5
1Arba Minch Agricultural Research Center, Southern Agricultural Research Institute, Hawassa, Ethiopia.
Email: siketmeta21@gmail.com ǀ ORCID: https://orcid.org/0000-0001-7209-4542
2Arba Minch Agricultural Research Center, Southern Agricultural Research Institute, Hawassa, Ethiopia.
Email: dreamyzed2005@gmail.com ǀ ORCID: https://orcid.org/ 0000-0002-5452-3179
3Department of Statistics, College of Computing and Informatics, Haramaya University, Dire Dawa, Ethiopia.
Email: m7.kebede@gmail.com ǀ ORCID: https://orcid.org/0000-0002-5337-4343
4University Laboratory Management Directorate Office, Central Laboratory, Haramaya University, Dire Dawa, Ethiopia. Email: aberazelalem2@gmail.com ǀ ORCID: https://orcid.org/0000-0002-6017-2352
5Arba Minch Agricultural Research Center, Southern Agricultural Research Institute, Hawassa, Ethiopia.
Email: yedideya04@gmail.com ǀ ORCID: https://orcid.org/0000-0002-7099-2020
*Corresponding author
Grassroots Journal of Natural Resources, 5(2): 1-11. Doi: https://doi.org/10.33002/nr2581.6853.050201
Received: 11 January 2022
Reviewed: 16 February 2022
Provisionally Accepted: 29 March 2022
Revised: 30 April 2022
Finally Accepted: 17 May 2022
Published: 27 June 2022
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Potato is important for food security in developing countries such as Ethiopia. The purpose of this study is to evaluate the contribution of varied fertilizers to potato yields at Basketo Special Woreda, Gamogofa Zone, Ethiopia. To attain this objective, a generalized linear mixed model was used to differentiate the factors that affect the marketable yield of potatoes by considering variability within three replications. In addition, this study used the Kolmogorov-Smirnov test to check the goodness of fit tests of normal distribution. The collected data were analyzed using statistical software, SAS version 9.4. The mean of plant tallness, number of plants per plot, number of plants per slope, and number of tubers per slope were 73.65 (SD = 12.2), 155.2 (SD = 112.2), 3.23 (SD = 1.31), and 10.91 (SD = 3.15.2), respectively. The result reveals that 6% of variation existed in potato yield between plots, and the remaining 94% existed within plots. Apart from a linear mixed model, a random intercept model was applied to this data. The findings reveal that fertilizer types, number of plants per plot, and numbers of tubers per hill were significant at 5% level of significant. Thus, the expected marketable yield of potatoes decreased by 0.7819 tons/hectare when the number of tubers per hill increased by 1 unit. On the other hand, the expected marketable yield of potatoes has increased by 0.0175 tons/hectare when the number of plants per plot increased by 1 unit.
Marketable yield; Potato; Fertilizer types; Random Intercept Model; Ethiopia
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Getahun, M.M., Ewunetu, Z.E., Gebre, K.K., Amare, Z.A. and Menisho, T.K. (2022). Modelling of the Contribution of Different Blended Fertilizers to Potato Production in Basketo Special Woreda, Gamo-gofa Zone, Ethiopia. Grassroots Journal of Natural Resources, 5(2): 1-11. Doi: https://doi.org/10.33002/nr2581.6853.050201
Getahun, M. M., Ewunetu, Z. E., Gebre, K. K., Amare, Z. A., & Menisho, T. K. (2022). Modelling of the Contribution of Different Blended Fertilizers to Potato Production in Basketo Special Woreda, Gamo-gofa Zone, Ethiopia. Grassroots Journal of Natural Resources, 5(2), 1-11. https://doi.org/10.33002/nr2581.6853.050201
Getahun M. M., Ewunetu Z. E., Gebre K. K., Amare Z. A., Menisho T. K. Modelling of the Contribution of Different Blended Fertilizers to Potato Production in Basketo Special Woreda, Gamo-gofa Zone, Ethiopia. Grassroots Journal of Natural Resources, 2022, 5 (2), 1-11. https://doi.org/10.33002/nr2581.6853.050201
Getahun, Metadel Minaye, Ewunetu, Zeleke Eromo, Gebre, Kindu Kebede, Amare, Zelalem Abera, Menisho, Tarekegn Keriso. 2022. “Modelling of the Contribution of Different Blended Fertilizers to Potato Production in Basketo Special Woreda, Gamo-gofa Zone, Ethiopia”. Grassroots Journal of Natural Resources, 5 no. 2: 1-11. https://doi.org/10.33002/nr2581.6853.050201
Getahun, Metadel Minaye, Zeleke Eromo Ewunetu, Kindu Kebede Gebre, Zelalem Abera Amare and Tarekegn Keriso Menisho. 2022. “Modelling of the Contribution of Different Blended Fertilizers to Potato Production in Basketo Special Woreda, Gamo-gofa Zone, Ethiopia”. Grassroots Journal of Natural Resources, 5 (2): 1-11. https://doi.org/10.33002/nr2581.6853.050201
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