Department of Plant Science, College of Agriculture and Environmental Science, Debre Berhan University, P.O. Box: 445 Debre Berhan, Ethiopia.
Department of Natural Resources Management and Environmental Sciences, College of Agriculture, Haramaya University, P.O. Box: 138, Dire Dawa, Ethiopia.
Crop research directorate, Debre Berhan Agricultural Research Centre, P.O. Box: 112, Debre Berhan, Ethiopia.
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