1. Faculty of Agriculture and Environmental Sciences, Debre Tabor University, Debre Tabor, Ethiopia
2. Department of Natural Resource Management, Bahir Dar University, Bahir Dar, Ethiopia
3. Arid Land Research Center, Tottori University, Tottori, Japan
4. International Platform for Dryland Research and Education, Tottori University, Tottori, Japan
5. Soils Department, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil