i Regional Review Workshop on Completed Research Activities Proceedings of Review Workshop on Completed Research Activities of Natural Resource Research Directorate held at Oromia Agricultural Research Institute (IQQO), 30 October - 03 November 2023, IQQO HQs Finfinne, Ethiopia Editors: Kefyalew Assefa, Kasahun Kitila, Tilahun Abera, Abera Donis, Mulugeta Eshete, Bikila Mengistu, Mezgebu Senbeto , Zeleke Asaye, Ayub Jalde, Getachew Haile and Tilahun Cibsa Oromia Agricultural Research Institute P.O.Box 81265 Finfinnee, Ethiopia