Effect of irrigation method and spacing on yield and water productivity of maize (Zea mays L.) in Lake Tana Basin, Ethiopia. - Tewabe, Dires; Abebe, Atakltie; Enyew, Alebachew; Tsige, Amare; Worku, Mulugeta; Ayalew, Aragew; Derebe, Bitwoded; Ewenetu, Wasihun; Amare, Tadele (Discover Environment, 2025)