Optimization of nitrogen rate and application time on grain yield and protein content of durum wheat (Triticum turgidum spp. durum) in Yilmana Densa district of northwest Ethiopia. - Shibabaw, Agegnehu; Derebe, Bitwoded; Mengie, Yechale; Beshir, Oumer; Getahun, Wudu; Assefa, Alemayehu (Discover Agriculture, 2026)