Effects of seedbed type, N fertilizer, and cultivar on the yield and N use efficiency of sorghum in semi-arid Ethiopia. (47). Tropical Agriculture, [S. l.], v. 84, n. 2, 2007. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/1141. Acesso em: 22 apr. 2025.