Grain yield and yield components of single, double, and synthetic maize lines grown at four N levels in three ecological zones of West Africa. (51). Tropical Agriculture, [S. l.], v. 76, n. 1, 1999. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/1488.. Acesso em: 23 jul. 2024.