Effect of planting date in productivity of Nigella sativa L. and quality of essential oil extracted from them in the south of Hama area. Damascus University Journal of agriculture sciences, [S. l.], v. 40, n. 1, 2024. Disponível em: https://journal.damascusuniversity.edu.sy/index.php/agrj/article/view/1711. Acesso em: 18 jun. 2026.