Effect of nitrogen fertilizer levels on fresh leaf yield of spider plant (Cleome gynandra) in Western Kenya. International Journal of Manures and Fertilizers, [S. l.], v. 1, n. 1, p. 239–243, 2012. Disponível em: https://ijpp.org/journal/index.php/ijmf/article/view/260. Acesso em: 23 mar. 2026.