ALASVAND, Poran; SHOKUHFAR, Alireza. Evaluation Effect of Different Levels of Zinc and Manganese Nano-Chelate on Quantitative and Qualitative Traits of Cowpea (Vigna unguiculata L.). Journal of Crop Nutrition Science, [S. l.], v. 3, n. 4, p. 1–13, 2017. Disponível em: https://oiccpress.com/jcns/article/view/5858. Acesso em: 28 apr. 2026.