M. B, Adamu; U.G, Junaidu. Effect of biochar and supplementary application of micronutrient on soil and growth of okra in Lafia, Nigeria. International Journal of Environment, Agriculture and Biotechnology, [S. l.], v. 6, n. 1, 2021. Disponível em: https://journal-repository.com/index.php/ijeab/article/view/3002.. Acesso em: 2 may. 2025.