IBRAHIM, I. I. . Efficacy of Biochar and NPK Fertilizer on Soil Properties and Yield of Okra (Abelmeschus esculentus L.) in Guinea Savanna Region of Nigeria. Journal of Environmental Bioremediation and Toxicology, [S. l.], v. 5, n. 1, p. 6–10, 2022. DOI: 10.54987/jebat.v5i1.667. Disponível em: https://journal.hibiscuspublisher.com/index.php/JEBAT/article/view/667. Acesso em: 5 feb. 2026.