Ibrahim II. Efficacy of Biochar and NPK Fertilizer on Soil Properties and Yield of Okra (Abelmeschus esculentus L.) in Guinea Savanna Region of Nigeria. J Environ Bioremed Toxicol [Internet]. 2022 Jul. 31 [cited 2025 Apr. 20];5(1):6-10. Available from: https://journal.hibiscuspublisher.com/index.php/JEBAT/article/view/667