Usanga IA, Udofia UE, Osu, SR. Examination of Radiocarbon Levels, Organic Matter, Phosphorus, and Potassium in Acidic Soils under Maize Cultivation in Akwa Ibom State, Nigeria. JOSEH [Internet]. 2025 Feb. 16 [cited 2026 May 12];8(1). Available from: https://akscoejoseh.org.ng/index.php/joseh/article/view/5