Akpan, M., Afu, S., & Olim, D. (2026). SPATIAL VARIABILITY OF SOIL pH AND CEC USING PREDICTIVE MODELS IN THE MOUNTAINOUS REGION OF OBANLIKU, CROSS RIVER STATE, NIGERIA. Journal Of Agriculture, Forestry & Environment , 10(1), 77-96. https://jafe.net.ng/index.php/home/article/view/304