F. O, U. ., O. A, E. ., C. J, I. ., & A. E, S. (2021). Determination of Phosphorous Fixation Capacity on Alluvium, Sandstone and Shale Soils of Akwa Ibom State, Nigeria. International Journal of Sustainable Agricultural Research, 8(2), 105–113. https://doi.org/10.18488/journal.70.2021.82.105.113