Taiwo, A., et al. “Kinetics of Potassium Release and Fixation in Some Soils of Ogun State,Southwestern, Nigeria As Influenced by Organic Manure”. International Journal of Recycling of Organic Waste in Agriculture, vol. 7, no. 3, July 2018, https://doi.org/10.1007/s40093-018-0211-0.