F., A., T.B., H. and M.K.C., S. 2017. Potassium Recovery Potential of Selected Agroforestry and Organic Wastes in Ibadan, Nigeria. European Scientific Journal, ESJ. 13, 6 (Feb. 2017), 492. DOI:https://doi.org/10.19044/esj.2017.v13n6p492.