Parametric and Optimization Studies on the entrapment of Potassium Fertilizer into Chitosan-Poly(methacrylic acid) Carrier via Ionic GelationDiana Jane M. Plofino, Clint Charles P. Brutas, Catalino G. Alfafara, Monet Concepcion Maguyon-Detras and Veronica P. MigoMATEC Web Conf., 268 (2019) 06009DOI: https://doi.org/10.1051/matecconf/201926806009