Open Access Research Paper Views (1307) Calcium carbonate forms applied to purple sweet corn in Capiz Philippines Jun Art M. Casumlong, Snowie Jane C. Galgo Int. J. Biosci. 17(3), 201-205, September 2020. DOI: http://dx.doi.org/10.12692/ijb/17.3.201-205 Keywords: Calcium carbonate, Eggshell, Lime, Oyster shell, Purple sweet corn Details