Pimolsiri Supasatienchai, Jongruk Chanchareonsook, and Ed Sarobol. “Utilization of Slop Ash as a Source of Potassium for Corn Grown on the Pakchong Soil Series”. Agriculture and Natural Resources 44, no. 1 (February 28, 2010): 17–23. accessed October 10, 2026. https://li01.tci-thaijo.org/index.php/anres/article/view/244876.