Pimolsiri Supasatienchai, Jongruk Chanchareonsook and Ed Sarobol (2010) “Utilization of Slop Ash as a Source of Potassium for Corn Grown on the Pakchong Soil Series”, Agriculture and Natural Resources. Bangkok, Thailand, 44(1), pp. 17–23. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/244876 (accessed: 9 October 2026).