Saowakon Hemwong และ Chonphicha Kalasuk. (2026) Utilization of biochar as a carrier material for developing slow-release nitrogen fertilizer. <i>Khon Kaen Agriculture Journal</i>, <i>54</i>(4), 880-892.Saowakon Hemwong และ Chonphicha Kalasuk. "Utilization of biochar as a carrier material for developing slow-release nitrogen fertilizer". Khon Kaen Agriculture Journal 54 (2026):880-892.Saowakon Hemwong และ Chonphicha Kalasuk. Utilization of biochar as a carrier material for developing slow-release nitrogen fertilizer. Faculty of Agriculture:ม.ป.ท. 2026.