Sainam Udpuay และ Chattanaporn Kueanoon; Nutchanart Tanwan; Nichakarn Thuenprom. (2022) Effect of Potash Fertilizer on Growth and Yield of Maize (Zea mays L.) in Clay Loam Soil. <i>Thai Agricultural Research Journal</i>, <i>40</i>(3), 307-320.Sainam Udpuay และ Chattanaporn Kueanoon; Nutchanart Tanwan; Nichakarn Thuenprom. "Effect of Potash Fertilizer on Growth and Yield of Maize (Zea mays L.) in Clay Loam Soil". Thai Agricultural Research Journal 40 (2022):307-320.Sainam Udpuay และ Chattanaporn Kueanoon; Nutchanart Tanwan; Nichakarn Thuenprom. Effect of Potash Fertilizer on Growth and Yield of Maize (Zea mays L.) in Clay Loam Soil. Department of Agriculture:ม.ป.ท. 2022.