Waluyo, S. H. Significance of Pelleting The Seed With Phosphate and Lime on The Cultivation of Soybean in Acid Soils in Sitiung, West Sumatera. J. Il. Tan. Lingk. 2005, 7 (2), 58-65. https://doi.org/10.29244/jitl.7.2.58-65.