Ramadhan, N. ., W. P. Sari, D. Savitri, and E. O. Palja. “Growth Analysis of Three Soybean Varieties on Ultisol”. Andalasian International Journal of Agriculture and Natural Sciences (AIJANS), vol. 4, no. 02, Sept. 2023, pp. 148-53, doi:10.25077/aijans.v4.i02.148-153.2023.