Matheus, Rupa, and Donatus Kantur. “Perbaikan Kualitas Kimia Vertisol Melalui Pemberian Bahan Organik Mucuna, Crotolaria, Dan Dosis Pupuk Hayati”. Jurnal Ilmu Pertanian Indonesia 27, no. 3 (July 15, 2022): 444–453. Accessed December 24, 2025. https://journal.ipb.ac.id/JIPI/article/view/40497.