Ende, Sjarifuddin. “Nitrogen Dynamics in the Corn-Soybean Intercropping Pattern Due to Applications Residue of Corn, Soybean and Biochar”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 55, no. 2 (February 12, 2021): 172–182. Accessed May 4, 2024. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/12241.