Hasnelly, -, Syafrimen Yasin, - Agustian, and - Darmawan. “Combination of Liquid Organic and Chemical Fertilizer on Corn and Soybean Using Intercropping in Ultisols”. International Journal on Advanced Science, Engineering and Information Technology 13, no. 5 (October 31, 2023): 1763–1771. Accessed June 3, 2024. http://ijaseit.insightsociety.org/index.php/ijaseit/article/view/19149.