PRANATA, A. J.; SIMANJUNTAK, B. H. The Effect of Using Leonardite Mainic Acid as Urea Coater on The Growth And Yield Of Corn (Zea mays). Gontor Agrotech Science Journal, [S. l.], v. 6, n. 1, p. 17–33, 2020. DOI: 10.21111/agrotech.v6i1.3593. Disponível em: https://ejournal.unida.gontor.ac.id/index.php/agrotech/article/view/3593. Acesso em: 5 jul. 2024.