ADI, Defiyanto Djami; LUBIS, Iskandar; SUWARTO, Suwarto; SUGIYANTA, Sugiyanta. Determination of the Optimum Rates for N, P, and K Fertilizer for Upland Rice Variety “IPB 9G”. Journal of Tropical Crop Science, [S. l.], v. 6, n. 03, p. 164–173, 2019. DOI: 10.29244/jtcs.6.03.164-173. Disponível em: https://www.j-tropical-crops.com/index.php/agro/article/view/272. Acesso em: 22 feb. 2026.