EffendiA., Gusmawartati and Rosnia 2023. Growth and production of upland rice (Oryza sativa L.) in ultisol using liquid organic fertilizer and NPK. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy). 51, 3 (Dec. 2023), 433-441. DOI:https://doi.org/10.24831/jai.v51i3.47352.