“Fertilizer Efficiency of Ammonium (NH4+) and Nitrate (NO3-) by Fertigation in Shallot Production”. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 53, no. 1 (April 14, 2025): 23–34. Accessed December 24, 2025. https://journal.ipb.ac.id/jurnalagronomi/article/view/58409.