ARTICLE IN PRESS NITROGEN UPTAKE MODEL OF OIL PALM IN MAIN NURSERY ADINDA N H MANURUNG1,2*; SUWARTO3; SUDIRMAN YAHYA3 and BUDI NUGROHO4 DOI: https://doi.org/10.21894/jopr.2023.0052 | Published Online: 12 October 2023 FULL TEXT | DOWNLOAD PDF