Setiowati, R.D., Sri Wening, Nuringtyas, T.R., Rahayu, M.S. and Sudarsono, S. 2025. Identification of metabolites for biomarker of nitrogen and potassium use efficiency in oil palm. Menara Perkebunan. 93, 1 (Jul. 2025), 74–82. DOI:https://doi.org/10.22302/iribb.jur.mp.v93i1.631.