Indonesian Journal of Oil Palm Research Volume 26 Number 1 Year 2018 is published by presenting articles, Increasing of red palm oil preferences with addition of vegetable oil or flavour and its stability in repeated frying, The growth of oil palm seedling with different plant media and watering Interval, Vegetative and bunch components of first pseudo-backcross of Elaeis Oleifera Brazil and Suriname origin in North Sumatra, Indonesia, Weed management with mixed herbicides (ammonium gluficinate 150 g/ l and methyl metsulfuron 5 g / l) on oil palm TBM, Leaching of N, P, K, and mg from application of briquette compound fertilizer, granular compound fertilizer, and single fertilizer.