The purpose of the study was to determine the good dose of calcium (dolomite origin) to increase the growth and yield of oil palm aged 15 years of the Marihat variety. This research was carried out from February to June in the oil palm research station (-3°13'14.5", 104°38'25.6") of Faculty of Agriculture, Sriwijaya University. The study was designed in Randomized Block Design (RBD) with 6 tr…