Relationship Pattern of Nutrient Content in Leaves, Rachis, Stalk, Spikelet, and Mesocarp to Oil Content of Fresh Fruit Bunches of 3 Varieties (Socfindo, Topaz, Damimas) of Oil Palm Plants in Mineral Soils of Central Kalimantan

Abstract

The potential oil content in oil palm plants is influenced by genetic and environmental factors. Several factors affect the quality of palm oil, including variety and nutrition, such as macro nutrients, especially N, P, K, and Mg. These nutrients play a role in fruit formation, increase in average weight bunches (BJR), plant health and play a role in increasing oil content. This study aims to the relationship of leaf, stalk, spikelet, and mesocarp nutrients to oil content. This exploratory study uses a quantitative descriptive method on 3 varieties of DxP Oil Palm: Socfindo, Topaz and Damimas: with year of planting 2014, each covering an area of ± 10 Ha and the observation period 2018-2019. The results showed that there was a relationship between leaf K nutrient on the Damimas variety, leaf Ca nutrient on the Socfindo variety and leaf B, leaf Zn, K rachis and Mg rachis nutrient on the Topaz variety to the O/B value. The regression model for this relationship sequentially is Y = 13.68 + 10.97 K_ leaf (R2 = 0.336); Y = 14,917 + 13,915 Ca_leaf (R2 = 0.314); and Y = 39.645 - 0.519 B_ leaf + 0.728 Zn_ leaf - 9.519 K_rachis - 41.434 Mg_rachis (R2 =0.595). In addition, only the Socfindo variety found an effect of stalk and spikelet nutrient content on the O/B value. These nutrients are K stalk nutrients with the regression model Y = 0.42 + 6.29 K_stalk (R2 = 0.372), and P, K, Mg and Ca spikelet nutrients with the regression model Y = 6.851 - 233.372 P_Spikelet + 14.585 K_Spikelet + 141.326 Mg_Spikelet - 66.348 Ca_Spikelet (R2 = 0.635).