| dc.description.abstract | Oil palm (Elaeis guineensis Jacq.) is an important plantation crop in
Indonesia. The first step in oil palm cultivation is the nursery stage. In the main
nursery, both the quality and quantity of seedlings must be carefully and accurately
maintained. One of the efforts to improve seedling growth is the use of plant growth
regulators such as gibberellic acid and biochar, which can enhance the chemical,
physical, and biological properties of the soil. This study aimed to determine the
growth response of oil palm seedlings to the application of gibberellic acid and oil
palm shell biochar at the main nursery stage. The research was conducted at the
nursery of the Indonesian Oil Palm Research Institute (IOPRI) in the Aek Pancur
Unit Plantation, located in Tanjung Morawa Subdistrict, Deli Serdang Regency,
North Sumatra Province, from November 2024 to February 2025. This research
used Factorial Randomized Block Design (RBD) consisting of 2 treatment factors
with 3 replications. The first factor was gibberellic acid concentration (0; 75; 150;
225 ppm), and the second was oil palm shell biochar dosage (0; 75; 150; 225
g/polybag). The results showed that the application of gibberellic acid significantly
increased plant height, stem diameter, and number of fronds. The application of oil
palm shell biochar significantly increased plant height, stem diameter, leaf area,
root length, fresh weight, and dry weight of the seedlings. The interaction between
control gibberellic acid (G0) and 150 g/polybag biochar (B2) showed a significant
effect on the increase in plant height and stem diameter. | en_US |
