Abstract
This research aims to determine the response of oil palm seedling growth in pre-nursery on acid soil to NPK fertilizer doses (15-15-15) and dolomite doses. The research was carried out at Educational and Research Garden of Stiper Agricultural Institute located in Maguwoharjo Village, Depok District, Sleman Regency, Yogyakarta, Indonesia from January to April 2023. This research used a factorial pattern experimental method which was prepared using a Completely Randomized Design (CRD) consisting of two factors. The first factor was the dosage of NPK (15-15-15) fertilizer which consists of 0 g ( control) ; 2.5 g; 3 g and 3.5 g. Meanwhile, the second factor was the dose of dolomite fertilizer which consists of 0 g (control); 5 g; 10 g and 15 g. Each treatment was carried out in 5 repetitions. The number of seeds needed for this experiment is 4 x 4 x 5 = 80 seeds. The results showed that there was no signiticant interaction between the dosage of NPK fertilizer (15-15-15) and dolomite on all parameters. The dose of NPK fertilizer has an influence on the dry weight of the roots and the best at a dose of 3.5 g. Dolomite application has an influence on root fresh weight and leaf area with the best dose of 10 g/oil palm seedling in pre-nursery on acid soil.
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