The Effect of LOF Concentration in AB MIX on the Growth of Oil Palm Seedlings (Elaeis quineensis Jacq) Wick System
Abstract
Conventional oil palm nursery systems face significant challenges, including limited nutrient availability, land dependency, and pest infestations, which drive the adoption of hydroponic systems as a sustainable alternative. This study evaluated the effect of liquid organic fertilizer (LOF) derived from goat manure and straw waste on the growth of pre-nursery oil palm seedlings (Elaeis guineensis) using a wick hydroponic system. While standard hydroponic systems typically use water-soluble inorganic fertilizers like AB Mix, which provide complete macro- and micronutrients readily available to plants, this study investigated LOF as a sustainable alternative that aligns with organic agriculture principles. The experiment was conducted in a greenhouse over three months using a non-factorial completely randomized design (CRD) with seven treatments and three replications. Treatments included AB Mix (control) and mixtures of AB Mix with goat manure LOF or straw waste LOF at concentrations of 400, 800, and 1,200 ppm. Observed variables included plant height, leaf count, stem diameter, and leaf width. Results indicated that the AB Mix treatment alone yielded superior vegetative growth compared to treatments supplemented with goat manure or straw waste LOF. These findings suggest that while AB Mix remains more effective for supporting oil palm seedling growth in the pre-nursery phase, LOF holds potential as a supplementary nutrient in hydroponic systems with optimized formulations and concentrations. This research provides a foundational basis for developing more efficient and sustainable oil palm nursery technologies.
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