The Effect of Liquid Organic Fertilizer Dosage from Banana Pseudo-Stems on the Growth and Production of Bok Choy (Brassica rapa L.) Plants
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Abstract
Background: Bok choy (Brassica rapa L.) is a widely cultivated horticultural crop with high economic value. Increasing its production can be achieved through appropriate fertilization strategies. One alternative to chemical fertilizers is the use of liquid organic fertilizer (LOF) derived from banana pseudostems, which is expected to supply nutrients and improve plant growth in an environmentally friendly manner.
Aims: This study aimed to evaluate the effect of liquid organic fertilizer (LOF) derived from banana pseudostems on the growth and yield of bok choy.
Methods: The study was conducted from September to October 2024 at the Experimental Field of the Faculty of Agriculture, Muhammadiyah University of Jakarta. The experiment employed a Randomized Complete Block Design (RCBD) consisting of six treatments, namely P0 (NPK fertilizer at 1 g per plant) as the control, and P1, P2, P3, P4, and P5 which involved the application of liquid organic fertilizer (LOF) derived from banana pseudostems at doses of 100, 150, 200, 250, and 300 mL per plant, respectively. Each treatment was replicated four times, with each experimental unit comprising three plants, resulting in a total of 72 plants. Data was collected on plant height, number of leaves, leaf length, leaf width, root length, root weight, total fresh weight, and consumable fresh weight. The collected data were analyzed using analysis of variance (ANOVA), and when significant differences were detected, Duncan’s Multiple Range Test (DMRT) at the 5% significance level was applied to compare treatment means.
Result: The results indicated that the application of NPK fertilizer at 1 g/plant (control treatment) produced the best growth and yield performance across all observed variables compared to the liquid organic fertilizer treatments derived from banana pseudostems.
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