<![CDATA[Shallot (Allium cepa L.) is one of the most important horticultural commodities, playing a significant role in human life and being widely cultivated in Indonesia. One approach to improving the growth and yield of shallot plants is the application of liquid organic fertilizer during cultivation. This study aimed to determine the effect of HENS Liquid Organic Fertilizer (HENS LOF) concentrations on the growth and yield of shallots and to identify the most effective concentration for enhancing their growth and productivity. The research was conducted at the Lebak Bulus Tissue Culture Laboratory from July to December 2024. The experiment employed a Randomized Complete Block Design (RCBD) with a single factor, namely the concentration of HENS Liquid Organic Fertilizer, consisting of five treatments: P0 = 0 mL/L, P1 = 10 mL/L, P2 = 20 mL/L, P3 = 30 mL/L, and P4 = 40 mL/L. Each treatment was replicated five times, resulting in a total of 25 experimental units. The observed variables included plant height, number of leaves, number of bulbs, bulb diameter, fresh plant weight, and dry plant weight. The results showed that HENS Liquid Organic Fertilizer concentration significantly affected plant height, number of leaves, number of bulbs, bulb diameter, fresh plant weight, and dry plant weight. The application of HENS Liquid Organic Fertilizer at a concentration of 40 mL/L produced the best growth and yield, with a plant height of 41.9 cm, 22.5 leaves per plant, 7.8 bulbs per clump, a bulb diameter of 21.6 mm, a fresh plant weight of 37.9 g, and a dry plant weight of 28.9 g]]>
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