Pakcoy (Brassica rapa L.) is one of the vegetables favored by the community because it has high nutritional content. The fluctuating production of pakcoy crops each year shows that there is a need to develop pakcoy cultivation to meet the needs of the Indonesian people due to population growth and high nutritional requirements. Therefore, improvements in cultivation techniques are needed to increase pakcoy productivity through good cultivation techniques, including the use of a combination of organic and anorganic fertilizers. The aim of this research was to determine and obtain the best combination of NPK fertilizer and kascing fertilizer on the highest growth and yield of pakcoy. This research was conducted in Pangaritan Pagadungan Village, Tempuran Sub-District, Karawang District, from February 2025 to April 2025 using a single factor Randomized Block Design (RBD) experimental method. It consisted of 6 treatments, namely A (1.4 g NPK), B (1.2 g NPK and 20 g kascing), C (1.2 g NPK and 40 g kascing), D (1 g NPK and 60 g kascing), E (1 g NPK and 80 g kascing), and F (0.8 g NPK and 100 g kascing) with 4 replicates. The observation data were analyzed using analysis of variance and further tested using the Duncan Multiple Range Test (DMRT) at the 5% level. The results of this experiment showed there was not significantly effect on plant height, number of leaves, leaf area, and fresh weight of pakcoy plants. The results of the research showed that the average plant height at 21 days after planting (16,32 cm), number of leaves 21 days after planting (6,13 strands), leaf area (395,49 cm2), and daily weight of pakcoy plants (31,88 g).

Keywords: Pakcoy, NPK, kascing feztilizer

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