APRILIA, Radytha; MIFTAKHURROHMAT, A. Cultivation of Pakcoy Mustard (Brassica rapa L.) in a Hydroponic System in a Surabaya Vegetable Garden: Analysis of Plant Nitrogen Requirements: Budidaya Sawi Pakcoy (Brassica rapa L.) pada Sistem Hidroponik di Kebun Sayur Surabaya: Analisis Kebutuhan Nitrogen Tanaman. Procedia of Engineering and Life Science, [S. l.], v. 8, n. 2, 2026. DOI: 10.21070/pels.v8i2.2520. Disponível em: https://pels.umsida.ac.id/index.php/PELS/article/view/2520. Acesso em: 11 feb. 2026.