RAHMAT SYARIF; VIOLITA VIOLITA; IRMA LEILANI EKA PUTRI; DEZI HANDAYANI. The Effect of Use Ground Coffee (Coffea arabica L.) as a addition Nutrition To The Growth of Spinach Plants (Amaranthus hybridus L.) In Hydroponics Systems. Prosiding Seminar Nasional Biologi, [S. l.], v. 1, n. 2, p. 1440–1449, 2022. DOI: 10.24036/prosemnasbio/vol1/262. Disponível em: https://semnas.biologi.fmipa.unp.ac.id/index.php/prosiding/article/view/262. Acesso em: 19 sep. 2024.