RIZKI, Octavia Amalia; PARTOYO, Partoyo; NURSANTO, Edy; ILCHAM, Adi; SUPRIYANTA, Bambang. Coal Humic Acid and SP-36 Effects on Phosphorus Availability and Uptake by Pakcoy in Ultisol. RSF Conference Series: Engineering and Technology, [S. l.], v. 5, n. 1, p. 538–546, 2026. DOI: 10.31098/cset.v5i1.1218. Disponível em: https://proceeding.researchsynergypress.com/index.php/cset/article/view/1218. Acesso em: 16 oct. 2026.