Synergistic Effects of Coconut Husk Biochar and Palm Fiber on Soil Nitrogen and Phosphorus Dynamics and Pak Choi (Brassica rapa,subsp. chinensis) Nutrient Uptake . Libyan Open University Journal of Applied Sciences (LOUJAS), [S. l.], v. 2, n. 1, p. 520–529, 2026. DOI: 10.65422/loujas.v2i1.306. Disponível em: https://oujournals.ly/index.php/LOUJAS/article/view/306. Acesso em: 24 jun. 2026.