Kajian Serapan N dan Pertumbuhan Tanaman Kangkung Darat (Ipomoea Reptans Poir) yang Diberi Biochar Tempurung Kelapa dan Biourine. AGRI-SUSTAIN : Journal of Sustainable Agriculture, Food Systems, and Natural Resources, [S. l.], v. 1, n. 1, p. 28–35, 2026. Disponível em: https://jurnal.edutripper.com/index.php/agri-sustain/article/view/16. Acesso em: 8 oct. 2026.