“Respons Pertumbuhan Dan Produksi Tanaman Jagung Manis Terhadap Aplikasi Biochar Dan Pupuk Organik Cair”. Jurnal Online Pertanian Tropik 5, no. 3 (December 3, 2019): 370–376. Accessed April 7, 2026. https://idjpcr.usu.ac.id/jpt/article/view/3102.