Rinaldi, Aan, Dermiyati Dermiyati, Rianida Taisa, and Afandi Afandi. “PENGARUH PEMBERIAN KOMBINASI PUPUK ORGANONITROFOS DAN PUPUK KIMIA DENGAN PENAMBAHAN BIOCHAR TERHADAP KEMANTAPAN AGREGAT TANAH ULTISOL DI NATAR DAN TAMAN BOGO”. Jurnal Agrotek Tropika 7, no. 1 (January 28, 2019): 249–256. Accessed January 5, 2026. https://jurnal.fp.unila.ac.id/index.php/JA/article/view/2989.