Hartono, Arief, Lilik Tri Indriyati, Putri Tria Santari, and Neng Elin Novianti. “Chemical Properties Changes and Releasing Pattern of Ammonium and Nitrate on Ultisol Darmaga Fertilized by Fishpond Sediment-Based Pellet Fertilizer: Perubahan Sifat Kimia Dan Pola Pelepasan Amonium Dan Nitrat Pada Ultisol Darmaga Yang Diberi Pupuk Pelet Berbahan Dasar Lumpur Kolam Ikan”. Jurnal Ilmu Tanah dan Lingkungan 21, no. 2 (October 1, 2019): 78-86. Accessed July 25, 2021. https://jagb.journal.ipb.ac.id/index.php/jtanah/article/view/29793.