PrimantiIma Sandra, and Oteng Haridjaja. “Phonska Fertilizer Leaching and Its Effect on Spinach Growth and Productivity (Amaranthus Tricolor. L) on Latosol With Different Clay Content”. Jurnal Ilmu Tanah dan Lingkungan 7, no. 1 (April 1, 2005): 22-26. Accessed March 29, 2024. https://journal.ipb.ac.id/index.php/jtanah/article/view/2364.