“The Effect of Coating Materials in a Slow-Release Urea-Organic Fertilizer Formula on Changes in Soil Chemical Properties and Nitrogen Availability: Pengaruh Bahan Pembungkus Formula Pupuk Lepas Lambat Urea-Organik Terhadap Perubahan Sifat Kimia Tanah dan Ketersediaan Hara Nitrogen ” (2025) Nabatia, 13(2), pp. 116–125. doi:10.21070/nabatia.v5i2.1677.