Sugiyanta S, Tustiyani I, Dinarti D. Improving the Effectivity of Urea Fertilizer in Shallot by Using Urease and Nitrification Inhibitors. J. Ilmu. Pertan. Indones. [Internet]. 2019 Oct. 31 [cited 2025 Dec. 28];24(4):289-94. Available from: https://journal.ipb.ac.id/JIPI/article/view/28044