Pitaloka, F., Murcitro, B.G. and Fahrurrozi*, F. 2021. Reduction of Synthetic Nitrogen Fertilizer Using Tithonia-based Liquid Organic Fertilizer for Sweet Corn Production in Ultisols. CURRENT APPLIED SCIENCE AND TECHNOLOGY. 22, 3 (Sep. 2021), DOI: 10.55003/cast.2022.03.22.005 (9 pages). DOI:https://doi.org/10.55003/cast.2022.03.22.005.