Kristina, N., Resigia, E., & Herawati, N. . (2023). Ammonium Sulphate (ZA) and Organic Fertilizer to Improve Yield and Quality of Shallot Bulb (Allium ascalonicum L.) on Recovered Ultisols. Journal of Applied Agricultural Science and Technology, 7(3), 259-271. https://doi.org/10.55043/jaast.v7i3.150