Simanjuntak, P., & Manalu, C. J. (2022). Response of Growth and Production of Shallots (Allium Ascalonicum L) to the Application of Chicken Manure and Volcanic Ash. Journal Research of Social Science, Economics, and Management, 1(8), 1095–1102. https://doi.org/10.59141/jrssem.v1i8.129