Manullang, F. A., Lubis, I., & Munif Ghulamahdi. (2025). Response of Growth and Yield of "IPB 9G" Rice to The Application of NPK and Biofertilizers. Journal of Tropical Crop Science, 12(01), 70–76. https://doi.org/10.29244/jtcs.12.01.70-76