Indriani, Tika, Yudhy Harini Bertham, Hasanudin Hasanudin, Prasetyo Prasetyo, and Bilman Wilman Simanihuruk. 2022. “Effect of Humic Acid on Nutrient Availability and Yield of Upland Rice Inoculated With Biofertilizers in the Coastal Area”. TERRA : Journal of Land Restoration 5 (1):15-20. https://doi.org/10.31186/terra.5.1.15-20.