Harwanto, Harwanto, et al. “Morphological Responses and Productivity of Indigofera (Indigofera Zollingeriana) With Varied Fertilization in Limestone Post-Mining Land ”. Journal of Tropical Crop Science, vol. 12, no. 03, Oct. 2025, pp. 525-3, doi:10.29244/jtcs.12.03.525-535.