Roviq, Mochammad, Anna Satyana Karyawati, Puri Kholifatush Sholihah, and Ellis Nihayati. 2023. “Manipulation of Calcareous Soil PH for Temulawak (Curcuma Xanthorrizha Roxb.) Cultivation”. Journal of Degraded and Mining Lands Management 11 (1). Malang, Indonesia:4999-5006. https://doi.org/10.15243/jdmlm.2023.111.4999.