Matheus, Rupa, Donatus Kantur, and Leta Rafael Levis. “Using Soil Amendments and Mycorrhiza to Improve Chemical Properties of Degraded Calcareous Soil and Yield of Sorghum in Dryland”. Journal of Degraded and Mining Lands Management 11, no. 3 (April 1, 2024): 5673–5681. Accessed June 15, 2024. https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/16414.