Widowati, Widowati, Retno Wilujeng, Nurhidayati Nurhidayati, and Eko Rini Indrayatie. 2024. “Improvement of N, P, and K Availability of Post-Brick Mining Soil to Increase Maize Yield by Applying Different Types of Biochar”. Journal of Degraded and Mining Lands Management 11 (2). Malang, Indonesia:5319-27. https://doi.org/10.15243/jdmlm.2024.112.5319.