Nurhidayati N, Mariati M. Utilization of maize cob biochar and rice husk charcoal as soil amendment for improving acid soil fertility and productivity. J. Degrade. Min. Land Manage. [Internet]. 2014 Oct. 17 [cited 2024 Dec. 13];2(1):223-30. Available from: https://jdmlm.ub.ac.id/index.php/jdmlm/article/view/88