Razak, A., Barlian, E., Herdi, H., Marten, T. and Sholichin, M. 2023. Training on Making NPK Liquid Organic Fertilizer With The Application of Econobiotechnology. Science and Environmental Journal for Postgraduate. 5, 1 (Jan. 2023), 71-76. DOI:https://doi.org/10.24036/senjop.v5i1.153.