Sauti, M. S. (2024) “Effects Of Blue Npk Fertilizer And/Or Biochar On The Growth And Yield Of Okra (Abelmoschus Esculentus L.) Plant Using Silabukan Soil”, Jurnal Penelitian Pertanian Terapan, 24(2), pp. 231–244. doi: 10.25181/jppt.v24i2.2783.