Primayuda, Aris, Abraham Suriadikusumah, and M Amir Solihin. 2022. “Identifying Pyrite Layer Depth and Its Association to Oil Palm Health and Productivity (Elaeis Guineensis Jacq.) ( A Case Study at PT Sawit Sumbermas Sarana Tbk’s Oil Palm Plantation )”. Jurnal Ilmu Tanah Dan Lingkungan 24 (1), 6-13. https://doi.org/10.29244/jitl.24.1.6-13.