Hadi, P., Noviana, R. R., Suwardi, & Widodo, A. M. (2026). Interactive Effects of Fertilizer Types and Shading Levels on ‎Growth, Yield, and Piperine Content of Piper Retrofractum Under ‎Tropical Agroecosystems. ISEJ : Indonesian Science Education Journal, 7(2), 77-92. https://doi.org/10.62159/isej.v7i2.2094