Saurnida Siahaan Asianna , A. ., Siregar, R. ., & Satriawan, H. (2025). Analysis Of Magnesium Effect On Vegetative Growth Of Arabica Coffee Variety Sigarar Utang . Jurnal Penelitian Pertanian Terapan, 25(3), 21–32. https://doi.org/10.25181/jppt.v25i3.4082