“The Effect of Giving NPK Fertilizer On Growth and Results Plant Purple (Solanum Melongena L.)”, agriscience, vol. 4, no. 1, pp. 54–62, Jul. 2021, Accessed: Aug. 17, 2025. [Online]. Available: http://agriculturalscience.unmerbaya.ac.id/index.php/agriscience/article/view/49