Plant growth regulators like gibberellic acid, naphthalene acetic acid, and dichlorophenoxyacetic acid were tested on brinjal plants to see their effects on growth and yield. The combination of these regulators significantly increased plant height, number of leaves, fruit weight, and quality. The best results were seen with a specific combination of gibberellic acid, naphthalene acetic acid, and dichlorophenoxyacetic acid at certain concentrations. Overall, the combined application of these plant growth regulators had a positive impact on the growth, flowering, quality, and yield of brinjal plants.