This research was conducted to determine the effect of application of NPK fertilizer on the growth and yields of lettuce on a floating basis. This reseharch was done in ‘embung’ which is in Campus Area of University of Sriwijaya, Indralaya, Ogan Ilir, South Sumatera. That was done from June 2021 up to August 2021. The design was used in this reserch was Randomized Complitely Block Design (R…