Kajian Variasi Intensitas Cahaya dan Lama Penyinaran Lampu LED (Light Emitting Diode) terhadap Pertumbuhan dan Produktivitas Tanaman Pakcoy (Brassica rapa L.)

Abstract

LED (Light Emitting Diode) lamps are a type of lamp that can be used as a light source for plants. The color of the lights that is suitable for plant growth needs to be determined precisely to obtain optimal growth and productivity of pak choy (Brassica rapa L.) plants. The aim of this research is to obtain the best light intensity and duration of exposure to white LED (Light Emitting Diode) grow lights for the growth and productivity of pak choy (Brassica rapa L.) plants using rockwool as a growing medium. This research was conducted using experimental methods and a factorial completely randomized design (CRD). The first factor is treatment of light intensity of 14 watts (I1), light intensity of 28 watts (I2) and light intensity of 42 watts (I3). The second factor is 10 hours of exposure (T1), 12 hours of exposure (T2) and 14 hours of exposure (T3). The research results showed that with a light intensity of 42 watts and a light duration of 14 hours, the best results were obtained for the parameters of chlorophyll content, plant height, number of leaves, leaf area, photosynthesis analysis and harvest index.