The Development of LED Grow Light for Greenhouse Cultivation

Introduction. Lighting is one of the key factors influencing the efficient greenhouse cultivation. In this context, LED grow lights are an innovative solution that allows users to precisely adjust the light parameters necessary for optimal photosynthetic processes. Aim of the Article. The aim of the work is developing and testing the LED grow light with optimal spectrum and light intensity to ensure efficient growth, development and photosynthesis of plants in greenhouses. Materials and Methods. The LED grow light was developed in accordance with the regulatory standards that define the basic requirements in light technology for plant growth: GOST R 57671-2017 and GOST R 58461-2019. There is presented the sequence of development stages, according to which this grow light was developed. Results. As the light source, there was chosen the Full Spectrum-1 LED (China) with two prominent emission peaks at 440 nm and 642 nm. For the grow light, a spotlight housing was selected to direct light precisely onto the plants, thereby ensuring maximum efficiency of photosynthesis and growth. The analysis of ray tracing results in TracePro showed that the LED grow light model has a light distribution close to the cosine type. The radiant flux of emission was 4.14 watts, and the photosynthetic photon flux was 16.6 μmol/s. Discussion and Conclusion. The developed LED grow light has a photosynthetic photon flux of 16.2 μmol/s at a power consumption of 8.8 watts. The photosynthetic efficiency of the grow light was 1.84 μmol/J. Thus, this grow light can be used for the efficient greenhouse cultivation, providing optimal lighting conditions and contributing to increased crop yield and the quality of agricultural crops