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Horticulture LEDs in Soybean Outdoor Light Supplementation - a Case Study

In the present paper, a case study of the use of horticultural LEDs in artificial light supplementation is presented. The main system characteristics are demonstrated, along with the concepts used for lighting systems project design. It is necessary to investigate the plant response to light in different life stages for a proper lighting system design. Using a 40 W, 100$\mu$mol/s light engine with purple light, a combination of blue and red spectra, a proof of concept was installed in a soybean field using an irrigation pivot axis. Two experiments are shown. A phenological data acquisition method provided by the agriculture specialists reveals the increment of crop development during the blooming stage in experiment one. Experiment two shows the effect of supplemental light with a light source fixed at an irrigation pivot axis.