調光モジュールLED光源ユニットを用いた植物の生産性向上への試み

抄録

Light-emitting diodes (LEDs) have proven to be popular as a light source for growing plants because of their longevity and good usability. A characteristic feature of LEDs is their use of a single colored chip that can be digitally controlled in large numbers. This functional advantage of LEDs is useful in controlling the wavelength and intensity of light to suit the growth conditions of plants. Many experimental trials have used LEDs for improving the growth, quality, and storage of plants, as well as controlling their flowering. Published data indicate that some plants are highly responsive to the colour and quantity of LED light. Therefore, we constructed an LED unit with control modules that make it possible to schedule variations in light quality and quantity to maximize plant growth. We provide an outline of the components and structure of the system and describe its potential uses. The ultimate objective of this work is to develop individual schedules for the light source that are suitable for growing different vegetables. The results of growth experiments using the system indicate the potential of the digital control of LED light in improving plant productivity.