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Peter Grant
This may be true, but I have noticed that in greenhouse these lights are mounted high above the plants. By the inverse square law, the amount of light falling on the plants is very low. In my indoor systems, I often position my LED lights just a few inches above the plants. This does not cause heating problems, and it multiplies the number of photons by 2-3 orders of magnitude.
That’s a great observation. Lights mounted high in greenhouses can indeed result in lower light intensity due to the inverse square law. Positioning LED lights closer to plants in indoor systems can indeed significantly boost light intensity without causing heat issues, enhancing plant growth. Additionally, there are lights available for intracanopy lighting, which help provide a more uniform light distribution throughout the plant canopy. While top lighting systems utilize software to optimize light uniformity, intracanopy lighting remains a valuable option for ensuring better coverage. Check out our intracanopy lighting option here: https://hortamericas.com/catalog/horticultural-lighting/greenhouse-lighting/arize-integral/