Light. Specifying and measuring it: NOT so easy. I call shenanigans

[Hunter]

@Theo

I refer to Bruce Bugbee’s experiment with different lightsources, from LPS to incandescent, and there was hardly any difference in photosynthesis.

Is this the experiment you’re referring to? I found a couple different articles that hinted at a similar point though:

• Economic Analysis of Greenhouse Lighting: Light Emitting Diodes vs. High Intensity Discharge Fixtures
• http://onlinelibrary.wiley.com/doi/10.1111/php.12233/full

@Theo

It would be good to realize that the scientific community is still experimenting with light recipes for different crops, and we are very lucky that this industry is here solely by the virtue of a plant which in fact does quite well under this HPS spectrum.

Very true, and given the fact that evolution produces some unusual adaptations, I wouldn’t be surprised if there was some benefit to a fuller set of wavelengths.