Light supplementation study

A pretty cool study I read on different led lighting supplementation,along with the sun ,different setups running 660nm Photored and 435nm Blue, Warm White LED, and HPS as a control on Lambs Lettuce.
This study shows that the 90 660nm / 10 435nm grew the best out of all their other lights tested, with the least efficient being warm white LED's.
I wonder if the QB's would get an added benefit from adding 660nm/435nm monodiodes in the setup.

https://www.researchgate.net/publication/274026612_Effects_of_LED_supplemental_lighting_on_yield_and_some_quality_parameters_of_lamb's_lettuce_grown_in_two_winter_cycles

We're not growing lettuce.

Yeah, for lambs lettuce and other salads it's true but for C3 plants like tomatos or our darling not so much.
It's true that red/blue is the most efficient way to drive photosynthesis but the plants look unnatural and it is even harder to keep the leaf temps at the desired values, since they are 2° lower under red/blue than under warmwhite.
Especially tall plants profit from the green part in white light. And strong red/blue leads earlier to saturation which means more bleaching. And that's only a few reasons...

diyled said:

We're not growing lettuce.

Click to expand...

depends on who you ask, some people have called in the devils lettuce.