ask a farmer and get the answer "More light"
Terrestrial farming ? If it is that makes sense for the farmers as diffusion in air is 1000 times faster than water. Think the constant battle we have in our planted High tech tanks is adequate flow in all areas. Give them the CO2 supply they need for amount of photons being aimed at them then they can use the photons and one less photon for the aglea to use, complex carbs output increases and growth takes place assuming not nutrient deficient OFC. Well thats my present take on it.
We humans even can get a sun tan in the shade..
Living proof is me and wife, she sits in she roasting like a pig on a stick, I sit in shade, I get better tan, little more complex than that OFC
Cheers,
Good to see you posting again , We thought the Matrix had you for a while