What is the limiting factor in plants growing and production speed given that all nutrients are adequate in the soil.
Some factors I can think of:
- intensity of light
- concentration of CO2 in the air.
Some ideas to fix both: you could place reflective surfaces near a your crop. In case of greenhouse, you could also raise CO2 levels with a CO2 generator. Raising from current 0.04% to 0.5% (12.5x increase) does not require a lot of combustion.
I haven't seen anyone doing this. Why not? What are pros and cons and caveats?