3 ms·

Can you point to any research showing what the optimum level of co2 should be for plant growth?

• beaconstudios 5y ago
  Can you? You're presumably the one arguing, in the face of the majority of climate scientists, that more CO2 is actually a good thing. For what it's worth, no gardener or farmer is having to pump CO2 into the air because their plants are dying.
  • mrfusion 5y ago
    Your claim was “plants aren’t struggling for it” I’m asking if you can back up that claim. I guess not.
    • beaconstudios 5y ago
      Struggling as in dying. I've seen no evidence that plants are dying of lack of CO2. In my research into permaculture I've never seen any issues with plants lacking CO2 - primarily plants struggle for nitrogen, hence the use of fertiliser (or in the case of permaculture, other nitrogen fixing techniques like using bacteria or cycling legumes, or cool stuff like using aquaponics to recycle fish poo into fertiliser). Maybe they could grow even more successfully with some kind of CO2 biodome, I don't know - but my point was that lack of CO2 is not causing problems with plants growing, but it is causing problems with our biosphere slowly dying.
• kragen 5y ago
  It depends on the plant. Most plants grow faster at higher levels than the current 400ppm, so CO₂ supplementation in greenhouses is a thing, which you can read about if you like. Some plants grow fastest at levels around 1000ppm, and I think for others it's closer to 10'000 ppm, at which level it starts to become toxic for the humans. Of course if Earth's atmosphere were 10'000 ppm CO₂ we would see mass extinctions, major ocean acidification, etc.