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Percent Photosynthesis (Net CO2 Exchange Rate) Increases for 300, 600 and 900 ppm
Increases in the Air's CO2 Concentration:

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Nymphaea marliac L. [Water Lily]

Journal References

Experimental Conditions
300 ppm

600 ppm

900 ppm
Allen et al. (1990)
pots (16.2 liter), 10°C
10%
 
 
Allen et al. (1990)
pots (16.2 liter), 33°C
60%
 
 
Idso et al. (1990)
Plants in 17-l pots in sunken metal stock tanks within open-top chambers
49%