300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Salvia Nemorosa [Woodland Sage]
300 ppm
|
600 ppm
|
900 ppm
|
|
Number of Results |
2
|
|
|
Arithmetic Mean |
277.5%
|
|
|
Standard Error |
136.1%
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
Nadas et al. (2008) |
Photosynthesis of plants growing in monoliths extracted from a grassland and transplanted into open-top chambers, where they were exposed to differential atmospheric CO2 for 15 months
|
85%
|
|
|
Szente et al. (1998) |
Plants grown for 231 days in open-top chambers
|
470%
|
|
|