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


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Dactylis glomerata L. [Orchardgrass]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
13
13
13
 Arithmetic Mean
36.3%
0%
0%
 Standard Error
7.3%
0
0%

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Beerling and Woodward (1995)

controlled environment growth cabinets
-3%

Bunce (1995)

semi-open acrylic chambers
62%

Harmens et al. (2000)

controlled environment cabinets,.15mM NO3-, medium light
17%

Harmens et al. (2000)

controlled environment cabinets,.15mM NO3-, high light
23%

Harmens et al. (2000)

controlled environment cabinets,.6mM NO3-, medium light
16%

Harmens et al. (2000)

controlled environment cabinets,.6mM NO3-, high light
34%

Harmens et al. (2000)

controlled environment cabinets,1.5mM NO3-, medium light
35%

Harmens et al. (2000)

controlled environment cabinets,1.5mM NO3-, high light
63%

Harmens et al. (2000)

controlled environment cabinets,6.0mM NO3-, medium light
27%

Harmens et al. (2000)

controlled environment cabinets,6.0mM NO3-, high light
63%

Nagy and Tuba (2008)

Photosynthesis of plants grown in a mini-FACE study conducted at Godollo, Hungary
90%

Szente et al. (1998)

Plants grown for 231 days in open-top chambers
45%

Szente et al. (1998)

Plants grown for 231 days in open-top chambers


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