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


For a more detailed description of this table, click here.

Gossypium hirsutum L. [Cotton]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
20
1
 
 Arithmetic Mean
44.2%
111%
 
 Standard Error
5.2%
0
 

Individual Experiment Results

Journal References
Experimental Conditions
300 ppm
600 ppm
900 ppm

Breen et al. (1986)
field
92%

 
 

Bunce and Nasyrov (2012)
Photosynthesis of first, second and third leaves of seedlings grown in 20-cm-diamerter pots - filled to a depth of 21 cm with a soil mixture containing a fertile silt loam soil, peat moss, and perlite in the ratio of 3:1:1 by volume - within controlled environment chambers under control (C) conditions
17%

 
 

Bunce and Nasyrov (2012)
Photosynthesis of first, second and third leaves of seedlings grown in 20-cm-diamerter pots - filled to a depth of 21 cm with a soil mixture containing a fertile silt loam soil, peat moss, and perlite in the ratio of 3:1:1 by volume - within controlled environment chambers under water-stressed (WS) conditions
31%

 
 

Hendrey et al. (1993)
FACE, single leaf, early in the season
47%

 
 

Hendrey et al. (1993)
FACE, whole canopy
42%

 
 

Hesketh et al. (1984)
field
68%

111%
 

Hileman et al. (1994)
FACE, upper leaf
42%

 
 

Hileman et al. (1994)
FACE, canopy
48%

 
 

Kakani et al. (2004)
Well-watered and fertilized plants grown from seed in sunlit controlled environment chambers for 61 days after emergence; cv. NuCOTN 33B
27%

 
 

Plaut and Federman (1991)
pots (22-cm)
55%

 
 

Radin et al. (1987)
field, open-top chambers, well-watered
76%

 
 

Radin et al. (1987)
field, open-top chambers, water-stressed
78%

 
 

Reddy and Zhao (2005)
Well-watered plants grown from seed for 85 days in pots within SPAR units (outdoor steel bins with Plexiglas chamber tops) with soil potassium (K) concentrations that were 100% of optimum
56%

 
 

Reddy and Zhao (2005)
Well-watered plants grown from seed for 85 days in pots within SPAR units (outdoor steel bins with Plexiglas chamber tops) with soil potassium (K) concentrations that were 40% of optimum
51%

 
 

Reddy and Zhao (2005)
Well-watered plants grown from seed for 85 days in pots within SPAR units (outdoor steel bins with Plexiglas chamber tops) with soil potassium (K) concentrations that were 20% of optimum
44%

 
 

Reddy and Zhao (2005)
Well-watered plants grown from seed for 85 days in pots within SPAR units (outdoor steel bins with Plexiglas chamber tops) with soil potassium (K) concentrations that were 5% of optimum
0%

 
 

Reddy and Zhao (2005)
Well-watered plants grown from seed for 85 days in pots within SPAR units (outdoor steel bins with Plexiglas chamber tops) with soil potassium (K) concentrations that were 0% of optimum
0%

 
 

Zhao et al. (2004)
Plants grown from seed in fine sand in sunlit growth chambers under well watered and fertilized conditions from crop emergence until three weeks after first flower stage under 0 kJm-2d-1 of UV-B radiation
32%

 
 

Zhao et al. (2004)
Plants grown from seed in fine sand in sunlit growth chambers under well watered and fertilized conditions from crop emergence until three weeks after first flower stage under 8 kJm-2d-1 of UV-B radiation
34%

 
 

Zhao et al. (2004)
Plants grown from seed in fine sand in sunlit growth chambers under well watered and fertilized conditions from crop emergence until three weeks after first flower stage under 16 kJm-2d-1 of UV-B radiation
43%

 
 

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