300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Spinacia oleracea L. (Spinach)
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
5
|
1
|
|
| Arithmetic Mean |
46.8%
|
244%
|
|
| Standard Error |
11.4%
|
0
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Battistelli et al. 1991 |
hydroponics, low light
|
40%
|
|
|
|
Battistelli et al. 1991 |
hydroponics, high light
|
25%
|
|
|
|
Dietz (1986) |
pots
|
|
244% |
|
|
Furbank and Walker (1986) |
detached leaves
|
18%
|
|
|
|
Jain et al. (2007) |
Photosynthesis of plants at mid-season growing out-of-doors in soil under recommended agricultural practices in open-top chambers
|
65%
|
|
|
|
Jin et al. (2009) |
Photosynthesis of fully expanded leaves of well watered three-week old plants grown five to each 3.5-liter pot filled with 5 kg of a loam soil in controlled-environment chambers
|
86%
|
|
|