300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Xanthium strumarium L. [Rough Cocklebur]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
4
|
1
|
|
| Arithmetic Mean |
30.8%
|
62%
|
|
| Standard Error |
12.9%
|
0
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Lewis et al. (2002) |
environmental chambers, vegetative growth phase
|
25%
|
|
|
|
Lewis et al. (2002) |
environmental chambers, flowering period
|
8%
|
|
|
|
Lewis et al. (2002) |
environmental chambers, fruiting period
|
16%
|
|
|
|
Loreto et al. (1992) |
pots, greenhouse
|
74%
|
62% |
|