300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Cirsium arvense (L.) Scop. [Canadian Thistle]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
83.3%
|
|
|
| Standard Error |
33.5%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Ziska (2002) |
controlled environment chambers
|
61%
|
|
|
|
Ziska et al. (2004) |
Shoot biomass of plants grown from root cuttings for two months in the field within open-top chambers
|
26%
|
|
|
|
Ziska et al. (2004) |
Root biomass of plants grown from root cuttings for two months in the field within open-top chambers
|
163%
|
|
|