300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Prunella vulgaris L. [Selfheal]
300 ppm
|
600 ppm
|
900 ppm
|
|
Number of Results |
2
|
|
|
Arithmetic Mean |
78%
|
|
|
Standard Error |
17.7%
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
Sanders et al. (1998) |
Grown from seed in 750-cm3 pots of calcareous soil in climate-controlled chambers for 18 weeks
|
53%
|
|
|
Sanders et al. (1998) |
Grown from seed in 750-cm3 pots of calcareous soil in climate-controlled chambers for 20 weeks
|
103%
|
|
|