300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Ananas comosus (L.) Merr. [Pineapple]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
2
|
|
|
| Arithmetic Mean |
5%
|
|
|
| Standard Error |
9.2%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Zhu et al. (1997) |
open-top chambers
|
18%
|
|
|
|
Ziska et al. (1991) |
pots (12.5 liter)
|
-8%
|
|
|