300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Agave deserti Engelm. [Desert Agave]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
2
|
|
|
| Arithmetic Mean |
34.5%
|
|
|
| Standard Error |
3.2%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Graham and Nobel (1996) |
environmental chamber
|
39%
|
|
|
|
Nobel and Hartsock (1986) |
pots
|
30%
|
|
|