300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Lolium temulentum L. [Darnel Ryegrass]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
44.7%
|
|
|
| Standard Error |
29.2%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Lewis et al. (1999) |
controlled environment chambers, low light
|
7%
|
|
|
|
Lewis et al. (1999) |
controlled environment chambers, medium light
|
11%
|
|
|
|
Wardlaw (1982) |
pots (12-cm )
|
116%
|
|
|