300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Sorghum halapense (L.) Pers. [Johnsongrass]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
-13%
|
|
|
| Standard Error |
14.3%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Carter and Peterson (1983) |
pots (11.4 x 11.4 cm, 8 plants)
|
-48%
|
|
|
|
Patterson et al. (1984) |
pots (0.75 liters) growth chambers
|
2%
|
|
|
|
Ziska and Bunce (1997) |
glasshouse
|
7%
|
|
|