300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Poa pratensis L. [Kentucky Bluegrass]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
176.3%
|
|
|
| Standard Error |
67%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Crous et al. (2010) |
Photosynthesis of plants growing in the sixth through ninth year of the BioCON FACE Experiment in Central Minnesota (USA) under conditions of "chronically low levels of nitrogen addition in a nutrient-poor prairie grassland"
|
323%
|
|
|
|
Ellsworth et al. (2004) |
Plants grown under natural conditions for three years in a FACE study
|
167%
|
|
|
|
Nie et al. (1992) |
Closed-top chambers in field in 2nd year of study
|
39%
|
|
|