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Percent Dry Weight (Biomass) Increases for 300, 600 and 900 ppm
Increases in the Air's CO2 Concentration:

For a more detailed description of this table, click here.

Trifolium pratense [Purple Clover]

Journal References

Experimental Conditions
300 ppm

600 ppm

900 ppm
Garten Jr. et al. (2008)
Open-top chamber study of plants grown from the seedling stage to maturity together with six other old-field species typical of the area (Oak Ridge, Tennessee, USA) over three consecutive growing seasons
0%
 
 
Kettunen et al. (2007)
Harvested biomass of plants grown within thermo-controlled greenhouses in sandy-loam-filled mesocosms together with timothy (Phleum pratense) at low soil nitrogen (N) level (5 g N m-2, respectively) for a period of three cuttings
18%
 
 
Kettunen et al. (2007)
Harvested biomass of plants grown within thermo-controlled greenhouses in sandy-loam-filled mesocosms together with timothy (Phleum pratense) at moderate soil nitrogen (N) level (10 g N m-2, respectively) for a period of three cuttings
15%
 
 
Saebo and Mortensen (1995)
Plants grown from seed in 20-cm-deep boxes in field within open-top chambers in cool climate; cv Moldstad
30%
 
 
Schadler et al. (2007)
Well watered and fertilized plants grown from seed for five weeks in pots filled with standard potting soil that were enclosed within tents made from translucid plastic foil that were located in a walk-in growth chamber
21%