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.

Dactylis glomerata L. [Orchardgrass]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
15
 
 
 Arithmetic Mean
18.3%
 
 
 Standard Error
4.3%
 
 

Individual Experiment Results

Journal References
Experimental Conditions
300 ppm
600 ppm
900 ppm

Bloor et al. (2008)
Well watered plants grown from seed for fifteen weeks in pots filled with 7.3 L of a 50:50 mix of sieved topsoil and river sand of low nitrogen content housed within naturally-lit growth chambers located inside a large greenhouse
0%

 
 

Bloor et al. (2008)
Well watered plants grown from seed for fifteen weeks in pots filled with 7.3 L of a 50:50 mix of sieved topsoil and river sand of high nitrogen content housed within naturally-lit growth chambers located inside a large greenhouse
28%

 
 

Bloor et al. (2009)
Shoot biomass of one-month-old well-watered plants grown for ten additional weeks in PVC pots (20 x 14 x 40 cm) -- filled with a 50:50 mix of loamy topsoil and river sand of low soil nitrogen (N) content -- located within naturally-lit growth chambers inside a greenhouse in Orsay, France
7%

 
 

Bloor et al. (2009)
Root biomass of one-month-old well-watered plants grown for ten additional weeks in PVC pots (20 x 14 x 40 cm) -- filled with a 50:50 mix of loamy topsoil and river sand of low soil nitrogen (N) content -- located within naturally-lit growth chambers inside a greenhouse in Orsay, France
5%

 
 

Bloor et al. (2009)
Shoot biomass of one-month-old well-watered plants grown for ten additional weeks in PVC pots (20 x 14 x 40 cm) -- filled with a 50:50 mix of loamy topsoil and river sand of high soil nitrogen (N) content -- located within naturally-lit growth chambers inside a greenhouse in Orsay, France
23%

 
 

Bloor et al. (2009)
Root biomass of one-month-old well-watered plants grown for ten additional weeks in PVC pots (20 x 14 x 40 cm) -- filled with a 50:50 mix of loamy topsoil and river sand of high soil nitrogen (N) content -- located within naturally-lit growth chambers inside a greenhouse in Orsay, France
53%

 
 

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%

 
 

Gunn et al. (1999)
hydroponics, controlled environment chambers, root
-16%

 
 

Gunn et al. (1999)
hydroponics, controlled environment chambers, shoot
26%

 
 

Gunn et al. (1999)
hydroponics, controlled environment chambers, total
20%

 
 

Harmens et al. (2000)
hydroponics, controlled environment cabinets, 0.15mM NO3-
20%

 
 

Harmens et al. (2000)
hydroponics, controlled environment cabinets, 0.6mM NO3-
40%

 
 

Harmens et al. (2000)
hydroponics, controlled environment cabinets, 1.5mM NO3-
19%

 
 

Harmens et al. (2000)
hydroponics, controlled environment cabinets, 6.0mM NO3-
28%

 
 

Hunt et al. (1991)
pots (1 liter)
21%

 
 

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