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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.

Dactylis glomerata L. [Orchardgrass]

Journal Reference
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%
 
 
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%
 
 
hydroponics, controlled environment chambers, root
-16%
 
 
hydroponics, controlled environment chambers, shoot
26%
 
 
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%