Percent Photosynthesis (Net CO2 Exchange Rate) Increases for
300, 600 and 900 ppm Increases in the Air's CO2 Concentration:


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

Lolium perenne L. [Perennial Ryegrass]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
32
 
 
 Arithmetic Mean
39.8%
 
 
 Standard Error
3.7%
 
 

Individual Experiment Results

Journal References
Experimental Conditions
300 ppm
600 ppm
900 ppm

Aeschlimann et al. (2005)
Nine-year-long FACE study
40%

 
 

Ainsworth et al. (2003)
10-yrs, FACE in the field
45%

 
 

Beerling and Woodward (1995)
controlled environment growth cabinets
31%

 
 

Casella and Soussana (1997)
plastic tunnels, low nitrogen
24%

 
 

Casella and Soussana (1997)
plastic tunnels, high nitrogen
28%

 
 

Ferris et al. (1996)
greenhouse, ambient temperature
4%

 
 

Ferris et al. (1996)
greenhouse, ambient + 4°C temperature
46%

 
 

Greer et al. (2000)
controlled environment chambers, 18 °C
27%

 
 

Greer et al. (2000)
controlled environment chambers, 28 °C
86%

 
 

Guo et al. (2006)
Photosynthesis of plants at the six-year point of a FACE study of a non-irrigated grazed pasture that was established over half a century earlier, late growth phase before grazing
29%

 
 

Guo et al. (2006)
Photosynthesis of plants at the six-year point of a FACE study of a non-irrigated grazed pasture that was established over half a century earlier, early growth phase after grazing
46%

 
 

Hunt et al. (1991)
pots (1 liter)
29%

 
 

Isopp et al. (2000a)
FACE, 9 days after partial defoliation,low nitrogen
44%

 
 

Isopp et al. (2000a)
FACE, 9 days after partial defoliation,high nitrogen
34%

 
 

Isopp et al. (2000a)
FACE, 23 days after partial defoliation,low nitrogen
25%

 
 

Isopp et al. (2000a)
FACE, 23 days after partial defoliation,high nitrogen
47%

 
 

Isopp et al. (2000b)
FACE, 9 days after defoliation,low nitrogen
44%

 
 

Isopp et al. (2000b)
FACE, 9 days after defoliation,high nitrogen
64%

 
 

Isopp et al. (2000b)
FACE, 23 days after defoliation,low nitrogen
38%

 
 

Isopp et al. (2000b)
FACE, 23 days after defoliation,high nitrogen
70%

 
 

Jia et al. (2010)
Photosynthesis of adequately fertilized plants grown from seed for 58 days out-of-doors within open-top chambers in pots filled with rice-field soil artificially contaminated with 0.03 mg Cd/kg soil
33%

 
 

Jia et al. (2010)
Photosynthesis of adequately fertilized plants grown from seed for 58 days out-of-doors within open-top chambers in pots filled with rice-field soil artificially contaminated with 24.7 mg Cd/kg soil
32%

 
 

Jia et al. (2010)
Photosynthesis of adequately fertilized plants grown from seed for 58 days out-of-doors within open-top chambers in pots filled with rice-field soil artificially contaminated with 99.5 mg Cd/kg soil
27%

 
 

Newton et al. (1995)
controlled environment rooms
64%

 
 

Nijs et al. (1989)
containers (13-cm deep)
55%

 
 

Nijs and Impens (1996)
greenhouses, ambient temperature
8%

 
 

Nijs and Impens (1996)
greenhouses, elevated temperature
26%

 
 

Overdieck and Bossemeyer (1985)
glasshouse
50%

 
 

Rogers et al. (1998)
Plants grown as a frequently-cut herbage crop in a FACE experiment at high soil nitrogen concentration
44%

 
 

Rogers et al. (1998)
Plants grown as a frequently-cut herbage crop in a FACE experiment at low soil nitrogen concentration
44%

 
 

Van den Berge et al. (2011)
Photosynthesis of well-watered and fertilized mixed grassland plants growing in controlled-environment chambers at the University of Antwerp, Wilrijk, Belgium, under current climate (temperature and CO2 concentration) conditions and future climate (current T + 3°C, current CO2 + 230 ppm) conditions with no abnormal soil pollution
-8%

 
 

von Caemmerer et al. (2001)
Two-year grazed pasture FACE study
96%

 
 

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