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.

Medicago sativa L. [Alfalfa]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
19
 
 
 Arithmetic Mean
24.6%
 
 
 Standard Error
3.8%
 
 

Individual Experiment Results

Journal References
Experimental Conditions
300 ppm
600 ppm
900 ppm

Aranjuelo et al. (2005a)
Plants inoculated with Sinorhizobium meliloti in 13-liter pots in temperature gradient tunnels grown from the age of one month under well-watered conditions at ambient air temperature over three different years
5%

 
 

Aranjuelo et al. (2005a)
Plants inoculated with Sinorhizobium meliloti in 13-liter pots in temperature gradient tunnels grown from the age of one month under well-watered conditions at ambient +4?C air temperature over three different years
50%

 
 

Aranjuelo et al. (2005a)
Plants inoculated with Sinorhizobium meliloti in 13-liter pots in temperature gradient tunnels grown from the age of one month under droughted conditions at ambient air temperature over three different years
16%

 
 

Aranjuelo et al. (2005a)
Plants inoculated with Sinorhizobium meliloti in 13-liter pots in temperature gradient tunnels grown from the age of one month under droughted conditions at ambient +4?C air temperature over three different years
42%

 
 

Aranjuelo et al. (2005b)
Seedlings in pots in temperature gradient tunnels maintained at ambient temperature and at high soil water content
15%

 
 

Aranjuelo et al. (2005b)
Seedlings in pots in temperature gradient tunnels maintained at elevated temperature (+4?C) and at high soil water content
43%

 
 

Aranjuelo et al. (2005b)
Seedlings in pots in temperature gradient tunnels maintained at ambient temperature and at low soil water content (half as much)
6%

 
 

Aranjuelo et al. (2005b)
Seedlings in pots in temperature gradient tunnels maintained at elevated temperature (+4?C) and at low soil water content (half as much)
47%

 
 

Aranjuelo et al. (2005b)
Seedlings grown in 13-L pots for 3 years in polyethylene-covered temperature gradient tunnels at ambient temperature and at high soil water content
5%

 
 

Aranjuelo et al. (2005b)
Seedlings grown in 13-L pots for 3 years in polyethylene-covered temperature gradient tunnels at elevated temperature (+4?C) and at high soil water content
46%

 
 

Aranjuelo et al. (2005b)
Seedlings grown in 13-L pots for 3 years in polyethylene-covered temperature gradient tunnels at ambient temperature and at low soil water content (half as much)
16%

 
 

Aranjuelo et al. (2005b)
Seedlings grown in 13-L pots for 3 years in polyethylene-covered temperature gradient tunnels at elevated temperature (+4?C) and at low soil water content (half as much)
38%

 
 

Aranjuelo et al. (2008)
Photosynthesis of thirty-day-old seedlings grown for 30 more days in two different years in 13-L pots filled with a 2:1 ratio of inert perlite and vermiculite recessed into the ground among other similar plants growing in a temperature-gradient greenhouse at ambient air temperature
15%

 
 

Aranjuelo et al. (2008)
Photosynthesis of thirty-day-old seedlings grown for 30 more days in two different years in 13-L pots filled with a 2:1 ratio of inert perlite and vermiculite recessed into the ground among other similar plants growing in a temperature-gradient greenhouse at ambient + 4?C air temperature
34%

 
 

Aranjuelo et al. (2009)
Photosynthesis of thirty-day-old plants (5 per each 2-liter pot filled with a 2:1 mix of perlite:vermiculate) grown for 30 more days in controlled environment chambers and maintained at a well-watered (WW, maximum soil water content)state
14%

 
 

Aranjuelo et al. (2009)
Photosynthesis of thirty-day-old plants (5 per each 2-liter pot filled with a 2:1 mix of perlite:vermiculate) grown for 30 more days in controlled environment chambers and maintained at a water-deficient (WD, 50% of maximum soil water content) state
8%

 
 

Bertrand et al. (2007)
Photosynthesis of well watered and fertilized plants inoculated with rhizobia (Sinorhizobium meliloti strain A2) grown from seed for 56 days ten to a pot of non-sterile topsoil in controlled environment chambers
40%

 
 

Bertrand et al. (2007)
Photosynthesis of well watered and fertilized plants inoculated with rhizobia (Sinorhizobium meliloti strain NRG34) grown from seed for 56 days ten to a pot of non-sterile topsoil in controlled environment chambers
0%

 
 

Bunce (1995)
semi-open acrylic chambers
28%

 
 

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