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.

Helianthus annuus [Sunflower]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
31
4
5
 Arithmetic Mean
42.5%
31.8%
70.2%
 Standard Error
4.7%
14.6
27.4%

Individual Experiment Results

Journal References
Experimental Conditions
300 ppm
600 ppm
900 ppm

Cheng et al. (2000)
EcoCELLs
27%

 
 

Gong et al. (2017)
Plant dry mass at harvest (42 days of CO2 enrichment) of well-watered and fertilized plants grown in controlled environment chambers; cv Sanluca
 

 
59%

Lakshmi et al. (2014)
Whole plant biomass of well-watered and fertilized single plants grown from seed to maturity out-of-doors in open-top chambers, each in its own 7-liter plastic pot filled with a mixture of vermiculite, Irish peat moss and perlite
40%

 
 

Lakshmi et al. (2014)
Grain yield biomass of well-watered and fertilized single plants grown from seed to maturity out-of-doors in open-top chambers, each in its own 7-liter plastic pot filled with a mixture of vermiculite, Irish peat moss and perlite
47%

 
 

Lakshmi et al. (2017)
Leaf dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
12%

 
 

Lakshmi et al. (2017)
Leaf dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
16%

 
 

Lakshmi et al. (2017)
Stem dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
43%

 
 

Lakshmi et al. (2017)
Stem dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
39%

 
 

Lakshmi et al. (2017)
Root dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
55%

 
 

Lakshmi et al. (2017)
Root dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
47%

 
 

Lakshmi et al. (2017)
Head dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
9%

 
 

Lakshmi et al. (2017)
Head dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
34%

 
 

Lakshmi et al. (2017)
Seed dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
37%

 
 

Lakshmi et al. (2017)
Seed dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
43%

 
 

Lakshmi et al. (2017)
Total plant dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
32%

 
 

Lakshmi et al. (2017)
Total plant dry weight of well-watered and fertilized plants grown in pots in open-top chambers; cv Hybrid KBSH-1
38%

 
 

Lehmeier et al. (2005)
Well watered and fertilized plants grown from seed in pots of washed quartz sand in four growth chambers for 15 days after initial imbibition of water
 

 
170%

Marc and Gifford (1984)
pots, growth cabinet
 

68%
 

Mark and Tevini (1997)
growth chamber, 13 days
24%

 
 

Mark and Tevini (1997)
growth chamber, 18 days
12%

 
 

Miyagi et al. (2007)
Seed or grain yield biomass of well watered and fertilized plants grown from seed to maturity in 4-liter pots filled with sand out-of-doors in open-top chambers
35%

 
 

Miyagi et al. (2007)
Whole plant biomass (at flowering) of well watered and fertilized plants grown from seed in 4-liter pots filled with sand out-of-doors in open-top chambers to the time of their natural death
11%

 
 

Miyagi et al. (2007)
Whole plant biomass (at time of death) of well watered and fertilized plants grown from seed in 4-liter pots filled with sand out-of-doors in open-top chambers to the time of their natural death
39%

 
 

Morison and Gifford (1984)
pots (3.2 kg soil)
45%

 
 

Morison and Gifford (1984)
pots (3.2 kg soil)
68%

 
 

Pal et al. (2014)
Shoot biomass of the DRSH 1 variety of well-watered and adequately-fertilized plants grown from seed to maturity out-of-doors on a sandy loam soil within open-top chambers
102%

 
 

Pal et al. (2014)
Shoot biomass of the DRSF 113 variety of well-watered and adequately-fertilized plants grown from seed to maturity out-of-doors on a sandy loam soil within open-top chambers
114%

 
 

Pal et al. (2014)
Seed biomass of the DRSH 1 variety of well-watered and adequately-fertilized plants grown from seed to maturity out-of-doors on a sandy loam soil within open-top chambers
59%

 
 

Pal et al. (2014)
Seed biomass of the DRSF 113 variety of well-watered and adequately-fertilized plants grown from seed to maturity out-of-doors on a sandy loam soil within open-top chambers
77%

 
 

Tang et al. (2003)
Plants grown from seed in pots with 1 kg natural topsoil and 100 mg kg-1 Cu for 24 days in ambient air (400 ppm CO2), after which one-third of the pots were exposed to air of 800 ppm CO2 and the other one-third to air of 1200 ppm CO2 for 12 additional days. The extra CO2 was only supplied from 0800 to 1100 on sunny days.
 

-2%
13%

Tang et al. (2003)
Plants grown from seed in pots with 1 kg natural topsoil and 200 mg kg-1 Cu for 24 days in ambient air (400 ppm CO2), after which one-third of the pots were exposed to air of 800 ppm CO2 and the other one-third to air of 1200 ppm CO2 for 12 additional days. The extra CO2 was only supplied from 0800 to 1100 on sunny days.
 

52%
104%

Tang et al. (2003)
Plants grown from seed in pots with 1 kg natural topsoil and 0 mg kg-1 Cu for 24 days in ambient air (400 ppm CO2), after which one-third of the pots were exposed to air of 800 ppm CO2 and the other one-third to air of 1200 ppm CO2 for 12 additional days. The extra CO2 was only supplied from 0800 to 1100 on sunny days.
 

9%
5%

Vanaja et al. (2011)
Plants grown from seed to maturity in open-top chambers out-of-doors one to each 5-L pot filled with ~6.5 kg of red soil maintained at 80% (well-watered, WW) of soil water content at field capacity
17%

 
 

Vanaja et al. (2011)
Plants grown from seed to maturity in open-top chambers out-of-doors one to each 5-L pot filled with ~6.5 kg of red soil maintained at 50% (drought-stressed, DS) of soil water content at field capacity
45%

 
 

Zerihun et al. (2000)
open-top chamber, low nitrogen
39%

 
 

Zerihun et al. (2000)
open-top chamber, medium nitrogen
11%

 
 

Zerihun et al. (2000)
open-top chamber, high nitrogen
101%

 
 

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