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.

Phleum pratense [Timothy]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
20
 
 
 Arithmetic Mean
14.9%
 
 
 Standard Error
3.4%
 
 

Individual Experiment Results

Journal References
Experimental Conditions
300 ppm
600 ppm
900 ppm

Juknys et al. (2011)
Aboveground biomass of plants grown from seed for 21 days after germination within controlled-environment chambers at a density of 25 plants per each of three 5-L pots per treatment filled with neutral (pH 6.0-6.5) peat substrate
33%

 
 

Kettunen et al. (2005)
Plants grown from seed in peat soil mesocosms in greenhouses under 2 g N m-2 of added fertilizer; total biomass (sum of 4 aboveground harvests plus final root mass)
10%

 
 

Kettunen et al. (2005)
Plants grown from seed in peat soil mesocosms in greenhouses under 6 g N m-2 of added fertilizer; total biomass (sum of 4 aboveground harvests plus final root mass)
19%

 
 

Kettunen et al. (2005)
Plants grown from seed in peat soil mesocosms in greenhouses under 10 g N m-2 of added fertilizer; total biomass (sum of 4 aboveground harvests plus final root mass)
13%

 
 

Kettunen et al. (2006)
Total biomass of appropriately fertilized plants grown for 4 to 5 months from seed sown in peat soil in a number of mesocosms distributed within a growth chamber under equal water application
14%

 
 

Kettunen et al. (2006)
Total biomass of appropriately fertilized plants grown for 4 to 5 months from seed sown in peat soil in a number of mesocosms distributed within a growth chamber under equal soil moisture maintenance
14%

 
 

Kettunen et al. (2006)
Total biomass of appropriately fertilized plants grown for 4 to 5 months from seed sown in sand soil in a number of mesocosms distributed within a growth chamber under equal water application
15%

 
 

Kettunen et al. (2006)
Total biomass of appropriately fertilized plants grown for 4 to 5 months from seed sown in sand soil in a number of mesocosms distributed within a growth chamber under equal soil moisture maintenance
21%

 
 

Kettunen et al. (2007a)
Harvested biomass of plants grown within thermo-controlled greenhouses in sandy-loam-filled mesocosms together with red clover (Trifolium pratense) at low soil nitrogen (N) level (5 g N m-2, respectively) for a period of three cuttings
18%

 
 

Kettunen et al. (2007a)
Harvested biomass of plants grown within thermo-controlled greenhouses in sandy-loam-filled mesocosms together with red clover (Trifolium pratense) at moderate soil nitrogen (N) level (10 g N m-2, respectively) for a period of three cuttings
22%

 
 

Kettunen et al. (2007b)
Aboveground biomass of plants grown from seed in sandy-soil-filled mesocosms located within greenhouses for a period of 3.5 months at low (half-standard) soil nitrogen supply
7%

 
 

Kettunen et al. (2007b)
Aboveground biomass of plants grown from seed in sandy-soil-filled mesocosms located within greenhouses for a period of 3.5 months at moderate (standard)soil nitrogen supply
12%

 
 

Kettunen et al. (2007b)
Aboveground biomass of plants grown from seed in sandy-soil-filled mesocosms located within greenhouses for a period of 3.5 months at high (1.5 times standard) soil nitrogen supply
7%

 
 

Kettunen et al. (2007b)
Belowground biomass of plants grown from seed in sandy-soil-filled mesocosms located within greenhouses for a period of 3.5 months at low (half-standard) soil nitrogen supply
23%

 
 

Kettunen et al. (2007b)
Belowground biomass of plants grown from seed in sandy-soil-filled mesocosms located within greenhouses for a period of 3.5 months at moderate (standard)soil nitrogen supply
22%

 
 

Kettunen et al. (2007b)
Belowground biomass of plants grown from seed in sandy-soil-filled mesocosms located within greenhouses for a period of 3.5 months at high (1.5 times standard) soil nitrogen supply
34%

 
 

Saebo and Mortensen (1995)
Plants grown from seed in 20-cm-deep boxes in field within open-top chambers in cool climate; cv Bodin
-25%

 
 

Saebo and Mortensen (1995)
Plants grown from seed in 20-cm-deep boxes in field within open-top chambers in cool climate; cv Grindstad
-18%

 
 

Saebo and Mortensen (1995)
Plants grown from seed in 20-cm-deep boxes in field within open-top chambers in cool climate; cv Forus
12%

 
 

Wolf et al. (2010)
Leaf biomass of well watered and fertilized plants grown from seed for sixty days in pots placed within growth chambers
44%

 
 

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