300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Mixed Community of the legume white clover (Trifolium repens L.) and C4 buffalo grass (Stenotaphrum secundatum (Walt.) Kuntze)
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300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
6
|
|
|
| Arithmetic Mean |
23.5%
|
|
|
| Standard Error |
5.2%
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|
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Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Edwards et al. (2005) |
Well-watered plants (initially equal in plantlet size, number and distribution) grown for 15 months in sand in large plastic containers in two greenhouses maintained at different atmospheric CO2 concentrations under sand nutrient conditions of zero N/low P, during which time 10 separate harvests were made of all plant biomass above a height of 5 cm above the sand surface; whole plant all harvests
|
9%
|
|
|
|
Edwards et al. (2005) |
Well-watered plants (initially equal in plantlet size, number and distribution) grown for 15 months in sand in large plastic containers in two greenhouses maintained at different atmospheric CO2 concentrations under sand nutrient conditions of zero N/high P, during which time 10 separate harvests were made of all plant biomass above a height of 5 cm above the sand surface; whole plant all harvests
|
26%
|
|
|
|
Edwards et al. (2005) |
Well-watered plants (initially equal in plantlet size, number and distribution) grown for 15 months in sand in large plastic containers in two greenhouses maintained at different atmospheric CO2 concentrations under sand nutrient conditions of plus N/high P, during which time 10 separate harvests were made of all plant biomass above a height of 5 cm above the sand surface; whole plant all harvests
|
13%
|
|
|
|
Edwards et al. (2005) |
Well-watered plants (initially equal in plantlet size, number and distribution) grown for 15 months in sand in large plastic containers in two greenhouses maintained at different atmospheric CO2 concentrations under sand nutrient conditions of zero N/low P, during which time 10 separate harvests were made of all plant biomass above a height of 5 cm above the sand surface; whole plant final harvest
|
24%
|
|
|
|
Edwards et al. (2005) |
Well-watered plants (initially equal in plantlet size, number and distribution) grown for 15 months in sand in large plastic containers in two greenhouses maintained at different atmospheric CO2 concentrations under sand nutrient conditions of zero N/high P, during which time 10 separate harvests were made of all plant biomass above a height of 5 cm above the sand surface; whole plant final harvest
|
49%
|
|
|
|
Edwards et al. (2005) |
Well-watered plants (initially equal in plantlet size, number and distribution) grown for 15 months in sand in large plastic containers in two greenhouses maintained at different atmospheric CO2 concentrations under sand nutrient conditions of plus N/high P, during which time 10 separate harvests were made of all plant biomass above a height of 5 cm above the sand surface; whole plant final harvest
|
20%
|
|
|