300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Castanea sativa P. Mill. [Sweet Chesnut]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
4
|
|
|
| Arithmetic Mean |
12.8%
|
|
|
| Standard Error |
2.2%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
El Kohen et al. (1993) |
ventilated mini-greenhouses
|
17%
|
|
|
|
Mousseau (1993) |
greenhouses, first year
|
16%
|
|
|
|
Mousseau (1993) |
greenhouses, second year
|
12%
|
|
|
|
Mousseau (1993) |
greenhouses, third year
|
6%
|
|
|