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Table 1 Growth of common ragweed (number of leaves, aboveground height, fresh weight) in ambient CO2 treatment and elevated CO2 treatment

From: Effect of elevated atmospheric carbon dioxide on the allelopathic potential of common ragweed

  CO2 treatment P value
Ambient Elevated
No. of leaves 35.5 ± 3.5 45.0 ± 1.8 0.02577
Aboveground height (mm) 246.3 ± 10.3 345.8 ± 26.5 0.00205
Fresh weight (g) 4.6 ± 0.3 6.1 ± 0.5 0.02276