300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Striga hermonthica [Purple Witchweed]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
1
|
|
|
| Arithmetic Mean |
-65%
|
|
|
| Standard Error |
0%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Watling and Press (1997) |
S. hermonthica, a parasitic C3 weed that affects grain crops, was allowed to infect sorghum for two months in controlled environment cabinets
|
-65%
|
|
|