Table 3
Table 3. Average photosynthetic active photon flux density (PPFD, in μmol m-2 s-1) and air temperature (˚C) for selected days for which leaf gas exchange data are shown. The values are based on measured data made between 10:00am to 6:00pm local time. Included in parentheses are the standard deviations of the data. |
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Date |
PPFD(μmol m-2 s-1) |
Air temperature(˚C) |
22 Jun. 2001 |
1665 (321) |
27.2 (1.3) |
25 Aug. 2001 |
1653 (231) |
36.6 (0.9) |
24 Sep. 2001 |
1718 (220) |
21.4 (2.0) |
25 Sep. 2001 |
1708 (161) |
24.7 (1.8) |
NDSU Central Grasslands Research Extension Center |
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