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. 2004 Oct 28;94(6):819–830. doi: 10.1093/aob/mch209

Table 1.

Characteristics of the three different environmental conditions where the seedlings of H. courbaril were grown

Environment
R : FR*
Air humidity (%)
PPFD (µmol m−2 s−1)
Air temperature (°C)
Greenhouse 1·2 59 ± 19 670 28 ± 6
Growth room 1·4 61 ± 18 194 23 ± 2
Forest 0·5 76 ± 10 22 22 ± 2
*

Red-to-far red ratio measured at the same time as PPFD.

PPFD (photosynthetically active photon flux density) measured at about 1200 h.

The forest environment also showed sunflecks within the range 200–700 μmol m−2 s−1 PPFD.