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Efficacy Of Two Hortiled Fixtures, Jakob Johnson, Paul Kusuma, Bruce Bugbee
Efficacy Of Two Hortiled Fixtures, Jakob Johnson, Paul Kusuma, Bruce Bugbee
Controlled Environments
We tested the efficacy of the Full Spectrum and Red-Blue HORTILED TOP LED fixtures manufactured by PL Light. Both fixtures had an 80° light distribution.
The efficacy of the fixtures was measured using flat plane integration as described by Nelson and Bugbee (2014)1 (see adjacent photo). The fixtures were suspended at 0.65 m above the floor in a 3 × 3 m room with flat black walls. The photosynthetic photon flux density (PPFD, μmol · m-2 · s-1) was measured with a recently calibrated quantum sensor (LI-COR model 190R). Measurements were made 2.5 cm apart near …