Accuracy of quantum sensors measuring yield photon flux and photosynthetic photon flux.

  title={Accuracy of quantum sensors measuring yield photon flux and photosynthetic photon flux.},
  author={Charles Barnes and Theodore W. Tibbitts and Jeremy Sager and Gerald F. Deitzer and David L. Bubenheim and G. Koerner and Bruce Bugbee},
  journal={HortScience : a publication of the American Society for Horticultural Science},
  volume={28 12},
  • C. Barnes, T. Tibbitts, B. Bugbee
  • Published 1 December 1993
  • Physics, Environmental Science
  • HortScience : a publication of the American Society for Horticultural Science
Photosynthesis is fundamentally driven by photon flux rather than energy flux, but not all absorbed photons yield equal amounts of photosynthesis. Thus, two measures of photosynthetically active radiation have emerged: photosynthetic photon flux (PPF), which values all photons from 400 to 700 nm equally, and yield photon flux (YPF), which weights photons in the range from 360 to 760 nm according to plant photosynthetic response. We selected seven common radiation sources and measured YPF and… 

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