AUTHOR=Zhen Shuyang , van Iersel Marc , Bugbee Bruce 

TITLE=Why Far-Red Photons Should Be Included in the Definition of Photosynthetic Photons and the Measurement of Horticultural Fixture Efficacy

JOURNAL=Frontiers in Plant Science

VOLUME=12

YEAR=2021

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.693445

DOI=10.3389/fpls.2021.693445

ISSN=1664-462X