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Is PAR really 400-700 nm? The McCree Curve Revisited with evidence ePAR should be the new standard.

Dr. Bruce Bugbee breaks down the latest evidence that the officially recognized PAR (aka PPFD) range of 400-700 nm should be revised to include far-red photons up to 750 nm. The traditional photosynthetically active radiation range was defined based on research by Dr. Keith McCree and other scientists and has been the standard for measuring plant lighting efficacy for over 50 years. Should the new "ePAR" (extended PAR) range become the new standard? Check out the newest evidence and implications presented in this video and judge for yourself. Learn more about translating PAR measurements to ePAR measurements here: https://cdn7.bigcommerce.com/s-0oei9z... ------ Follow us to see all the cool ways our products are being used, as well as to get notices for free classes, how-to videos, and product announcements! -Case Studies https://www.apogeeinstruments.com/cas... -Facebook / apogeeinstru. . -Twitter / apogeeinst -LinkedIn / 1084851 -Instagram / apogee_inst. .

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