November December 2024 - 27

LIGHTING
INCREASED LIGHT INTENSITY FOR CANNABIS By David Kuack
Even with the increased use of agrivoltaics to generate
W
hen it comes to light intensity, cannabis
is different from other CEA crops. Bruce
Bugbee, professor of crop physiology at Utah
State University and president of Apogee Instruments,
is conducting studies delivering 2,000 micromoles of
photons to cannabis plants.
" Cannabis benefits from really high light levels, " he
said. " Other controlled-environment crops like lettuce
can't tolerate light levels as high as cannabis. "
Bugbee said cannabis yields keep increasing beyond
an economic optimum.
" Whether or not these higher light levels are an
economic optimum for cannabis, the growers have to
do the math. What's the economic value of the cannabis
versus what's the cost of the electricity? That's going to
be the case for whatever controlled-environment crop is
grown, " he said.
Bugbee expects a shift in cannabis production to more
greenhouse growing and less indoor farms.
electricity, he said greenhouses continue to be cost efficient
when it comes to the use of sunlight.
" Sunlight is free so why not take advantage of it, " Bugbee
said. LEDs in greenhouses won't be needed consistently
like in closed indoor farms, and the ability to use
lighting only when needed will greatly reduce
costs and keep production going. v
David Kuack is a freelance
technical writer in Fort
Worth, Texas. He can
be reached at
dkuack@gmail.com.
Unlike other controlled-environment crops like lettuce, when it comes to light intensity, cannabis
benefits from really high light levels. Photos courtesy of Wheatfield Gardens.
2025 GUIDE TO CANNABIS PRODUCTION 27

http://gpnmag.com/hemp_guide

November December 2024

Table of Contents for the Digital Edition of November December 2024

Table of Contents
Editor's Report | Rethinking business practices
Business Management | Insights of a changing market
Structures | How are you maximizing production space?
Variety Information | Perennials accelerate
Cannabis Guide | Production: The journey of spray-free cannabis plants
Cannabis Guide | Lighting: Increased light intensity for cannabis
Cannabis Guide | Research: What's new in greenhouse cannabis
Great Lakes EXPO | Pest control innovations at the Great Lakes EXPO
Great Lakes Expo | Schedule at a glance
Forty Under 40 Perspectives | Overlap between the practical and the economic
AmericanHort | HRI Leadership Academy: Impacting professional and personal lives
Product Marketplace
Classifieds/Ad Index
November December 2024 - 1
November December 2024 - 2
November December 2024 - Table of Contents
November December 2024 - Editor's Report | Rethinking business practices
November December 2024 - 5
November December 2024 - Business Management | Insights of a changing market
November December 2024 - 7
November December 2024 - 8
November December 2024 - 9
November December 2024 - 10
November December 2024 - 11
November December 2024 - Structures | How are you maximizing production space?
November December 2024 - 13
November December 2024 - 14
November December 2024 - 15
November December 2024 - 16
November December 2024 - 17
November December 2024 - Variety Information | Perennials accelerate
November December 2024 - 19
November December 2024 - 20
November December 2024 - 21
November December 2024 - 22
November December 2024 - 23
November December 2024 - Cannabis Guide | Production: The journey of spray-free cannabis plants
November December 2024 - 25
November December 2024 - 26
November December 2024 - Cannabis Guide | Lighting: Increased light intensity for cannabis
November December 2024 - Cannabis Guide | Research: What's new in greenhouse cannabis
November December 2024 - 29
November December 2024 - 30
November December 2024 - 31
November December 2024 - Great Lakes EXPO | Pest control innovations at the Great Lakes EXPO
November December 2024 - 33
November December 2024 - Great Lakes Expo | Schedule at a glance
November December 2024 - 35
November December 2024 - 36
November December 2024 - 37
November December 2024 - Forty Under 40 Perspectives | Overlap between the practical and the economic
November December 2024 - 39
November December 2024 - AmericanHort | HRI Leadership Academy: Impacting professional and personal lives
November December 2024 - 41
November December 2024 - Product Marketplace
November December 2024 - 43
November December 2024 - 44
November December 2024 - 45
November December 2024 - Classifieds/Ad Index
November December 2024 - 47
November December 2024 - 48
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https://www.nxtbook.com/greatamericanmediaservices/GPN/2024-guide-to-cannabis-production
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https://www.nxtbook.com/greatamericanmediaservices/GPN/new-varieties-digital-guide-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-april-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/2023-guide-to-hemp-production
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/2023-guide-to-cannabis-production
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-december-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-october-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/october-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/gpn-new-varieties-digital-guide-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-april-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/cannabisguide-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/hempguide-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/newvarieties-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/december-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-november-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/october-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-september-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-march-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/cannabisguide-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/hempguide-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/newvarieties-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/december-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-november-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/october-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-september-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2020
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https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2020
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https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-march-2020
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https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2019
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