August 2024 - 22
CEA
For Michigan ornamental growers, LED
grow lights make the most sense for those
who propagate plants during the winter and
early spring, and those who produce crops that
are shipped to the South for early market sales.
Photo courtesy of A.J. Both, Rutgers University.
If a grower is operating 1,000-watt LED grow lights, and
the lights are operated at 500 watts, the grower is only
using half the electricity. "
Higgins said many ornamental growers won't spend the
extra money to make lights dimmable.
" The trend is every light has to be dimmable in order to
be salable, " he said. " There is an additional expense to dim
the lights. Either a hard wire has to be run back to a control
panel that has been set up for dimming, or a grower has to
purchase a device to run the lights wirelessly. "
Another potential feature that Higgins sees coming is
the addition of far-red light to the grow light spectrum.
" In another two years I expect LED grow lights will have
the ability to manage far-red light, " he said. " This will
enable growers to turn off the PAR (photosynthetically
active radiation) light and only deliver far-red light. PAR
light is photosynthetic light. Far-red light controls plant
morphology by helping to determine internode length. "
The benefit of adding far-red light is crop specific.
" In the case of strawberries and cucumbers, being able
to elongate the stems can be beneficial, " he said. " Addition
of far-red light can allow strawberries to grow out of the
22
AUGUST 2024 GPNMAG.COM
crown of the plant so that there is less chance of Botrytis
infection and enables the fruit to hang away from the
plants so it is easier to harvest. The improved plant
structure also allows for more airflow around the fruit
so there is less chance for Botrytis to develop. "
Far-red light is the light humans can't see, but
plants perceive.
" Far-red light does things to regulate leaf size or
leaf area and influences the architecture or shape of a
plant, sometimes in positive ways, sometimes in negative
ways, " Runkle said. " There is the potential to increase
overall photosynthesis which could result in larger
leaves. The advantage to producing larger leaves is the
potential to capture more sunlight or more light from
the grow lights, which could increase growth, flowering
and fruiting. "
For more information call HortAmericas at 469-532-2383, or
visit hortamericas.com. Erik Runkle, Michigan State University,
Department of Horticulture, runkleer@msu.edu; canr.msu.edu.
David Kuack is a freelance technical writer in Fort Worth, Texas.
He can be reached at dkuack@gmail.com.
http://www.hortamericas.com
http://canr.msu.edu
http://www.GPNMAG.COM
August 2024
Table of Contents for the Digital Edition of August 2024
Table of Contents
Editor's Report | Are you controlling?
Production | Savvy sanitation protocols
Variety Information | A need for natives
Editors' Picks | Green goods: Editors' picks from Cultivate'24
CEA | LED lighting
Great Lakes EXPO | Gearing up for EXPO 2024
Forty Under 40 Perspectives | Inventory management in the nursery
Culture Report | Roselilies
Technically Speaking | Extended photosynthetically active radiation
SGAFT | Geometry: Small greenhouse surface area distribution
AmericanHort | Plug & Cutting: Focused on young plants
Product Marketplace
Industry News
Events
Classifieds/Ad Index
August 2024 - Table of Contents
August 2024 - 2
August 2024 - 3
August 2024 - Editor's Report | Are you controlling?
August 2024 - 5
August 2024 - Production | Savvy sanitation protocols
August 2024 - 7
August 2024 - 8
August 2024 - 9
August 2024 - 10
August 2024 - 11
August 2024 - Variety Information | A need for natives
August 2024 - 13
August 2024 - Editors' Picks | Green goods: Editors' picks from Cultivate'24
August 2024 - 15
August 2024 - CEA | LED lighting
August 2024 - 17
August 2024 - 18
August 2024 - 19
August 2024 - 20
August 2024 - 21
August 2024 - 22
August 2024 - 23
August 2024 - Great Lakes EXPO | Gearing up for EXPO 2024
August 2024 - 25
August 2024 - Forty Under 40 Perspectives | Inventory management in the nursery
August 2024 - 27
August 2024 - Culture Report | Roselilies
August 2024 - 29
August 2024 - 30
August 2024 - 31
August 2024 - Technically Speaking | Extended photosynthetically active radiation
August 2024 - 33
August 2024 - 34
August 2024 - 35
August 2024 - SGAFT | Geometry: Small greenhouse surface area distribution
August 2024 - 37
August 2024 - 38
August 2024 - 39
August 2024 - AmericanHort | Plug & Cutting: Focused on young plants
August 2024 - 41
August 2024 - Product Marketplace
August 2024 - 43
August 2024 - 44
August 2024 - 45
August 2024 - Industry News
August 2024 - 47
August 2024 - Events
August 2024 - 49
August 2024 - Classifieds/Ad Index
August 2024 - 51
August 2024 - 52
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https://www.nxtbook.com/greatamericanmediaservices/GPN/2023-guide-to-hemp-production
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https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2023
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https://www.nxtbook.com/greatamericanmediaservices/GPN/2023-guide-to-cannabis-production
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-december-2022
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https://www.nxtbook.com/greatamericanmediaservices/GPN/gpn-new-varieties-digital-guide-2023
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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
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/californiaspringtrials-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-march-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/cannabisguide-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/hempguide-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2020
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