July 2024 - 31

CEA
of spread per every three units of throw. This rule is
true regardless of the angle.
We recommend using the perpendicular
airflow (Figure 3). Hybrid-angle airflow (Figure 4)
is acceptable, but parallel airflow (Figure 2) is
unacceptable because it results in a significant
portion of air velocity missing the canopy. The
symbol > illustrates the source of airflow, which is
connected to a recirculation fan or air ducted from
outside the canopy.
Perpendicular airflow, as shown in Figure 3,
demonstrates the most efficient method for achieving
CV. With airflow perpendicular
to the canopy, overventilation is
unnecessary. The distance from
the air delivery source to the
canopy is uniform and achieves
adequate ventilation in the
far-reaching areas. Here, all the
canopy areas will have a near
equal LST, and the air is 100%
effective for ventilation.
Compared with the method
of Figure 4, the total air volume
is significantly lower. However,
overhead space for ductwork is
required to deliver ventilation
air from outside the canopy.
The distance between lighting
and canopy varies depending
on the crop and the stage of
growth. When ventilation airflow
is perpendicular to the canopy
and at the level of lighting, as
in Figure 3, there is a short and
uniform distance from the air
source to the canopy.
The primary rule for efficient
ventilation is to design a system
with uniform distance between
the air source and the canopy it
serves, with sufficient velocity
to penetrate and effectively
ventilate the canopy.
Hybrid-angle airflow, as
shown in Figure 4, offers
an acceptable method for
achieving CV. The traveling
distance to the farthest point is
greater, so we need to provide
over-ventilation closer to the
source to ensure adequate
Figure 4. Hybrid-angle airflow requires overventilation closer to
the source.
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GREENHOUSE PRODUCT NEWS 31

http://www.ECGrowers.com

July 2024

Table of Contents for the Digital Edition of July 2024

Table of Contents
Editor's Report | Summertime decisions
Lighting Research | Supplemental lighting strategies
Technology | Transforming with automation
CAST 2024 | Remarkable releases for 2025
CEA | The importance of canopy ventilation
Climate Control | Enhancing greenhouse management
Special Advertising Section | Grower's Guide: Professional Growing Media and Biologicals
Variety Information | New take on smooth hydrangeas
Big Grower | Hydroponic farming
Product Showcase
Plant Health | Setting ground rules
Forty Under 40 Perspectives | Turning a lifelong education into a business
Culture Report | Grama grass
Technically Speaking | Why crops don't flower (on time)
Product Marketplace
Industry News/Events
Classifieds/Ad Index
July 2024 - 1
July 2024 - 2
July 2024 - Table of Contents
July 2024 - Editor's Report | Summertime decisions
July 2024 - 5
July 2024 - Lighting Research | Supplemental lighting strategies
July 2024 - 7
July 2024 - 8
July 2024 - 9
July 2024 - 10
July 2024 - 11
July 2024 - Technology | Transforming with automation
July 2024 - 13
July 2024 - 14
July 2024 - 15
July 2024 - CAST 2024 | Remarkable releases for 2025
July 2024 - 17
July 2024 - 18
July 2024 - 19
July 2024 - 20
July 2024 - 21
July 2024 - 22
July 2024 - 23
July 2024 - 24
July 2024 - 25
July 2024 - 26
July 2024 - 27
July 2024 - CEA | The importance of canopy ventilation
July 2024 - 29
July 2024 - 30
July 2024 - 31
July 2024 - 32
July 2024 - 33
July 2024 - Climate Control | Enhancing greenhouse management
July 2024 - Special Advertising Section | Grower's Guide: Professional Growing Media and Biologicals
July 2024 - A2
July 2024 - A3
July 2024 - A4
July 2024 - A5
July 2024 - A6
July 2024 - A7
July 2024 - A8
July 2024 - A9
July 2024 - A10
July 2024 - A11
July 2024 - A12
July 2024 - A13
July 2024 - A14
July 2024 - A15
July 2024 - A16
July 2024 - Variety Information | New take on smooth hydrangeas
July 2024 - 36
July 2024 - 37
July 2024 - 38
July 2024 - 39
July 2024 - 40
July 2024 - Big Grower | Hydroponic farming
July 2024 - 42
July 2024 - 43
July 2024 - 44
July 2024 - 45
July 2024 - 46
July 2024 - Product Showcase
July 2024 - Plant Health | Setting ground rules
July 2024 - 49
July 2024 - 50
July 2024 - 51
July 2024 - Forty Under 40 Perspectives | Turning a lifelong education into a business
July 2024 - 53
July 2024 - Culture Report | Grama grass
July 2024 - 55
July 2024 - 56
July 2024 - 57
July 2024 - Technically Speaking | Why crops don't flower (on time)
July 2024 - 59
July 2024 - Product Marketplace
July 2024 - 61
July 2024 - 62
July 2024 - 63
July 2024 - 64
July 2024 - Industry News/Events
July 2024 - Classifieds/Ad Index
July 2024 - 67
July 2024 - 68
https://www.nxtbook.com/greatamericanmediaservices/GPN/new-varieties-digital-guide-2025
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/2024-guide-to-cannabis-production
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-december-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/october-2023
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
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
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/december-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-november-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/october-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-september-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/californiaspringtrials-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-march-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/undercontrol-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2019
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2019
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