Turning off CO2 supply at night

by Michael Forster
(Port Macquarie, NSW, Australia)

Growers have known for a long time that supplying an elevated amount of carbon dioxide (CO2) can increase plant growth and yield. Some growers prefer to turn off their CO2 supply at night as many crops, particularly crops with C3 type photosynthesis. However, is there any proof that there are advantages to turning off and controlling CO2 levels at night?

Recently I wrote an article on 5 reasons why CO2 gas supply can be turned off at night:

http://www.edaphic.com.au/5-reasons-why-co2-levels-are-controlled-at-night/

I am interested to hear your feedback and experiences with this approach. In particular, some scientific experiments have found that yield may decrease when CO2 is not elevated at night. I am wondering if this is a common case or just an exception.

Thanks,
Michael

Comments for Turning off CO2 supply at night

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Apr 25, 2016
TURN OFF CO2 - C3 PHOTOSYNTHSIS
by: Bruce

Hey, a question, "what do you mean by C3 photosynthsis?" I'm just learning how to deal with DLI and PAR numbers, please advise?

Bruce
Brookings, OR

May 08, 2016
C3 photosynthesis
by: Anonymous

Hi Bruce,

There are three types of photosynthesis that different plant species undertake: C3, C4 and CAM. C3 is the most common type of photosynthesis.


Michael

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