The discussions reflect a balanced curiosity and support for scientific findings, with participants citing specific threshold levels such as 900 ppm being optimal for crop growth, emphasizing a view that increased CO₂ can enhance plant biomass. Words like 'optimal,' 'beneficial,' and references to greenhouse techniques highlight a tone of scientific inquiry and potential environmental optimism, though some debates about implications for climate change suggest cautious consideration.
AgreementModerate agreement
Most discussions acknowledge the findings of the publication, recognizing that optimal CO₂ levels for plant growth are around 900-1200 ppm, with many supporting the idea that higher CO₂ levels can benefit plant biomass.
InterestHigh interest
The discussions demonstrate high interest, with many participants referencing specific studies, optimal ranges, and implications for agriculture and climate; the tone shows curiosity and engagement with the scientific data.
EngagementModerate engagement
Participants actively interpret research results, debate optimal levels, and consider ecological and practical consequences, indicating moderate to deep engagement.
ImpactModerate impact
The discussions may influence perceptions on climate and plant productivity, especially considering references to greenhouse practices and ecosystem effects, though the immediate practical impact on policy remains limited.
Abstract in brief
The study explored how different levels of atmospheric CO₂ impact the growth of three perennial grass species—tall fescue, perennial ryegrass, and Kentucky bluegrass—finding that each has a specific optimal CO₂ concentration where growth is maximized, but growth declines when CO₂ exceeds this level.
Initially, increased CO₂ enhances plant biomass through a fertilization effect, but this benefit diminishes sharply past the optimal CO₂ concentration, especially for tall fescue, which loses its growth advantage earlier than the other species.
The decline in growth at high CO₂ levels is linked to changes in photosynthesis processes, stomatal conductance, and nitrogen availability, indicating that overly high atmospheric CO₂ may limit grassland productivity and complicate climate change predictions.]
@RealPotatus @wittwer_paul @ChrisMartzWX There's copious studies done and greenhouses regularly run 1000+
Here's one I found at random, 3 different grasses grew the most at ~900ppm
https://t.co/4kpIQM7HKG
Oct 4, 2025 · 15 likes · 1,200 followersView post →
PS
POLITIK SPEZIAL
@politikspezial · X
#CO2 „verschmutzt“ nicht die Biosphäre, sondern ist für Pflanzen genauso wichtig wie für Mensch und Tier der Sauerstoff.
Gute Bedingungen haben viele Pflanzen erst ab einer Konzentration von ca. 300ppm.
@kutschera_u
https://t.co/PgCCis1zV6 https://t.co/36fiywdkGH
Oct 6, 2023 · 8 likes · 1 share · 11,142 followersView post →
SP
Steven M. Belknap, MD PGY43
@StevenMBelknap · X
@warwick512 @ravenkeeferNA @TonyClimate @UNEP @SabinCenter Now you’re just making stuff up.
Optimal CO2 for grasses is twice the current CO2.
Higher carbon dioxide levels and more irrigated pasture will give us more grass and help feed all the cattle that the growing population of carnivores will require.
https://t.co/FBlvF9wZIv https://t.co/zT1IJgQVyx
Aug 20, 2023 · 8 likes · 1 share · 2,294 followersView post →
HH
Harm Van Der Horst
@HorstvdHarm · X
@LobservateurLi2 @LucileFievet <200 ppm pas bon
800-1200 ppm optimum
>2000 ppm pas bon.
Ci dessous comment les prairies sont plus productif. Ces mêmes prairies qui ont co-évolué avec des milliards de ruminants....bien avant homo-sapiens. Quand c'est pas vert->c'est mort
https://t.co/n5pmdnLIdS
In January 2020, Klaus Schwab opened the 50th World Economic Forum. This video examines his communication techniques, the feasibility of the forum's plans, and discusses concerns about its activist agenda and potential…
In January 2020, Klaus Schwab opened the 50th World Economic Forum annual meeting. This analysis examines his communication techniques using NLP and evaluates the Forum's plans, suggesting potential activist and fascist…
@RealPotatus @wittwer_paul @ChrisMartzWX There's copious studies done and greenhouses regularly run 1000+
Here's one I found at random, 3 different grasses grew the most at ~900ppm
https://t.co/4kpIQM7HKG
Oct 4, 2025 · 15 likes · 1,200 followersView post →
N
NathanJT
@NathanJT · X
@latimeralder In some plants for financial gain, yes. However in other non-food crop plants it can screw up the Calvin cycle and thus the overall ecosystem:
https://t.co/f3wAcbHlYl
RT @APLSceptic: @wideawake_media Alarmist Psuedoscience:
"We're pumping CO2 into the atmosphere, which is heating the planet to unliveable…
Jan 22, 2025 · 1 share · 4,243 followersView post →
AC
A Very Concerned Citizen
@APLSceptic · X
@wideawake_media Alarmist Psuedoscience:
"We're pumping CO2 into the atmosphere, which is heating the planet to unliveable temperatures... There will be massive crop failure."
Empirical Science:
CO2 thermally saturates at ~ 100ppm.
https://t.co/lqBtPuhFFD
Plant Growth
https://t.co/RicM8kvIGJ https://t.co/XLzZ6U8IRo
Jan 22, 2025 · 2 likes · 1 share · 771 followersView post →
GT
Geoff Stanley. 05/03/61 #TakeoutTheTyrants!
@GeoffStanley17 · X
@NarrowboatSoph CO2 levels Globally and Hemispherically Fluctuate like the weather currently estimated at 0.04% up from apx 0.03% over last 5 Years, the Optimal level for growth (In ALL Life) would be around 0.05%? There are many Peer Reviewed and Published articles eg: https://t.co/eXKgyez87w
@FillmoreWhite @UkPolitoons @PeterDClack @GretaThunberg @Ed_Miliband I've studied it more than you apparently. Stop being ridiculous and making up spurious claims that your data doesn't support.
https://t.co/j2jeIUKgIT
RT @SteveWMorrissey: @CO2Coalition What the optimal CO2 level should be is a good question. An optimal concentration for grass growth seem…
Nov 19, 2024 · 2 shares · 1,979 followersView post →
CS
Camburn Shephard
@Camburnclimate · X
RT @SteveWMorrissey: @CO2Coalition What the optimal CO2 level should be is a good question. An optimal concentration for grass growth seem…
Nov 19, 2024 · 2 shares · 1,959 followersView post →
SM
Steve Morrissey
@SteveWMorrissey · X
@CO2Coalition What the optimal CO2 level should be is a good question. An optimal concentration for grass growth seems to be over 900 ppm.
https://t.co/s5j1xDgPWp
Nov 18, 2024 · 2 likes · 2 shares · 30 followersView post →
TM
Toad Qui Est Mutant
@mutanttoad · X
@NyaPfanner Optimal CO2 level around 950
https://t.co/X4ixAWz70b
Aug 15, 2024 · 4 likes · 3,893 followersView post →
WR
Werner Wolfgang Reinhardt
@WernerReinhard5 · X
@elonmusk @Rothmus I hate to disagree, but, that's incorrect.
https://t.co/3296PicXHk
&
https://t.co/Mhjnp5LtJn
&
https://t.co/bJzGxqo62a
&
https://t.co/BCrRnvuoGd
&
1,200 to 1,500 is considered optimal for life on
Aug 13, 2024 · 1 like · 1 share · 2,641 followersView post →
J
JustAnotherRobot
@ShorterboyMs · X
@SamDunn93 @newscientist so genius how much CO2 is required for optimal growth of rain-forest flora.. also at what level does the lack of CO2 kill rain-forest flora, here is grass to help you get started https://t.co/lt9KDS4P93
@BuergerunNormal @lange_tobias_hh hier wurden nur 3 gräser getestet. aber alle drei brauchen mindestens das doppelte and co2 für idealen wachstum.
für die doofen hier, wenn man also mehr co2 hat, wachsen pflanzen besser, heist verbrauchen mehr.
die natur wird das schon ausgleichen!
https://t.co/VnQp2rou8z https://t.co/xnU85EGUoX
"CO2 fertilization effect" "We found that the optimal CO2 concentrations occurred at 945, 915, and 1151 ppm for the aboveground biomass of tall fescue, perennial ryegrass, and Kentucky bluegrass" https://t.co/VdNuy3sJ03
May 10, 2024 · 2 likes · 7,156 followersView post →
@Magnus_Veritas @nioplugxpev @bennyjohnson The amount of optimal CO2 is different for every type of plants but this paper recommends 945, 915 and 1151 for the 3 types of plants they tested, so more or less 1000ppm on average.
https://t.co/TYlaDF82ar
Mar 30, 2024 · 1 like · 2,410 followersView post →
L
Lecturer
@lecturering · X
@sarthakgh Carbon emissions don't matter. When CO2 hit 400ppm, most of its climatic effects were done already because they decrease exponentially. More CO2 now means better farming because it's a natural fertilizer. Optimal for plants is about 900-1200ppm. https://t.co/hu2te6kTdZ
@haley_ps @RpsAgainstTrump here are a list of references:
Evidence of the past 500 Millions years of CO2:
https://t.co/19Zs0LGtKQ
Evidence of Current Levels being 400: https://t.co/GSDEFvBBOL
Evidence of Optimum Levels: https://t.co/eCdSMBTpv2…
Evidence of Plant Death at low levels:
@Thorsstone @krassenstein Evidence of Plant Death at low levels:
https://t.co/v7h5RwEPCT
Evidence of Optimum Levels:
https://t.co/eCdSMBTpv2
Evidence of Current Levels being 400:
https://t.co/I2BAolFGoA
Evidence of the past 500 Millions years of CO2:
https://t.co/19Zs0LGtKQ https://t.co/fzTH0Po2aM
RT @politikspezial: #CO2 „verschmutzt“ nicht die Biosphäre, sondern ist für Pflanzen genauso wichtig wie für Mensch und Tier der Sauerstoff…
Oct 7, 2023 · 1 share · 1,877 followersView post →
PS
POLITIK SPEZIAL
@politikspezial · X
#CO2 „verschmutzt“ nicht die Biosphäre, sondern ist für Pflanzen genauso wichtig wie für Mensch und Tier der Sauerstoff.
Gute Bedingungen haben viele Pflanzen erst ab einer Konzentration von ca. 300ppm.
@kutschera_u
https://t.co/PgCCis1zV6 https://t.co/36fiywdkGH
Oct 6, 2023 · 8 likes · 1 share · 11,142 followersView post →
PS
POLITIK SPEZIAL
@politikspezial · X
#CO2 „verschmutzt“ nicht die Biosphäre, sondern ist für Pflanzen genauso wichtig zum Überleben wie für Mensch und Tier der Sauerstoff.
Gute Bedingungen haben viele Pflanzen erst ab einer Konzentration vonca. 300ppm.
@kutschera_u
https://t.co/PgCCis1zV6 https://t.co/36fiywdkGH
@RozekTom @Nature A bez CO2 fotosynteza będzie działać ? Aktualne stężenie CO2 to 400 ppm. Optymalny poziom dla roślin to 1000 ppm. https://t.co/6eyC4bJSEj
@warwick512 @ravenkeeferNA @TonyClimate @UNEP @SabinCenter Now you’re just making stuff up.
Optimal CO2 for grasses is twice the current CO2.
Higher carbon dioxide levels and more irrigated pasture will give us more grass and help feed all the cattle that the growing population of carnivores will require.
https://t.co/FBlvF9wZIv https://t.co/zT1IJgQVyx
Aug 20, 2023 · 8 likes · 1 share · 2,294 followersView post →
HH
Harm Van Der Horst
@HorstvdHarm · X
@Gregdt1 @Climeworks what a waste of money, manpower, engineering and natural ressources that thing is.
Did you folks actually know that plants have little air inlets called stomata through which CO2 is captured? And the more CO2 enters, the more sugar is produced?
https://t.co/n5pmdnMg3q
@fabiominelli @babyspettri @durezzadelviver Per le piante in realtà la concentrazione ideale di C0₂ sembrerebbe essere maggiore di quella attuale.
https://t.co/TgzrgqpojE https://t.co/y9GbZKTi5C
@LGillon2 @factsoveragenda @wideawake_media @MePeterNicholls Your link isn't the counter argument you think it is. It actually reinforces the idea.
Also
https://t.co/in0jCmieUz
@LobservateurLi2 @LucileFievet <200 ppm pas bon
800-1200 ppm optimum
>2000 ppm pas bon.
Ci dessous comment les prairies sont plus productif. Ces mêmes prairies qui ont co-évolué avec des milliards de ruminants....bien avant homo-sapiens. Quand c'est pas vert->c'est mort
https://t.co/n5pmdnLIdS
@Gregdt1 @lemondefr Pourriez vous m'expliquer, d'un point de vue évolutionnaire, pourquoi beaucoup de plantes terrestres ont co-existé avec des ruminants (en nombre de milliards d'individus) et en produisant d'avantage de biomasse a des taux de CO2 de 800-1200 ppm?
https://t.co/n5pmdnLIdS
Les écosystèmes de prairies permanents parsemé de forets sont les systèmes ou la photosynthèse est maximalisé combiné a des taux de CO2 entre 800 et 1200 ppm. Ces systèmes existent depuis des millions d'années.
https://t.co/n5pmdnLIdS
@DavidMo66984563 @Jellyandbeany @CO2Coalition Note in the 1st link of this paper further down while there is less in the roots, there is more in the leaves. Other studies show benefits are species dependant.
https://t.co/m1Uel7WI25
The 1st link on the bean data shows higher levels in
some areas. Wider analysis better. https://t.co/W0eZnluqwn
@daisymccrackin You can check NASA’s website for the CO2 ppm data here’s a link to a study on CO2 concentrations and their impact on a variety of vegetation. You’re touting a narrative that has yet to successfully predict anything.
https://t.co/SMh8ZzIvy7
The Co2 level is 400ppm if it drops below 200ppm plants will die.
Kentucky bluegrass grows 75% faster when the CO2 increased from 400 ppm to 1000 ppm
If a plant grows 75% faster the Co2 level drops faster.
https://t.co/IMUQ0YM9R1 https://t.co/hLqqq8sPuW
You're being lied to about everything. Yes. Everything. We need more C02, not less.
https://t.co/EqkiFhSWtk
#ClimateScam #ClimateEmergency #ClimateAction
#ClimateJustice
#ClimateCrisis
#ClimateSmartUP https://t.co/xVG9RMhw8p https://t.co/nXR6ZMVDNu
@MattWin17 @TheFlatEartherr Wait until you realize greenhouse gasses (C02) is used to enhance plant growth and fruit bearing. We're fucking being lied to about everything.
https://t.co/EqkiFhSWtk https://t.co/WjO20tP0Fm
@bmdaype @IAmKarissaNoel @PamKeithFL Yes plants can change their growth cycles based on CO2, but too much CO2 is not good for them either. https://t.co/elVYaDtOCC
@pclarkins @paulalexlewis @MaximeBernier Here is a relevant article on the subject.
https://t.co/9JUy6HBGHm
They found that CO2 levels close to 1,000 ppm is optimal for certain species of plants. Higher CO2 levels also help plants survive drought conditions.
@wyldcdn This paper analyzes three grasses around today, that grow better at 900-1100 ppm. Moreover, greenhouses actually use CO2 concentrators. I don’t think they are growing plants that are extinct today.
Swab, en het WEF, de sekteleider voor onze bewindslieden.
https://t.co/sqzdXI8gm9
Sep 23, 2022 · 1 like · 1 share · 1,632 followersView post →
R
Ruth
@RuthCatrin1 · X
@BlasphemousBan1 @nycexpatmom @gov_fails I understand that. You can see the trend upward here: https://t.co/CNybtouf7D
Turns out that plants kinda like it too: https://t.co/886LX4NFpo
Xu [23] examined the optimal atmospheric CO2 concentration of the CO2 fertilization effect on the growth of winter wheat and found that the optimal atmospheric CO2 concentration was 894 and 968 ppm for total biomass and leaf photosynthesis...
https://t.co/yysoMivXgo
@tachyonspeed55 @ians_robots @SuzanneEvans1 https://t.co/sEi6J6F7SF
Above link is regarding plants in greenhouses so that it is just the CO2 levels are varied. When other variables are introduced, different results will obviously be seen. Below further experiments in variety of conditions
https://t.co/ZtXXuSjHS7
@pirogenes @Jacpoludek @sjastrzebowski I tu masz jeszcze jeden artykuł. Dla tej wrażliwej odmiany musimy podwoić dzisiejsze stężenie CO2 po to by uzyskać optimum fotosyntezy.
https://t.co/bQaQLMloC3
Analyse van hoe wereldleiders en koningen en CEO’s door #Klaus Schwab worden gemind-fucked. Een indrukwekkende uitleg van de wijze waarop taal wordt misbruikt. Deel 1 | Klaus Schwab en het World Economic Forum | Anti-fascisme of jui... https://t.co/qbatn1Onjd via @YouTube
@PieterOmtzigt Het gaat hierom; https://t.co/qbatn1Onjd. Om het verwezenlijken van bizarre woke niet onderbouwde doelen van 1 man; K.Schwab die als het nog niet bestond bij deze het fascisme had uitgevonden. De dictatuur van alle kanten links rechts you name is. D666 is hier de representant van
Deel 1 | Klaus Schwab en het World Economic Forum | Uitleg van de eenzijdige activistische feitelijk fascistische agenda. https://t.co/qbatn1Onjd via @YouTube
@annstrikje Meestal een paar dagen na de persconferentie staat er op universityofme een analyse. Best leuk leerzaam om te zien.
https://t.co/yFZcjyEcfR
@Simone_Voice Het is heel eenvoudig het sociale leven moet zoveel mogelijk weg. Als mensen niet met elkaar kunnen praten en op andere gebracht worden, zijn ze eenvoudiger tot slaaf te maken van een systeem. https://t.co/du6ySm90nQ
Mooie uitleg film. Maar wat mij zelf opvalt is dat Klaus Schwabbel niet alleen het podium op komt maar met een vrouw. Die naast hem gaat zitten. Klaus is dus een soort klein kind dat niet zonder zijn moeder kan.
Zo kijk nu de film.
https://t.co/DWehxnE6eJ
Mooi analyse van het WEF door ‘Universityofme’.
Deel 1 | Klaus Schwab en het World Economic Forum | Anti-fascisme of jui... https://t.co/XWh4jJBADM via @YouTube
Deel 2 | Klaus Schwab en het World Economic Forum | Anti-fascisme of jui... https://t.co/M9kYWqy5rN via @YouTube
Is de #WEF (World Elite Forum) een democratische (pro-burger) of aristocratische (pro-elite) support groep?
https://t.co/jKWlk3WLNx
https://t.co/4P3ac18T0G
@ockhams https://t.co/yJjQFmqZsA deze analyseert persconferenties en de manier van communiceren uit! Hier maakt hij ook een punt dat de planeet veel groener is geworden… ook deel 2 kun je bekijken op YouTube
Jan 20, 2022 · 1 like · 1,519 followersView post →
@ipeltonen @NiklasKaskeala Luin tutkimusta, jossa kasvillisuus kasvoi paremmin CO2:a lisätessä 800-1200ppm asti (riippuen kasvista). Minkä tieteellisen tiedon valossa siis ehdotat ylärajaksi 350ppm?
Kys. tutkimus https://t.co/TbzPMFyVQj
@DavidBellamyUK @PeterGleick "We found that the optimal CO2 concentrations occurred at 945, 915, and 1151 ppm for the aboveground biomass of tall fescue, perennial ryegrass, and Kentucky bluegrass, respectively." From https://t.co/y8JL3kwYvW
@GrahamGillard1 @cjtjgeol @BarbaraGirouard @lyndengill @Royalacresrod @Barbarajdurkin @SandgroperDuff @johnson_wrjohn1 @markp1950 @wadlermd @GaryWHall @FriendsOScience @RoyPentland @JsharkJill @BarelyStreetabl @MikeDel21893959 @Stockfttp @molenaarder @Barrtecforever @Veritatem2021 @MartinBrampton @dykarjohan @MarkHin83862722 @eric84701331 @weberj502 @JaggerMickOZ @drbarnesbangor @ianbrow97534170 @AndryGiles @Bill_In_DC @KeillerDon @mikeslastword @RogerBrennan17 @Cris_Paunescu @supedave70360 @BailFund_Brawl @Tangomitteckel @bulkbiker @kevpluck @jeremyjudkins @KimMcLe10081812 @LazyyReader @MhehedZherting @Michael_D_Crow @JEdward02 @ScottSantiago15 @BlknWhtKat @bazakel @ECOWARRIORSS @Tea4gunsSC The optimal level of CO2 is based upon greenhouse experiments like this one, to evaluate levels needed for ideal growth of plants/crops at both the bottom and top end of the spectrum.
https://t.co/