How do increased CO2 levels affect plant growth?

already exists.

Would you like to merge this question into it?

already exists as an alternate of this question.

Would you like to make it the primary and merge this question into it?

exists and is an alternate of .

Plants grow better with higher CO2. In fact, most botanists agree that CO2 is the single most limiting factor in plant growth and reproduction. Researchers have artificially increased CO2 levels in greenhouses up to 10 times the normal atmospheric levels, with no diminishing returns in plant growth. A different view Higher CO2 levels help some plants in controlled environments, such as greenhouses. In natural environments, the growth is temporary with plants either returning to previous levels or decreasing. See Related Links for source.  Rebuttal Higher CO2 levels help all plants, in all environments. Growth increases are temporary only when the CO2 increase is temporary.
Your "source" contains a lot of "ifs" and "maybes" - truth is, all it does is raise conjectures about how growth MAY be limited in some cases.
C4 Plants - True, they have a mechanism for "fixing" carbon dioxide. But the more carbon dioxide in the atmosphere, the more they can "fix". Furthermore, the vast majority of the world's plant biomass is C3, not C4. The only crops that are C4 are corn, sorghum, sugarcane, and millet (with only corn being a major crop). C3 crops include soybeans, all small grains (wheat, barley, oats, rye), and the most important food crop in the world, rice. Additionally, even the C4 plants can be bio-engineered to be C3 plants.
Tropics - While it MAY be true that increased CO2 will be less beneficial in the tropics than in temperate regions, the vast majority of crops are grown in the temperate regions. So this is not an issue.
Overall, your source is a very poor attempt to counter the established and accepted scientific knowledge that higher carbon dioxide levels are beneficial to crops.
15 people found this useful

What is causing the increase of CO2 levels?

There are a number of things that are causing the increase of CO2levels. The production processes and transportation are the maincauses which will emit high levels of carbon d

What are the minimum levels of CO2 needed for plant growth? . The amount of carbon dioxide a plant requires to grow may vary from plant to plant, but tests show that most plants wil

Does pH levels affect plant growth?

yes, if the pH level is 7 its neutral aka water any higher it is a base any lower it is a acid Better research it your self bcuz i am having problems finding the answer too

Why do CO2 levels increase over time?

The Carbon/CO2 on earth is part of a natural cycle which balances the CO2 in the atmosphere with the carbon locked in the rocks as limestones, and hydrocarbons. In general ove

How does CO2 affect pH levels?

CO 2 dissolves in water and forms H 2 CO 3 , a weak acid. Therefore, the presence of CO 2 will lower the pH slightly from its previous level.

Why are the levels of CO2 in the atmosphere increasing?

Humans continue to burn fossil fuels (coal, oil and natural gas) in industry, travel and to generate electricity. This releases extra carbon from millions of years ago. T
In Global Warming

Would plants increase CO2 in the air?

Awesome catch! CO2 is produced in very massive amounts by dead plants. As a interesting note, dead and decaying plants produce far more CO2 then man. Many time that of man!
In Botany or Plant Biology

Why does the level you plant a seed affect the growth?

If a seed is planted too deep into the ground, water can't get to it and the soil won't have a lot of nutrients deep in the ground for the seed to grow affectively. Thanks!
In Environmental Issues

Why there is a increase in the Earths CO2 level?

One city, Shanghai China, is fueled by 17 [dirty from sulphur] coal-fired power plants. Buses, elevators and the daily need for World-Wide hotel and motel sheet laundry is