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Green House Carbon Dioxide Enhancement Supplementary Co2 Generation

The introduction of supplementary carbon dioxide into the greenhouse has been found to significantly increase the yields of greenhouse tomatoes and other vegetables. Supplementary carbon dioxide is most effective on days when the greenhouse has been shut up for several days with no ventilation. Maximum results can be achieved by injecting 1000-1500 ppm CO2 into the greenhouse using propane burners or other CO2 generators.

If ventilation is minimized and greenhouses are sealed tightly to prevent heat loss and to conserve energy, the end result can be depletion of carbon dioxide levels within the greenhouse. Plants need carbon dioxide for photosynthesis and its depletion can stunt plant growth. Like carbon dioxide, other environmental variables including water and light, need to be within acceptable ranges for photosynthesis to occur.

Either temperature, light or carbon dioxide can limit photosynthesis if they are not at the right level. Because of the high costs of heating greenhouses, energy-conscience growers have sealed greenhouses to reduce warm air leaks. This practice, while good from the energy savings point of view, can have negative consequences for plant growth. Plants that are well watered and fertilized can take advantage of the light and photosynthesize in tightly closed greenhouses.
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By doing so, the plants remove carbon dioxide from the air. Since the greenhouses are closed, carbon dioxide removed by the plants cannot be replaced by outside carbon dioxide. The result is carbon dioxide depletion and a lower photosynthetic rate. When the carbon dioxide level drops below 200 parts per million, photosynthesis stops and the plants stop growing. In this situation, energy is wasted keeping the plants warm while they are not growing.

Bellona

Too much, too fast, too soon? The future of the Arctic in the times of 'cold rush' Bellona ... devoted to reducing the environmental impact of transport, emphasised that black carbon emissions resulting from shipping have a severe impact on the Arctic due to black carbon's dual effect – CO2 greenhouse properties and absorbing sun beams.

The Unreasonable Man Mason County News The reason they need all our money is because of the evil CO2 greenhouse gas we persist in emitting into our atmosphere. Now, humans don't actually emit all that much CO2, but if you knew that you wouldn't dump your wallet into an envelope addressed to ...

LETTERS: NCT, Jan. 25, 2012 North County Times 22) recognizes only Jeffrey Bada as a scientist and claims skepticism about CO2-greenhouse gas theory is equivalent to lack of concern for the environment. I am a scientist (Ph.D. biology, UC San Diego, '73) and recently retired from a 35-year career ...

Climate Change Debate Brewing in American Classrooms Wall Street Journal (blog) Callendar argues that CO2 greenhouse global warming is underway, reviving interest in the question. Ewing and Donn offer a feedback model for quick ice age onset. Phillips produces a somewhat realistic computer model of the global atmosphere. and more »

Minneapolis Star Tribune (blog)

Sunday Thaw (first subzero by midweek, least snow since 2006) Minneapolis Star Tribune (blog) The story from The Energy Collective: "My RSS news feeds are simply bursting at the seams with the news that scientists have figured out that by concentrating on non-CO2 greenhouse-effect emissions we can get a pretty big and speedy bang for the buck. and more »

73 New APIs: AT&T, Social Analytics and Online Learning ProgrammableWeb (blog) CO2 Benchmark API: The service provides estimates of average production of CO2 greenhouse gases as an indicator of typical carbon footprints for various activities. It is intended to be used for comparison with local carbon estimates to indicate ...

Low Carbon Transport in Asia environmentalresearchweb (blog) Zusman et al. identify two main avenues: A) clean and affordable technologies for motorized vehicles that can have huge impact on improving the health of billions of Asians while also substantially reducing non-CO2 greenhouse gas emissions; ...

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