CO2 Enrichment: Difference between revisions
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[[File:Horse manure greenhouse.jpg|thumb|right|500px|Horse manure used for CO2 enrichment in a greenhouse. Picture taken | [[File:Horse manure greenhouse.jpg|thumb|right|500px|Horse manure used for CO2 enrichment in a greenhouse. Picture taken at [http://www.siebenlinden.de/index.php?id=1&L=2 Ecovillage Sieben Linden, Germany].]] | ||
While the average ambient CO2 concentration in the atmosphere is now (2016) about 400 ppm, in a greenhouse it can be increased much further to improve plant growth. Concentrations of 1000-1200 ppm or even up to 1500ppm are used in commercial greenhouse operations. Above this level, dangerous toxic effects to the crops and workers are more likely to occur. This enrichment has dramatic positive effects on crop productivity (doubling or tripling) and potential advantages in water use (due to changes in plant transpiration with lower water losses). Various CO2 sources are available, such as [[biogas]] or [[compost]] which provide very clean CO2. Some [[pyrolysis]] methods (for [[biochar]] production) are also very clean and could be considered as well. | While the average ambient CO2 concentration in the atmosphere is now (2016) about 400 ppm, in a greenhouse it can be increased much further to improve plant growth. Concentrations of 1000-1200 ppm or even up to 1500ppm are used in commercial greenhouse operations. Above this level, dangerous toxic effects to the crops and workers are more likely to occur. This enrichment has dramatic positive effects on crop productivity (doubling or tripling) and potential advantages in water use (due to changes in plant transpiration with lower water losses). Various CO2 sources are available, such as [[biogas]] or [[compost]] which provide very clean CO2. Some [[pyrolysis]] methods (for [[biochar]] production) are also very clean and could be considered as well. | ||
Revision as of 23:26, 22 July 2016
Horse manure used for CO2 enrichment in a greenhouse. Picture taken at Ecovillage Sieben Linden, Germany.
While the average ambient CO2 concentration in the atmosphere is now (2016) about 400 ppm, in a greenhouse it can be increased much further to improve plant growth. Concentrations of 1000-1200 ppm or even up to 1500ppm are used in commercial greenhouse operations. Above this level, dangerous toxic effects to the crops and workers are more likely to occur. This enrichment has dramatic positive effects on crop productivity (doubling or tripling) and potential advantages in water use (due to changes in plant transpiration with lower water losses). Various CO2 sources are available, such as biogas or compost which provide very clean CO2. Some pyrolysis methods (for biochar production) are also very clean and could be considered as well.
Open Source Hardware Needs
- CO2 sensors
- pipes, fans