Carbon Dioxide Injection

Carbon Dioxide Fertilization

Energy Relationship of Photosynthesis and Respiration Carbohydrate Respiration Photosynthesis CO + H O 2 2 2 O 1_2 LOW HIGH Energy 2H + 2H + 2 O 1_2

C 3 - Photosynthesis

Carbon Dioxide and Plants
Atmospheric CO 2 is the source of all carbon accumulation in plants
C3 plants benefit significantly from increased CO 2 concentration in the greenhouse.
Carbon Dioxide Fertilization is common practice in many ornamental and food crop commercial greenhouse operations

Effect of CO 2
Shifts the activity of RUBISCO in favor of the carboxylation reaction
On average yields should increase by 33% with a doubling of CO 2
That average based on entire plant life cycle, but increases in growth result in juvenile and mature tissues when CO 2 levels are increased.

Carbon Dioxide Fertilization
Normally present at about 300 ppm
During daylight hours CO 2 may be rapidly depleted during crop production
Depletion may be exacerbated during winter production when there is less ventilation

CO 2 Greenhouse Levels
1,000 ppm or more have shown to increase tomato yields economically
However, you must adjust based on plant maturity and environmental conditions
Bright, sunny weather 1000 ppm
Cloudy weather 750 ppm
Young plants 700 ppm
During moderate ventilation 350-400 ppm
Less needed as temperature and ventilation rates increase

Producing CO 2 for Commercial Greenhouse Production
Natural Gas
Propane
Flue gases from hot water boiler
Compressed CO 2

Other Impacts
Increased sugars (fruit crops)
Reduced acid:sugar ratio (fruit crops)
Taste improvement noticeable by consumers (fruit crops)
Improved growth rates (fruit and ornamental)
Shorter times to flowering for certain ornamental crops.

Impacts on Sustainable Design
Heat and carbon dioxide are also released as part of the composting process
Pilot tested at the New Alchemy Institute in Massachusetts.
Potential for these system exists, but rare on a commercial scale.

Good Sources of Information
http://www.ces.ncsu.edu/depts/hort/greenhouse_veg/gtp_pages/co2.html
Trembley and Gosselin. 1998. Effect of carbon dioxide and light. HortTechnology. 8(4).
http://oregonstate.edu/Dept/NWREC/tomatogh.htm
http://www.ejpau.media.pl/series/volume4/issue2/horticulture/art-03.html
http://www.attra.org/attra-pub/ghveg.html

http://hor134.blogspot.com	1451
http://hor134.blogspot.in	17
http://translate.googleusercontent.com	17
http://www.slideshare.net	12
http://irissolar.com	9
http://hor134.blogspot.co.uk	9
http://hor134.blogspot.it	7
http://hor134.blogspot.ca	6
http://hor134.blogspot.com.br	5
http://hor134.blogspot.com.es	5
http://hor134.blogspot.com.au	5
http://hor134.blogspot.mx	3
http://74.6.239.84	1
https://s7-eu.ixquick-proxy.com	1
http://s12-us2.ixquick-proxy.com	1
http://209.85.135.132	1
http://207.46.192.232	1
http://66.102.9.104	1
http://hor134.blogspot.pt	1
http://hor134.blogspot.co.nz	1

Carbon Dioxide Injection

by buddy.tignor on Nov 29, 2007

Accessibility

Categories

Tags

Upload Details

Usage Rights

20 Embeds 1,554

Statistics

Carbon Dioxide Injection — Presentation Transcript