Hydroponics Blog
  Home
  Hydroponics
  Systems
  Environment
  Lighting
  Grow Mediums
  Nutrients
  Growth Enhancers
  Propagation
  Pest Control
  Gardening
  Smart Valve
  Smart Tray
  Articles
  Hydroponics Club
  Site Map
  More Resources
  Special Offers
  Plant
  Aeroponics
  Autopot
  Hesi
  Rockwool
  Chemical Safety
  Water Hardness
  Green Age
  Ionic
  Coco Coir Peat
  History
  Terms of Use
  Seeds
  Temperature
  Ozone
  What is pH
  H2O2
  Oxygen
  CO2
  Insect Attacks
  Drying
  UV Steriling
  Hormones
  Stresses
  Gardening
  Plant Energy
  Flowering
  Germination
  Root Callus
  Mould
  Disease Control
  Nutrient Deficiency
  Nutrient Toxicity
  Grow Room

HOW CARBON DIOXIDE (CO2) CAN KEEP YOUR PLANTS GROWING!


Carbon, Hydrogen and Oxygen make up about 90% of the dry matter in a plant. CO2 (Carbon Dioxide) in the air supplies all of the Carbon in the plant. Like animals, plants breathe in Oxygen and breathe out Carbon Dioxide all the time. The plant needs Carbon Dioxide during the hours of daylight and uses this to produce sugars. During the hours of darkness it will breathe out Carbon Dioxide, which is a waste product.

The plant uses light and Carbon Dioxide for photosynthesis. The more light there is available the greater the plantís requirement for Carbon Dioxide, It has been found that it takes about 10 photons, (quantum units of light) during photosynthesis, to create enough energy to split one Carbon Dioxide molecule into its basic components of Carbon and Oxygen and form a sugar.

Because there are trillions of photons hitting the plantís leaves, sufficient Carbon Dioxide is needed to convert their energy into sugars. If enough CO2 is not available, then the unused photons will bounce off the plantís leaves and be lost. So the more light the plant is given the more Carbon Dioxide it will need to produce its maximum yield of sugars from photosynthesis.

Plants absorb different spectrums of light in differing amounts. This light is affected in different ways by a range of factors, such as distance and percentage of reflection etc. Because any unusable light is wasted, the calculation of how much useable light the plant is getting is quite complicated. It can be measured using a special PAR meter for CO2. (PAR = Photosynthetically Active Radiation) which takes into account the lumen level of the light striking the leaves and discounts the unusable fractions of the available light.

Plants outside, in full sunlight, will get about 5000 lumens per square foot. This means that the plant could process about 2000 ppm of CO2. It is unfortunate, but the Carbon Dioxide levels outside are nowhere near this level.

Indoors, using a light level of 3000 lumens, the plant will need approximately 1500 ppm of CO2. If the light level was at 1000 lumens this would drop to around 300 ppm CO2 (city air is about 400 ppm) which is within the normal range. The lower the concentration of Carbon Dioxide the more the air has to be moved across the plantís leaves in order for it to get sufficient exchange.

It is known that if the plant has enough CO2 and enough light it will perform to its optimum, so if we increase the light levels and up the CO2 available then we can expect a good increase in growth and subsequent yield.



WANT THE LATEST NEWS ABOUT HYDROPONICS?

Receive your free hydroponics-gardening-information-club membership. Become part of a community packed with great tips, offers and news from the world of hydroponics-gardening, delivered straight to your desktop.

To get started right now while this limited offer is still available just click here and fill out our application.


Please contact us at:

Hydroponics Gardening Information
Rosedale
Moorland
Bridgwater
Somerset
TA7 0AX
United Kingdom

Telephone: (0044) 1278 691468

Office Hours 9AM to 5PM GMT
Monday to Friday

Please feel free to ask us questions or to pass comment on our site. We will always try to answer your questions promptly, however please bear with us if your request is either very technical or requires a lot of explanation.

As we are only a small team any very technical questions about equipment and or nutrients may take a little time to research, so please be patient.



Copyright © 2004 - 2005 - 2006 - 2007 J.R.Haughton.
 All Rights Reserved.


URL.biz - where people find experts

Gardens


Web www.hydroponics-gardening-information.com


Back to Top of Page