Oxygen to plant roots

dennis goos dennis_goos at mindlink.bc.ca
Thu Jun 22 12:26:02 EST 1995

savidge at unb.ca ("Dr. R. A. Savidge") wrote:

>As a general rule of thumb, when O2 drops below 3% availability, anaerobic
>respiration (fermentation) predominates and roots of most species rot.  At
>garden temperatures, the solubility of O2 in water is probably never above
>3%.  Cultivating does other things besides aerating, of course.
>   Rod Savidge, PhD                 |         E-mail: savidge at unb.ca
>   Faculty of Forestry and         \|/
>      Environmental Management  \   |   /     Phone:  (506) 453-4919
>   University of New Brunswick  _\/ | \/_
>   Fredericton, NB CANADA          \|/        Fax:    (506) 453-3538
>   E3B 6C2                          |

Appreciate this informative answer. 
Next question: Is there an inexpensive & expedient way to
measure/monitor O2 availability in commercial production in soil based
outdoors orpeat-lite mixes or other cultural media as foam and


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