CARBON DIOXIDE: Fact or Fiction

Culture Orchid Doctor

by Robert M. [Bert] Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin about 4 years ago.

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Answers to questions: what is it?; is it important?; why use it?; is it safe?; does it fertilize plants?; soil fertility levels?; greenhouse temperatures?; ventilation?; checking C02 levels; crop response?; sources; purity; summary of approval; refer to OD76-107+
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More The Orchid Doctor Articles under the Heading Carbon Dioxide

Carbon Dioxide Comments
CARBON DIOXIDE: Addition to Greenhouse Atmosphere The natural slow growth of orchids equates with adequate consumption without the necessity of adding it to the atmosphere, but opinions differ. A65-388+; A65-899+ (in favor of adding it); A67-811; A79-798 (also in favor).Thin-leaved orchids and ferns supply additional C02 to thick-leaved orchids. OD71-21+ 0
CARBON DIOXIDE: Air Fertilization Data Experiments on non-orchid plants in Vermont; also on cattleyas in Tokyo; both with beneficial results; most effectively applied in the afternoon; use dry ice in coffee cans wrapped well in newspapers with cans punched with several holes in the lids; six cans to a small greenhouse. OD66-75 0
CARBON DIOXIDE: Crowded Cymbidium Plants If plants are crowded too closely together, in the daytime when they consume much more carbon dioxide than they release, then the carbon dioxide level drops rapidly, gentle air movement then is essential. AU79-37 0
CARBON DIOXIDE: Enriched Atmosphere for Cymbidiums Braemar Nursery, Santa Barbara, Cal. use two Tectol gas-fired generators and report satisfactory growth improvements; plants flower in three instead of five years; 1,200 parts to one million of air; refer to OD67-4 0
CARBON DIOXIDE: Enrichment Effects On cymbidium and cattleya seedlings and mericlones it definitely stimulates growth; normal outside concentration is about 300 ppm.; 1,000 ppm. was found best experimentally; being heavier than air it lies in a blanket five feet from the ground; top ventilation is possible in warm weather. OD67-84+ 0
CARBON DIOXIDE: Ethanol and Methanol Alcohol Burning to Heighten Carbon Dioxide Content of Air Satisfactory if burned in greenhouse in small amounts; alcohol flame is invisible by day and dangerous. A69-242 0
CARBON DIOXIDE: Ethyl Alcohol Burning Side-effect of ethylene production seems small; such burning is harmless. A66-55 0
CARBON DIOXIDE: How to Create it in a Greenhouse Burn candles or an alcohol lamp. A70-725 0
CARBON DIOXIDE: Percentages of Composition In air it is about three hundredths of one percent; plants can use greater amounts to approximately 0.5 to 1%; data not related to orchids. OR72-34 0
CARBON DIOXIDE: To Accelerate Plant Growth Orchid tests carried out in Victoria, Australia with generator resulted in 25% additional growth, with spiking six weeks earlier. OD70-214 0

New Topics

  1. William Gorski asked question Dendrobium Identification in category General Discussion
  2. Darrin Duling asked question Stenocoryne x Bifrenaria = Grex name? in category General Discussion
  3. Charles Vella started topic Orchid list Cold/Warm in category General Discussion
  4. Jan E Teitsworth asked question Can anyone identify this orchid? in category Oncidium Alliance
  5. Marianna Hynson asked question Need Help Identifying this Orchid in category General Discussion

New Comments

  1. Charles Vella commented on topic "Orchid list Cold/Warm" by Charles Vella
  2. Sandi Block-Brezner commented on topic "Brassocattleya hybrid?" by Sandi Block-Brezner
  3. Robert H. Findlay commented on topic "looking for info about an unregistered cattleya" by bob lewis
  4. james Hu commented on orchid Den. vannouhuysii
  5. Chase Hubbard commented on member plant Hknsa. Sogo Doll by Tom Kuligowski
  6. Colin Campbell commented on topic "Can anyone identify this orchid?" by Jan E Teitsworth
  7. Sharie Heckaman commented on member plant NEW HYBRID (Lc. Cornelia 'Floralia' x Lc. Moonlight Dream 'SVO Moonlight Kiss' AM/AOS) var. Compact by Vickie Seibert
  8. Carol Holdren commented on member plant Lc. Memory of PienPien Wei by Robert Rand
  9. Robert Rand commented on member plant Bc. Yellow Bird by John Small
  10. Sharie Heckaman commented on member plant Btcm. Hwuluduen Chameleon by Diana Sammy
  11. Sharie Heckaman commented on member plant (C. Leoloddiglossa var. coerulea 'SVO Baby Blue' x C.Interglossa aquinii var. coerulea 'SVO') 'SVO' by Joshua J Peterson
  12. Sandi Block-Brezner commented on topic "Need Help Identifying this Orchid" by Marianna Hynson
  13. Sandi Block-Brezner commented on member plant Bsn. Maikai var. Louise by Sandi Block-Brezner
  14. Vickie Seibert commented on member plant Phal. Ember 'Carmela' by Vickie Seibert
  15. John Small commented on member plant B. nodosa ''H&R' 4N x 'Mas Mejor'' by John Small
  16. Robert H. Findlay commented on topic "Parentage of RLC Memoria Emma Chen" by Dean Haas
  17. Dean Haas commented on article "Have Local Orchids to Sell or Trade?" by Sys Admin
  18. Eileen Pryor commented on member plant Den. chrysotoxum by Tom Kuligowski
  19. Gustavo da Silva commented on member plant Max. callichroma by Gustavo da Silva
  20. Peter Goodin commented on topic "What is this?" by John Small