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#1
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Ethylene gas control in the floral industry
http://www.safnow.org/publications/f...nts/FF_612.pdf
This is an article called Ethylene: A Stealth Destroyer, by Cindy Hoogasian. I am interested in comments from the peanut gallery. :-) I thought it was very interesting. Talks about Ethylene scrubbers and removing it from the environment, and provides links to resources and products to help reduce it in your growing environment. Phalaenopsis are known to be very sensitive to this gas and bud blast is often the result as well as premature flower drop, where flowers open that should last for several months but wilt only after several weeks. The article talks about the gas in floral production in general and does not mention orchids. In a greenhouse, not only is this gas produced by the plants themselves and the combustion process of our heaters, it is produced during the breakdown of potting media and as a byproduct of molds and bacteria and plant debris like leaves and flowers that drop under benches. It is also produced in the ground under the greenhouse as part of the life-cycle processes of organisms living in the ground. Even with a properly vented heater, it is possible in a well sealed greenhouse to see high levels of Ethylene. Here are the first few paragraphs. ETHYLENE IS TO PLANT LIFE WHAT carbon monoxide is to human life: A colorless, odorless, tasteless gas that kills. Although everyone is susceptible to CO2, only some cut flowers are sensitive to ethylene - it kills discriminately, but injures relentlessly. Controlling ethylene is critical in the floral industry. Some studies show that ethylene is to blame for 30 percent of the industry's crop losses. Unchecked ethylene adversely affects how cut flowers perform in consumers' homes and diminishes their value. It doesn't take much ethylene to do damage - concentrations as low as 0.5 to 1 parts per million can diminish cut-flower longevity. There are two ethylene sources: Systemic ethylene, which is produced by the flower itself, and environmental ethylene, which is produced by fruit, gasoline engines, cigarette smoke, scraped stems, leafy debris in coolers, bacteria-laden buckets of solution/water and Botrytis-infected floral material. |
#2
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Add to that, those "99.9% efficient" non-vented propane or NG
heaters/fireplaces/gas logs. They are virtual death to orchids. I was once told that orchids were taken into mines as an early warning indicator of gasses that might be noxious to humans. What I thought was cold injury was actually ethylene damage. I ripped out the non-vented heater and installed an exterior-vented heater. So far, so good. No bud blast this Fall/Winter. Jeff "Al" wrote in message ... http://www.safnow.org/publications/f...nts/FF_612.pdf This is an article called Ethylene: A Stealth Destroyer, by Cindy Hoogasian. I am interested in comments from the peanut gallery. :-) I thought it was very interesting. Talks about Ethylene scrubbers and removing it from the environment, and provides links to resources and products to help reduce it in your growing environment. Phalaenopsis are known to be very sensitive to this gas and bud blast is often the result as well as premature flower drop, where flowers open that should last for several months but wilt only after several weeks. The article talks about the gas in floral production in general and does not mention orchids. In a greenhouse, not only is this gas produced by the plants themselves and the combustion process of our heaters, it is produced during the breakdown of potting media and as a byproduct of molds and bacteria and plant debris like leaves and flowers that drop under benches. It is also produced in the ground under the greenhouse as part of the life-cycle processes of organisms living in the ground. Even with a properly vented heater, it is possible in a well sealed greenhouse to see high levels of Ethylene. Here are the first few paragraphs. ETHYLENE IS TO PLANT LIFE WHAT carbon monoxide is to human life: A colorless, odorless, tasteless gas that kills. Although everyone is susceptible to CO2, only some cut flowers are sensitive to ethylene - it kills discriminately, but injures relentlessly. Controlling ethylene is critical in the floral industry. Some studies show that ethylene is to blame for 30 percent of the industry's crop losses. Unchecked ethylene adversely affects how cut flowers perform in consumers' homes and diminishes their value. It doesn't take much ethylene to do damage - concentrations as low as 0.5 to 1 parts per million can diminish cut-flower longevity. There are two ethylene sources: Systemic ethylene, which is produced by the flower itself, and environmental ethylene, which is produced by fruit, gasoline engines, cigarette smoke, scraped stems, leafy debris in coolers, bacteria-laden buckets of solution/water and Botrytis-infected floral material. |
#3
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Add to that, those "99.9% efficient" non-vented propane or NG
heaters/fireplaces/gas logs. They are virtual death to orchids. I was once told that orchids were taken into mines as an early warning indicator of gasses that might be noxious to humans. What I thought was cold injury was actually ethylene damage. I ripped out the non-vented heater and installed an exterior-vented heater. So far, so good. No bud blast this Fall/Winter. Jeff "Al" wrote in message ... http://www.safnow.org/publications/f...nts/FF_612.pdf This is an article called Ethylene: A Stealth Destroyer, by Cindy Hoogasian. I am interested in comments from the peanut gallery. :-) I thought it was very interesting. Talks about Ethylene scrubbers and removing it from the environment, and provides links to resources and products to help reduce it in your growing environment. Phalaenopsis are known to be very sensitive to this gas and bud blast is often the result as well as premature flower drop, where flowers open that should last for several months but wilt only after several weeks. The article talks about the gas in floral production in general and does not mention orchids. In a greenhouse, not only is this gas produced by the plants themselves and the combustion process of our heaters, it is produced during the breakdown of potting media and as a byproduct of molds and bacteria and plant debris like leaves and flowers that drop under benches. It is also produced in the ground under the greenhouse as part of the life-cycle processes of organisms living in the ground. Even with a properly vented heater, it is possible in a well sealed greenhouse to see high levels of Ethylene. Here are the first few paragraphs. ETHYLENE IS TO PLANT LIFE WHAT carbon monoxide is to human life: A colorless, odorless, tasteless gas that kills. Although everyone is susceptible to CO2, only some cut flowers are sensitive to ethylene - it kills discriminately, but injures relentlessly. Controlling ethylene is critical in the floral industry. Some studies show that ethylene is to blame for 30 percent of the industry's crop losses. Unchecked ethylene adversely affects how cut flowers perform in consumers' homes and diminishes their value. It doesn't take much ethylene to do damage - concentrations as low as 0.5 to 1 parts per million can diminish cut-flower longevity. There are two ethylene sources: Systemic ethylene, which is produced by the flower itself, and environmental ethylene, which is produced by fruit, gasoline engines, cigarette smoke, scraped stems, leafy debris in coolers, bacteria-laden buckets of solution/water and Botrytis-infected floral material. |
#4
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The orchids being taken into mines has to be pure BS. The reaction time is
probably way to slow to be of value to humans. -- Ray Barkalow - First Rays Orchids - www.firstrays.com Plants, Supplies, Books, Artwork, and Lots of Free Info! .. "P.J. Bloodworth" wrote in message nk.net... Add to that, those "99.9% efficient" non-vented propane or NG heaters/fireplaces/gas logs. They are virtual death to orchids. I was once told that orchids were taken into mines as an early warning indicator of gasses that might be noxious to humans. What I thought was cold injury was actually ethylene damage. I ripped out the non-vented heater and installed an exterior-vented heater. So far, so good. No bud blast this Fall/Winter. Jeff "Al" wrote in message ... http://www.safnow.org/publications/f...nts/FF_612.pdf This is an article called Ethylene: A Stealth Destroyer, by Cindy Hoogasian. I am interested in comments from the peanut gallery. :-) I thought it was very interesting. Talks about Ethylene scrubbers and removing it from the environment, and provides links to resources and products to help reduce it in your growing environment. Phalaenopsis are known to be very sensitive to this gas and bud blast is often the result as well as premature flower drop, where flowers open that should last for several months but wilt only after several weeks. The article talks about the gas in floral production in general and does not mention orchids. In a greenhouse, not only is this gas produced by the plants themselves and the combustion process of our heaters, it is produced during the breakdown of potting media and as a byproduct of molds and bacteria and plant debris like leaves and flowers that drop under benches. It is also produced in the ground under the greenhouse as part of the life-cycle processes of organisms living in the ground. Even with a properly vented heater, it is possible in a well sealed greenhouse to see high levels of Ethylene. Here are the first few paragraphs. ETHYLENE IS TO PLANT LIFE WHAT carbon monoxide is to human life: A colorless, odorless, tasteless gas that kills. Although everyone is susceptible to CO2, only some cut flowers are sensitive to ethylene - it kills discriminately, but injures relentlessly. Controlling ethylene is critical in the floral industry. Some studies show that ethylene is to blame for 30 percent of the industry's crop losses. Unchecked ethylene adversely affects how cut flowers perform in consumers' homes and diminishes their value. It doesn't take much ethylene to do damage - concentrations as low as 0.5 to 1 parts per million can diminish cut-flower longevity. There are two ethylene sources: Systemic ethylene, which is produced by the flower itself, and environmental ethylene, which is produced by fruit, gasoline engines, cigarette smoke, scraped stems, leafy debris in coolers, bacteria-laden buckets of solution/water and Botrytis-infected floral material. |
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