A little tip i herd .. anyone know about this ?

Vento

Well-Known Member
I keep a big bag of shake in my mother room and the moms don't hurry up and die from this. Don't use anything that you can't mop, clean and disinfect. Your carpet will be ruined by your grow and it will only promote mold and mildew. All poly gives of a gas when constantly bombarded by high intensity light. That's why when you remove your op you'll see photo impressions left in vinyl floors, carpets etc.
I think your kind of missing the point :)

The carpet is not to make the room look nice ... and dont actualy have to be layed down .... its the gas it gives off that we are interested in :)

Read above :)
 

Vento

Well-Known Member
You can just purchase tanks of ethylene gas

http://www.labsafety.com/Ethylene_24529811/?CID=9PP001


40 bucks for the smallest container...I can't imagine you will need much of it, seeing as how a couple of dead leaves seem to have an effect on a grow.
Might be worth it. I def think i will try it out. If im not mistaken, ethylene is an oxidant, which may help push THC to CBD, and moreover, possibly (mere speculation) turn some of the THC non-psychoactive alcohols, into psychoactive THC, without as much curing. I think it may be best administered in a cure, instead of during the grow, It may cause buds to mature early w/o reaching its premium weight. Depends on what you are going for. Brilliant idea however! Hope someone can straighten this whole thing out, cuz I'm just speculating at best.
I think you pretty much have it right there :)... I think it could be used towars the end of the flower period .... But as you pointed out ... The cure stage might allso benifit from it .. and yeah ... it would have to be tiny amounts i think , Worth looking a bit deeper into this .

I have asked UB to come over and take a look at this and see if he / she can spread some light on it :)

Thanks for the link ...i will take a look :)
 

DJ GreenThumb

Active Member
List of plant responses to ethylene


  • Seedling triple response, thickening and shortening of hypocotyl with pronounced apical hook. This is thought to be a seedling's reaction to an obstacle in the soil such a stone, allowing it to push past the obstruction.
  • In pollination, when the pollen reaches the stigma, the precursor of the ethylene, ACC, is secreted to the petal, the ACC releases ethylene with ACC oxidase.
  • Stimulates leaf and flower senescence
  • Stimulates senescence of mature xylem cells in preparation for plant use
  • Inhibits shoot growth except in some habitually flooded plants like rice
  • Induces leaf abscission
  • Induces seed germination
  • Induces root hair growth – increasing the efficiency of water and mineral absorption
  • Induces the growth of adventitious roots during flooding
  • Stimulates epinasty – leaf petiole grows out, leaf hangs down and curls into itself
  • Stimulates fruit ripening
  • Induces a climacteric rise in respiration in some fruit which causes a release of additional ethylene. This can be the one bad apple in a barrel spoiling the rest phenomenon. (I think I would rather have some rotting apples in my flowering room than nasty ass carpet)
  • Affects neighboring individuals
  • Affects gravitropism
  • Stimulates nutational bending
  • Disease/wounding resistance
  • Inhibits stem growth outside of seedling stage
  • Stimulates stem and cell broadening and lateral branch growth also outside of seedling stage
  • Interference with auxin transport (with high auxin concentrations)
  • Inhibits stomatal closing except in some water plants or habitually flooded ones such as some rice varieties, where the opposite occurs (conserving CO2 and O2)
  • Where ethylene induces stomatal closing, it also induces stem elongation
  • Induces flowering in pineapples
It is stuff like this that makes me love growing cannabis soooo much, the science we put into this turns me on, lol
 

Hudsonvalley82

Well-Known Member
List of plant responses to ethylene



  • Seedling triple response, thickening and shortening of hypocotyl with pronounced apical hook. This is thought to be a seedling's reaction to an obstacle in the soil such a stone, allowing it to push past the obstruction.
  • In pollination, when the pollen reaches the stigma, the precursor of the ethylene, ACC, is secreted to the petal, the ACC releases ethylene with ACC oxidase.
  • Stimulates leaf and flower senescence
  • Stimulates senescence of mature xylem cells in preparation for plant use
  • Inhibits shoot growth except in some habitually flooded plants like rice
  • Induces leaf abscission
  • Induces seed germination
  • Induces root hair growth – increasing the efficiency of water and mineral absorption
  • Induces the growth of adventitious roots during flooding
  • Stimulates epinasty – leaf petiole grows out, leaf hangs down and curls into itself
  • Stimulates fruit ripening
  • Induces a climacteric rise in respiration in some fruit which causes a release of additional ethylene. This can be the one bad apple in a barrel spoiling the rest phenomenon.
  • Affects neighboring individuals
  • Affects gravitropism
  • Stimulates nutational bending
  • Disease/wounding resistance
  • Inhibits stem growth outside of seedling stage
  • Stimulates stem and cell broadening and lateral branch growth also outside of seedling stage
  • Interference with auxin transport (with high auxin concentrations)
  • Inhibits stomatal closing except in some water plants or habitually flooded ones such as some rice varieties, where the opposite occurs (conserving CO2 and O2)
  • Where ethylene induces stomatal closing, it also induces stem elongation
  • Induces flowering in pineapples

This translates into worth a shot correct?
 

Vento

Well-Known Member
List of plant responses to ethylene



  • Seedling triple response, thickening and shortening of hypocotyl with pronounced apical hook. This is thought to be a seedling's reaction to an obstacle in the soil such a stone, allowing it to push past the obstruction.
  • In pollination, when the pollen reaches the stigma, the precursor of the ethylene, ACC, is secreted to the petal, the ACC releases ethylene with ACC oxidase.
  • Stimulates leaf and flower senescence
  • Stimulates senescence of mature xylem cells in preparation for plant use
  • Inhibits shoot growth except in some habitually flooded plants like rice
  • Induces leaf abscission
  • Induces seed germination
  • Induces root hair growth – increasing the efficiency of water and mineral absorption
  • Induces the growth of adventitious roots during flooding
  • Stimulates epinasty – leaf petiole grows out, leaf hangs down and curls into itself
  • Stimulates fruit ripening
  • Induces a climacteric rise in respiration in some fruit which causes a release of additional ethylene. This can be the one bad apple in a barrel spoiling the rest phenomenon. (I think I would rather have some rotting apples in my flowering room than nasty ass carpet)
  • Affects neighboring individuals
  • Affects gravitropism
  • Stimulates nutational bending
  • Disease/wounding resistance
  • Inhibits stem growth outside of seedling stage
  • Stimulates stem and cell broadening and lateral branch growth also outside of seedling stage
  • Interference with auxin transport (with high auxin concentrations)
  • Inhibits stomatal closing except in some water plants or habitually flooded ones such as some rice varieties, where the opposite occurs (conserving CO2 and O2)
  • Where ethylene induces stomatal closing, it also induces stem elongation
  • Induces flowering in pineapples
Thats really helpful thanks :)

That kind of reads like an advert to GET SOME ! .... This is turning out to be pretty interesting :)

Thanks again :) +rep
 

DJ GreenThumb

Active Member
This translates into worth a shot correct?
Sure as hell does to me.....but as this states.......

Ethylene (IUPAC name: ethene) is a gaseous organic compound with the formula C2H4. It is the simplest alkene (older name: olefin from its oil-forming property). Because it contains a carbon-carbon double bond, ethylene is classified as an unsaturated hydrocarbon. Ethylene is widely used in industry and also has a role in biology as a hormone.[2] Ethylene is the most produced organic compound in the world; global production of ethylene exceeded 107 million tonnes in 2005.[3] To meet the ever increasing demand for ethylene, sharp increases in production facilities have been added globally, particularly in the Persian Gulf countries.

Seems there should be an easy way to make it without paying anything.....I am thinking rotting apples

Check out the wikipedia entry I got this from way too much good stuff to copy paste it all

http://en.wikipedia.org/wiki/Ethylene
 

DJ GreenThumb

Active Member
what I read is that in "Ripening Rooms" they use it as similar levels as we do with CO2 1200-2000ppm but for only 24-48hrs. I would think we would really need to experiment on how best to use this with cannabis whether it be at low ppm at different stages in the life of the plant to enhance different functions. Like could it be used to stimulate root hairing and growth in veg and to enhance ripening at the end flowering possibly in sync with flushing.......or in the curing room.
 

Vento

Well-Known Member
Sure as hell does to me.....but as this states.......

Ethylene (IUPAC name: ethene) is a gaseous organic compound with the formula C2H4. It is the simplest alkene (older name: olefin from its oil-forming property). Because it contains a carbon-carbon double bond, ethylene is classified as an unsaturated hydrocarbon. Ethylene is widely used in industry and also has a role in biology as a hormone.[2] Ethylene is the most produced organic compound in the world; global production of ethylene exceeded 107 million tonnes in 2005.[3] To meet the ever increasing demand for ethylene, sharp increases in production facilities have been added globally, particularly in the Persian Gulf countries.

Seems there should be an easy way to make it without paying anything.....I am thinking rotting apples

Check out the wikipedia entry I got this from way too much good stuff to copy paste it all

http://en.wikipedia.org/wiki/Ethylene
A good read ... i picked out the part we need to know :)


Ethylene as a plant hormone

Ethylene serves as a hormone in plants.[13] It acts at trace levels throughout the life of the plant by stimulating or regulating the ripening of fruit, the opening of flowers, and the abscission (or shedding) of leaves. Commercial ripening rooms use "catalytic generators", to make ethylene gas, from a liquid supply of ethanol. Typically, a gassing level of 500 ppm to 2,000 ppm is used, for 24 to 48 hours. Care must be taken to control carbon dioxide levels in ripening rooms when gassing, as high temperature ripening (68F) has been seen to produce CO2 levels of 10% in 24 hours.[14]
[edit] History of ethylene in plant biology

Ethylene has been used in practice since the ancient Egyptians, who would gash figs in order to stimulate ripening (wounding stimulates ethylene production by plant tissues). The ancient Chinese would burn incense in closed rooms to enhance the ripening of pears. In 1864, it was discovered that gas leaks from street lights led to stunting of growth, twisting of plants, and abnormal thickening of stems.[13] In 1901, a Russian scientist named Dimitry Neljubow showed that the active component was ethylene.[15] Doubt discovered that ethylene stimulated abscission in 1917.[16] It wasn't until 1934 that Gane reported that plants synthesize ethylene.[17] In 1935, Crocker proposed that ethylene was the plant hormone responsible for fruit ripening as well as senescence of vegetative tissues.[18]
[edit] Ethylene biosynthesis in plants


Plant biosynthesis of ethylene


Ethylene is produced from essentially all parts of higher plants, including leaves, stems, roots, flowers, fruits, tubers, and seedlings.
"Ethylene production is regulated by a variety of developmental and environmental factors. During the life of the plant, ethylene production is induced during certain stages of growth such as germination, ripening of fruits, abscission of leaves, and senescence of flowers. Ethylene production can also be induced by a variety of external aspects such as mechanical wounding, environmental stresses, and certain chemicals including auxin and other regulators".[19]
The biosynthesis of the hormone starts with conversion of the amino acid methionineS-adenosyl-L-methionine (SAM, also called Adomet) by the enzyme Met Adenosyltransferase. SAM is then converted to 1-aminocyclopropane-1-carboxylic-acid (ACC) by the enzyme ACC synthase (ACS); the activity of ACS dertermines the rate of ethylene production, therefore regulation of this enzyme is key for the ethylene biosynthesis. The final step requires oxygen and involves the action of the enzyme ACC-oxidase (ACO), formerly known as the Ethylene Forming Enzyme (EFE). Ethylene biosynthesis can be induced by endogenous or exogenous ethylene. ACC synthesis increases with high levels of auxins, specially Indole acetic acid (IAA), and cytokinins. ACC synthase is inhibited by abscisic acid. to
[edit] Ethylene perception in plants

Ethylene could be perceived by a transmembrane protein dimer complex. The geneencoding an ethylene receptor has been cloned in Arabidopsis thaliana and then in tomato. Ethylene receptors are encoded by multiple genes in the Arabidopsis and tomato genomes. The gene family comprises five receptors in Arabidopsis and at least six in tomato, most of which have been shown to bind ethylene. DNA sequences for ethylene receptors have also been identified in many other plant species and an ethylene binding protein has even been identified in Cyanobacteria.[13]
[edit] Environmental and biological triggers of ethylene

Environmental cues can induce the biosynthesis of the plant hormone. Flooding, drought, chilling, wounding, and pathogen attack can induce ethylene formation in the plant. In flooding, root suffers from lack of oxygen, or anoxia, which leads to the synthesis of 1-Aminocyclopropane-1-carboxylic acid (ACC). ACC is transported upwards in the plant and then oxidized in leaves. The product, the ethylene causes epinasty of the leaves.
One speculation recently put forth for epinasty is the downward pointing leaves may act as pump handles in the wind. The ethylene may or may not additionally induce the growth of a valve in the xylem, but the idea would be that the plant would harness the power of the wind to pump out more water from the roots of the plants than would normally happen with transpiration.
[edit] Physiological responses of plants

Like the other plant hormones, ethylene is considered to have pleiotropic effects. This essentially means that it is thought that at least some of the effects of the hormone are unrelated. What is actually caused by the gas may depend on the tissue affected as well as environmental conditions. In the evolution of plants, ethylene would simply be a message that was coopted for unrelated uses by plants during different periods of the evolutionary development.
[edit] List of plant responses to ethylene


  • Seedling triple response, thickening and shortening of hypocotyl with pronounced apical hook. This is thought to be a seedling's reaction to an obstacle in the soil such a stone, allowing it to push past the obstruction.
  • In pollination, when the pollen reaches the stigma, the precursor of the ethylene, ACC, is secreted to the petal, the ACC releases ethylene with ACC oxidase.
  • Stimulates leaf and flower senescence
  • Stimulates senescence of mature xylem cells in preparation for plant use
  • Inhibits shoot growth except in some habitually flooded plants like rice
  • Induces leaf abscission
  • Induces seed germination
  • Induces root hair growth – increasing the efficiency of water and mineral absorption
  • Induces the growth of adventitious roots during flooding
  • Stimulates epinasty – leaf petiole grows out, leaf hangs down and curls into itself
  • Stimulates fruit ripening
  • Induces a climacteric rise in respiration in some fruit which causes a release of additional ethylene. This can be the one bad apple in a barrel spoiling the rest phenomenon.
  • Affects neighboring individuals
  • Affects gravitropism
  • Stimulates nutational bending
  • Disease/wounding resistance
  • Inhibits stem growth outside of seedling stage
  • Stimulates stem and cell broadening and lateral branch growth also outside of seedling stage
  • Interference with auxin transport (with high auxin concentrations)
  • Inhibits stomatal closing except in some water plants or habitually flooded ones such as some rice varieties, where the opposite occurs (conserving CO2 and O2)
  • Where ethylene induces stomatal closing, it also induces stem elongation
  • Induces flowering in pineapples
[edit] Commercial issues

Ethylene shortens the shelf life of many fruits by hastening fruit ripening and floral senescence. Tomatoes, bananas and apples will ripen faster in the presence of ethylene. Bananas placed next to other fruits will produce enough ethylene to cause accelerated fruit ripening. Ethylene will shorten the shelf life of cut flowers and potted plants by accelerating floral senescence and floral abscission. Flowers and plants which are subjected to stress during shipping, handling, or storage produce ethylene causing a significant reduction in floral display. Flowers affected by ethylene include carnation, geranium, petunia, rose, and many others.[20]
Ethylene can cause significant economic losses for florists, markets, suppliers, and growers. Researchers have developed several ways to inhibit ethylene, including inhibiting ethylene synthesis and inhibiting ethylene perception. Aminoethoxyvinylglycine (AVG), Aminooxyacetic acid (AOA), and silver ions are ethylene inhibitors.[21][22] Inhibiting ethylene synthesis is less effective for reducing post-harvest losses since ethylene from other sources can still have an effect. By inhibiting ethylene perception, fruits, plants and flowers don't respond to ethylene produced endogenously or from exogenous sources. Inhibitors of ethylene perception include compounds that have a similar shape to ethylene, but do not elicit the ethylene response. One example of an ethylene perception inhibitor is 1-methylcyclopropene (1-MCP).
Commercial growers of bromeliads, including pineapple plants, use ethylene to induce flowering. Plants can be induced to flower either by treatment with the gas in a chamber, or by placing a banana peel next to the plant in an enclosed area.
 

Vento

Well-Known Member
what I read is that in "Ripening Rooms" they use it as similar levels as we do with CO2 1200-2000ppm but for only 24-48hrs. I would think we would really need to experiment on how best to use this with cannabis whether it be at low ppm at different stages in the life of the plant to enhance different functions. Like could it be used to stimulate root hairing and growth in veg and to enhance ripening at the end flowering possibly in sync with flushing.......or in the curing room.
Yeah ..when and how much to use at what stages ... if not all stages .

I think its worth an experiment ... so lets get it on :)

Still a bit clueless as to how it effects humans though ...


Ethylene oxide is a gas produced in large quantities in the United States that is used primarily as a chemical intermediate in the production of ethylene glycol, propylene glycol, nonionic surfactants, ethanolamines, glycol ethers, and other chemicals. It has been well established that ethylene oxide can induce cancer, genetic, reproductive and developmental, and acute health effects in animals. The U.S. Environmental Protection Agency is currently developing both a cancer potency factor and a reference concentration (RfC) for ethylene oxide. This study used the rich database on the reproductive and developmental effects of ethylene oxide to develop a probabilistic characterization of possible regulatory thresholds for ethylene oxide. This analysis was based on the standard regulatory approach for noncancer risk assessment, but involved several innovative elements, such as: (1) the use of advanced statistical methods to account for correlations in developmental outcomes among littermates and allow for simultaneous control of covariates (such as litter size); (2) the application of a probabilistic approach for characterizing the uncertainty in extrapolating the animal results to humans; and (3) the use of a quantitative approach to account for the variation in heterogeneity among the human population. This article presents several classes of results, including: (1) probabilistic characterizations of ED10s for two quantal reproductive outcomes—resorption and fetal death, (2) probabilistic characterizations of one developmental outcome—the dose expected to yield a 5% reduction in fetal (or pup) weight, (3) estimates of the RfCs that would result from using these values in the standard regulatory approach for noncancer risk assessment, and (4) a probabilistic characterization of the level of ethylene oxide exposure that would be expected to yield a 1/1000 increase in the risk of reproductive or developmental outcomes in exposed human populations.
 

Vento

Well-Known Member
Oh oh !


Safety

Like all hydrocarbons, ethylene is an asphyxiant and combustable. It has been used as an anesthetic.




DANGER WILL ROBINSON ! ... DANGER .. DANGER !



lol ...Any boffins that can make sence of the above post ?... is it bad for us ?
 

justlearning73

Well-Known Member
I believe in high enough consistrations yes it can be harmful to us. Remember this does happen naturally in nature. We are exposed to this gas everytime we go into our homes to the store, heck even outside. I think that is why they say just a piece of carpet or the old leaves. A little goes along way with plants.
 

Vento

Well-Known Member
I believe in high enough consistrations yes it can be harmful to us. Remember this does happen naturally in nature. We are exposed to this gas everytime we go into our homes to the store, heck even outside. I think that is why they say just a piece of carpet or the old leaves. A little goes along way with plants.
Thanks for that :)

Yeah its going on all around us in the natural cycle .....i wonder how it could be detrmined how many ppm's could be used ... and how often so that it safe in an enclosed area ?

I have to admit right here and now ... Im not a science type of guy as a rule ... but my interest in it has been tweeked since i started growing and found a need to understand a bit more about plant biology ... So most of this is way over my head ....but im really keen to learn and understand anything that can help me and others grow :)
 

DJ GreenThumb

Active Member
I wonder if you could use this to shorten flowering time on long sativas or to just give any strain that extra push to finish. I would be willing to set up a ripening room just to test this out. It will be awhile all my plants still have a week or two before they get flipped to 12/12. Maybe just a small, sealed room with a 400w hps, some bananas and a couple plants, lol

As far as human interaction concerns....stay out of rooms with too many bananas until further notice :p

I keep editing this......but it makes me think if that is who those banana hangers they sell keep the bananas from over ripening.....maybe a banana on it side automaticly know its picked.....if its hung as it is on tree on a hanger maybe it tricks it into thinking it is still alive......
 

justlearning73

Well-Known Member
I am courious about this as well. So if i read this right. In the the beginning and through veg, it helps with roots and leaf growth and then in flower it helps to ripen the "fruit". So keep a piece of carpet or cut leaves in the veg cab. The issues with the flower room is it helps to ripen the fruit faster. So you have to time it right to get the yield you want then put it in to ripen it. Now someone like my self a continues grow, My clones, mothers, and plants vegging are all in the same cab. So adding the carpet or cuttings will be no problem. The flower on the other hand will have multiple stages going on so unless i set up a seperate room (not possible at this time) i cant do this for the ripening. It does seem interesting though. I am planning on moving my grow to another part of my house due to the fact it is in my closet in my room. Kinda hard to have women over to spend the night with ou having to answer questions or freak out. SO i might be able to try the ripening thing in the future. Just thought of something, is this gas used during the day or night? If night when i take my plants for harvest, i pull them out of the flower room and cover with black plastic for 48 hours. Would that be enough time? You know take them out of the flower give the plant a bit of carpet and then cover it up? I wonder if that would be enough time? Sorry if i am rambling im just a little stoned right now.
 

justlearning73

Well-Known Member
Sorry to double post. Just thought of something else. One when leaves die on my plant i just put them on the soil of the pot. So toward the end of the grow they are a few there on the pot at the base of the plant. I have had on average of 8 to 9 plants at a time in my flower room. I leave the dead leaves there so when i water it doesnt dig up the soil so much. Kinda like a mulch i guess? Now i havent noticed anything doing this so how much in trimmings are we talking about to be affective? Sorry more ramblings from a stoned stoner.....
 

tet1953

Well-Known Member
I just did a Yahoo search for carpet and ethylene and it appears that it is quite common as a component of the backing material. There's been plenty on here about this already and how it works on plants etc but I'll just add this. Fruits and some veggies give this gass off as they ripen, and it also hastens the ripening process. I guess that's why once things start to go they go quick.
Those special greenish bags they sell that are meant to keep produce longer actually absorbs ethylene, that's how they work.
 
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