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The myth of triacontanol

hitthedumpster

New member
While trying to decide on research for graduate school, there was some interesting information on triacontanol that was uncovered that should be shared with everyone. Hopefully this will help keep someone from wasting their time on this bogus "plant growth regulator."

The first suggestion that there was a novel PGR to be discovered in the cuticle waxes of plants is Ries' paper entitled Triacontanol: a new naturally occurring plant growth regulator, published in the prestigious journal Science by Stanley Ries, a professor of horticulture at Michigan State University. Prior to his death in 2012, Dr. Ries spent 40 years in the horticulture department there.

It was during this time that he "discovered" that alfalfa meal and its solvent extracts were able to enhance the growth of food crops such as rice, corn, and barley.

After a spate of activity by industry, interest in triacontanol waned, although it has a certain following in India. A number of threads here and elsewhere suggest it has a popular following, and it is easy to find triacontanol sold on eBay and through hydroponics suppliers.

So it was with some interest that I found someone with an established history with Dr. Ries and his work; that individual wishes to remain anonymous, and there's nothing I can do to change that so skepticism on the part of you, dear reader, is more than welcome. In that I had no desire to waste several years chasing after some mythical ghost, I thought I would do my due diligence and I am thankful I did.

Frankly, Ries was a domineering professor who demanded results. Whether done to please him or to produce results for their own gratitude, technician(s) would fudge the data. This was simply done by taking plants that were randomized for treatment, and then later- subtly- sorted by size, putting the smaller plants in the "control" group, and the larger plants in the treated group. Being the 1970s, it was easier to do this than it would be now, and the positive results were published. Ries convinced himself- and his family- that he was in line for the Nobel Prize.

Such a powerful growth regulator would never escape the attention of agribusiness, and they swept in with their own questions and tests. Having built his house of cards, Ries had to defend his ideas in the absence of data supporting his ideas by publishing this paper.

"Specificity of 1-triacontanol as a plant growth stimulator and inhibition of its effect by other long-chain compounds" is a fascinating paper, noting that "Octacosanol inhibited the response of rice seedlings to 2.3 x 10(-8) M TRIA at concentrations as low as 2.4 x 10(-12) M."

While triacontanol is C30, octacosanol is C28. What Ries is trying to say here is that triacontanol that is contaminated with as little as 0.1% octacosanol doesn't work. He did this to buy some time, as heavy-duty chemists with the agribusiness companies were starting to see the cracks in his reasoning. This sent them back to the drawing board, having to re-run experiments with high purity triacontanol.

Since Ries' original work, patents were filed. They stopped not long after his second paper because nobody could reproduce his results.

Since then, triacontanol has become a bit of a legend. If they get negative results, then they must not be using it right- too dilute, too concentrated, wrong solvent, applied to the wrong part of the leaf, applied during the wrong phase of the moon, sacrificed the wrong breed of goat in the name of the wrong diety, whatever. All signs that triacontanol is weapons-grade hokum, and I'm certain my words here will not change the minds of many of you. That's fine. I'm not selling anything, and this is a throwaway account because I'm not looking for opprobrium nor a drawn-out discussion on how this is all obviously wrong and stupid because your experimental wishes and dreams show otherwise. My own experiments showed absolutely no difference, but there was the good fortune in finding someone with firsthand experience under Ries who was kind enough to provide me with the details that helped me fit puzzle pieces into place.

Perhaps there are questions I can answer, but otherwise- my source is anonymous, and my paltry grad school salary doesn't include me defending my statements from skeptics so I don't really know what else to include here. The take-away message would be not to spend your time or money on triacontanol; it's a total dud, its use as a PGR a total falsehood, produced from bad science. It's just a wax, nothing more. So let your attacks come; I don't care.
 

Only Ornamental

Spiritually inspired agnostic mad scientist
Veteran
I always wondered about his publications... there are several inconsistencies and weird things in there...
Thanks for sharing! Unfortunately, that professor isn't/wasn't the only one doing stuff like that in the name of publish or parish ;( .
 

TnTLabs

Active member
thanks for the post! very interesting..
i use it for veg only and get the praying effect the day after...
using it in mid flower will give you foxtailing... so not soo ideal.. less is more
it does something, but yeah maybe not worth the $$
 

who dat is

Cave Dweller
Veteran
Interesting to see since I just got back from the store with some Alfalfa meal. Oh well, it's still got some NPK and will be top dressed anyways. Food for the plants. :dunno:
 

JKD

Well-known member
Veteran
The 1977 study the OP refers to may have been shown to be flawed.

But here are 2300 others; from that 1977 paper to the most recent research published this year:

https://scholar.google.co.nz/scholar?q=plant+growth+regulator+triacontanol&btnG=&hl=en&as_sdt=0,5

Within these search results are no studies specific to Cannabis. It may however be possible to extrapolate results from tomato and rose for fruit/flower production and basil for essential oils. In those studies recommended use as determined by greatest improvement in yield is as foliar spray rather than soil application, with TRIA at 1ppm - before budset for flowering varieties.
 
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Imagenetic2935

New member
This is absolutely false.
Tria is pretty effective and the main ingredient in many popular supplements such as Snow Storm Ultra and Purple Maxx. Advanced Nutrients Nirvana is another.

Does cause foxtailing in flower, but the extra Trichomes I feel make up for it.
 

Imagenetic2935

New member
This is absolutely false.
Tria is pretty effective and the main ingredient in many popular supplements such as Snow Storm Ultra and Purple Maxx. Advanced Nutrients Nirvana is another.

Does cause foxtailing in flower, but the extra Trichomes I feel make up for it.
 

Roger Shrubber

New member
i use it now, and i've used it in the past, it works, people just expect too much out of it.
they expect to get brassinoid effects from tria, and they expect to get cartoon beanstalk effects from brassinoids.
if used properly it can cut 2 to 3 weeks of the average veg time, and if used with brassinoids, the plant will be 50% + larger, with more branches and more bud sites
 

TnTLabs

Active member
i use it now, and i've used it in the past, it works, people just expect too much out of it.
they expect to get brassinoid effects from tria, and they expect to get cartoon beanstalk effects from brassinoids.
if used properly it can cut 2 to 3 weeks of the average veg time, and if used with brassinoids, the plant will be 50% + larger, with more branches and more bud sites

hey roger.. welcome and thanks for the post. pls share your application rates etc..
thanks
 

Roger Shrubber

New member
1 ppm of tria with .5 gram of brassinoid and 1/8 tsp of epsom salts in a quart spray bottle, spray thoroughly every other week up to the second week of flower.
 

Roger Shrubber

New member
and it works better at 8.0 ph, not sure of the exact science behind that or the epsom salts, but i've read that both improve the absorbtion rate in pdfs that i barely understood 8)
 

pelican1020

New member
Interesting OP. Thanks for posting. I've been using Tria for a while now, maybe a year, and I've been wondering if I'm using it wrong, or if the differences are subtle so I miss them but I've not experienced any notable "that one is definitely stronger". I was just chalking it up to my noobness.
 
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