Silver thiosulfate- aka sts feminization

Chronicdogg said:

Hi, just wrapping up the season with a major disappointment in my grow room, my feminization experiment with the binary silver thiosulfate solution, a.k.a STS, I followed the directions provided with the solution, prepared the solution, and sprayed the FLOWERING clones at almost 4 weeks into flower, repeated the process once a day four days in a row until runoff, the pollen sacks did form out of the buds almost 60 DAYS after the final treatment, the pods reached maturity about 90 DAYS after the final treatment and had very little pollen inside, does anyone have experience with this method? does anyone know where I went wrong? do I need to spray full plants rather than clones? Do i need to spray in Veg? any feedback is greatly appreciated
Sincerely Doc. Chronic

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Esdreel said:

I bought, too expensive, and only 100G packaging, almost a $ 50.
Can you tell me how to use it? After switching 12/12 spray?

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polo the don said:

You need to start the STS application a week or so before the flip to 12/12.
What you are trying to do is halt the ethelyne production, which makes female flowers, so the only option is for the plant is to put out male flowers. Do it a week or two before flowering and a couple of weeks after the flip to 12/12 so the plant makes male flowers instead of female flowers in the designated places. Collect pollen, pollinate.

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polo the don said:

You need to start the STS application a week or so before the flip to 12/12.
What you are trying to do is halt the ethelyne production, which makes female flowers, so the only option is for the plant is to put out male flowers. Do it a week or two before flowering and a couple of weeks after the flip to 12/12 so the plant makes male flowers instead of female flowers in the designated places. Collect pollen, pollinate.

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vostok said:

Whenever I spray I tend to start in late veg, the deal here is you are attempting to herm a female plant into giving you a hermed flower with hermed pollen
to make only female seeds to make female? plants, attempting to change sex once its triggered is just gay?

I also spray 2x times per day for 2 weeks
in a purpose built tent,
just a light spray on the lower branches usually does it,
the pollen from one flower can easily seed 5 plus females​

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LordDiesel said:

What molarity of STS would either of you recommend? Only thing I've found is for making a .02 M STS stock solution from Sodium Thiosulfate and Silver Nitrate.
http://www.sigmaaldrich.com/life-science/molecular-biology/plant-biotechnology/tissue-culture-protocols/silver-thiosulfate.html

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Chronicdogg said:

Thanks Vostok But by spraying just the lower branches wont the rest of the plant herm as well ?

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polo the don said:

This is the only one I've ever used.
http://www.amazon.com/gp/aw/d/B008OAI6OA/ref=mp_s_a_1_sc_1?qid=1415218856&sr=8-1-spell&pi=AC_SX110_SY165_QL70

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LordDiesel said:

Thanks, a bit expensive for so little plus no tell how old it is... I will continue to research and look for acceptable molarity range to make my own. Sodium Thiosulfate is around $7.95 for 500g. (lab grade) and Silver Nitrate (lab grade) is around $40 for 16oz. Depending on molarity you could make a gallon or so probably.

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vostok said:

lol... the real fun is turning a silver dollar
into colloidal silver with just 3x 9 volt batteries
or buy in some silver rods,
work just as well!​

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