We hope you have enjoyed the SRGC Forum. You can make a Paypal donation to the SRGC by clicking the above button


Author Topic: ga3  (Read 104 times)

Véronique Macrelle

  • Full Member
  • ***
  • Posts: 242
  • Country: fr
ga3
« on: November 19, 2019, 09:06:00 AM »
Is ga3 not recommended for particular species, genus ?


 and on the contrary for which species is it particularly effective?

I want to organize a Ga3 workshop for people who seed, and who are not too much far from me.
 I used it at home the last year on of numerous kinds, without its being always one sucked from the first spring. On the contrary, I saw germination from better on Clematis, for instance.

Hannelore

  • Full Member
  • ***
  • Posts: 177
  • Country: de
    • The World of Neomarica
Re: ga3
« Reply #1 on: November 19, 2019, 09:55:37 AM »
Hallo Véronique,

just a tip for your workshop:

After my experience one of the most common mistakes in using ga3 is the use of the wrong dissolvent. Ga3 is not soluble in water, so it is solved first in some drops of alcohol and the mixture then filled up with destilled water. But using pure alcohol (ethanol) from the pharmacie is a must. Denatured alcohol (alcool à brûler) contains substances that destroy the effect of ga3 by altering its chemical structure or killing the embryos during the germinating process.

BW
Hannelore
A hobby is a grind you would never do for money
http://www.neomarica.de/English/

Véronique Macrelle

  • Full Member
  • ***
  • Posts: 242
  • Country: fr
Re: ga3
« Reply #2 on: November 19, 2019, 10:12:34 AM »
thank you for this precision

Alan_b

  • 'finder of the light'
  • Hero Member
  • *****
  • Posts: 3886
  • Country: england
Re: ga3
« Reply #3 on: November 19, 2019, 11:02:07 AM »
I had to look up GA3.  For the chemists amongst us it is: (3S,3aS,4S,4aS,7S,9aR,9bR,12S)-7,12-Dihydroxy-3-methyl-6-methylene-2-oxoperhydro-4a,7-methano-9b,3-propenoazuleno[1,2-b]furan-4-carboxylic acid.  For those who prefer shorter names it is Gibberellic acid. 

Here is a link to the Wikipedia entry: https://en.wikipedia.org/wiki/Gibberellic_acid thence a link to why you might want to use it for seed germination: http://www.crfg.org/tidbits/gibberellic.html 
Almost in Scotland.

 

In Association with Amazon.co.uk


Scottish Rock Garden Club is a Charity registered with Scottish Charity Regulator (OSCR): SC000942