Re: Re: GA3 in seed germination

From: Ted.Held at hstna.com on 2001.05.26 at 06:06:44(6569) GA is supposed to be freely soluble in ethanol (Merck Index). So you could dissolve your appropriate amount in alcohol (try gin or vodka) and add that to your water. That will save you messing around with potassium hydroxide and pH. +More 1000 ppm = 1 gram per liter. That is 3.875 grams per gallon. 250 ppm is one quarter of that. ted.held@hstna.com aroid-l@mobot.org on 05/25/2001 11:02:45 AM Please respond to aroid-l@mobot.org To: Multiple recipients of list AROID-L cc: Subject: Re: Re: GA3 in seed germination Dear Nyles, Many thanks for the info....but as far as pH goes... what number should I be looking for? "7" or is there an acceptable deviation higher or lower? Marc Thanks for the info aroid-l@mobot.org wrote: > Hi, I always make a potassium salt of GA. It's been shown to be more active than other salts, or even pure GA. GA is not freely soluble in water, so the easiest way to do this whole procedure in your living room is to measure out the amount of distilled water into any glass container under a good light. Add the amount of GA that you want. You'll see the powder floating on top of the water. (A good conversion from parts per million (ppm)to something you can deal with is to change it to milligrams per liter...not exact but VERY close) Slowly add potassium hydroxide (KOH) to the mixture while stirring gently. Use very small amounts at a time. At some point the powder will suddenly disappear and go into solution. The Ph should be OK if you haven't overused the potassium hydroxide. If your worried, use litmus paper or a pool Ph test kit. Hope that this helps! Nyles >From: Iza & Carol Goroff >Reply-To: aroid-l@mobot.org >To: Multiple recipients of list AROID-L >Subject: GA3 in seed germination >Date: Thu, 24 May 2001 17:25:04 -0500 (CDT) > >A typical dose for seeds is from 250 to 1000 parts/million. 1 gram should >last much, much longer. The use of GA3 was thoroughly investigated by Dr. >Norman Deno in his Seed Germination and Practice (and in two subsequent >supplements), where he investigated various >approaches for germinating over 5,000 species of plants. GA3 does not >easily dissolve in water. I cannot find my copy of Seed Germination and >Practice to give the the procedure for its dilution, although in the >supplements he has no problem germinating the aroids listed >without the use of GA3, instead using different temperature/time patterns. > >My suggestion is to NOT put all of your eggs (seeds) in one basket. While >GA3 works wonders with some species, others are killed. > >Iza Goroff >Whitewater Wisconsin > >Perhaps someone > >Marc Burack wrote: > > > Based on the info you sent, I think that GA is really more in line what >I am looking for.... > > > > I purchased some yesterday although it seemed more expensive than I >thought... I paid $25 for 1 gram. I really dont know if that is expensive >or not, but obviously since I am going to use small amounts per >application, 1 gram should be good for anywhere from 5-8 uses. > _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

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