Feminizing Seed Spray - Advice?

GangaDownUnder

GangaDownUnder

Well-Known Member
I just took PPM reading from them and there is definitely a lot of something in there.

Part A Silver Nitrate was 484PPM
Part B Sodium Thiosulfate was 4520PPM

So its in there and didn't work for some other reason, or there is something else in there (which seems unlikely).
 
T

TerryTeacosy

Well-Known Member
GangaDownUnder said:
Cheers. That's the way to check it seems. Unfortunately I don't have sulfuric acid lying around haha
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I searched Bunnings for availability of Sulphuric Acid for you, but just got generic "acid" results. You could try trawling through the results of a similar search. 'Pretty sure I've seen it somewhere in the big green shed.

Failing that, chemical/lab supply mobs would have it, but it might not be a mail-order thing as it would be considered DG.

Good luck!
 
OldMedUser

OldMedUser

Well-Known Member
GrodanLightfoot said:
Seen lots of boron deficient breeders claiming their males were sterile. No shit?
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Boron, like zinc, is an often overlooked micro-nutrient imo but I didn't know it was related to the viability of the pollen. I'll add a bit of both during veg and flowering periods just to make sure they get some at all. A little selenium as well.

Interesting.

:peace:
 
OldMedUser

OldMedUser

Well-Known Member
GangaDownUnder said:
Well, the STS doesn't seem to have worked for me at all.

I first applied it on August 18 to three plants (4 days before flip), then applied it every four days until September 4, after which I applied it every three days until afew days ago. It was eleven applications in just over 4 weeks with no results. The branches I applied it to are pushing out female flowers just like the rest of the plant. No difference. I'm not sure what went wrong. I followed the directions and other tips I found online. I completely doused the stems and nodes each application to the point it was fully wetted and running down the branch. And I increased the strength of the STS (less dilution with water) for the last week.

Could the STS spray I bought be dodgy? I stupidly bought a pre-made Part A + Part B STS Spray from ebay (OzSTS), after which I realised I could buy more silver nitrate and sodium thiosulfate than I'll ever need for less than I paid for the pre-made spray. Yep, I'm an idiot.

Whatever the reason..its a bit annoying. Not the end of the world but it was a waste of money, and I'm going to have to risk one more seed purchase from overseas now. Fantastic! sigh. At least I can get some genetics that a prefer.
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The two parts should last for a long time until mixed to produce the final STS. I made up two 500ml brown bottles of each back on Jan. 29 /20 and still use it. I'll mix up a 500ml bottle of STS for spraying and that's about enough for one run so start with a fresh mix for each. I'm spraying a couple of Cherry Noir plants right now and they just got their 2nd spray last night. These were plants I had out in the wife's greenhouse and started flowering on their own a few weeks ago so hopefully they work. Each plant is from a different mother so I want to cross them and make S1 seeds with each.

I've doubled up on the amount I use when I mix the STS and still don't see any real damage being done to the leaves like some I've seen posted. I add a few drops of blue Dawn dish soap to the STS so it sticks a bit better. I also got one of those pump-up sprayers made for BBQs. Has a nozzle like a spray paint can and seems to spray much finer droplets tho I have no idea if it makes any difference.

7/7 plants I've sprayed all gave good pollen.

:peace:
 
OldMedUser

OldMedUser

Well-Known Member
GangaDownUnder said:
Cheers. That's the way to check it seems. Unfortunately I don't have sulfuric acid lying around haha
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Battery acid is sulfuric and can be got at auto supply stores or pop the top off a car battery and suck a little out. The lead contamination shouldn't affect the test. Could just put a little of the silver nitrate sol'n on your skin and it should turn black. It's pretty dilute tho so may not react with skin enough.

:peace:
 
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