STS feminized seeds production: No pollen produced

[xtsho]

I last sprayed about 2 weeks ago and see a couple ball clusters on the bottom branches of 3 plants, but 95% is female flowers (that I can’t harvest). Weird that the STS didn’t seem to work, I tried one time prior to this with the same stock solutions, but only spray at 12/12 switch. Maybe I need to remake the stock solutions, maybe something else was off, any ideas appreciated.

Are you spraying until it's dripping off of the leaves? I've mixed at the same concentration you used and haven't had a plant not reverse. Are you adding something as a surfactant? Because I've seen posts where people are but I never do. You don't want anything interfering with the interaction of the STS and the leaves.

Here's a picture of the latest reversal I did taken on 3/11/2021. You can see that it's dropping pollen naturally like a true male and no pistils anywhere.

 

[smallgrow123]

Are you spraying until it's dripping off of the leaves? I've mixed at the same concentration you used and haven't had a plant not reverse. Are you adding something as a surfactant? Because I've seen posts where people are but I never do. You don't want anything interfering with the interaction of the STS and the leaves.

Here's a picture of the latest reversal I did taken on 3/11/2021. You can see that it's dropping pollen naturally like a true male and no pistils anywhere.

Yes, spraying until dripping off everywhere, especially focusing on making sure all the nodes are dripping. I have been mixing in a few drops of pure castile soap as a surfactant in each batch...maybe that's interfering like you said. I will try mixing up a new batch from the stock solutions without soap. I'm going to try spraying these same plants just for kicks... hope to change them still. Thanks for the tip xtsho, and beautiful pic (my hopes and dreams)!

 

[yabun]

Yes, spraying until dripping off everywhere, especially focusing on making sure all the nodes are dripping. I have been mixing in a few drops of pure castile soap as a surfactant in each batch...maybe that's interfering like you said. I will try mixing up a new batch from the stock solutions without soap. I'm going to try spraying these same plants just for kicks... hope to change them still. Thanks for the tip xtsho, and beautiful pic (my hopes and dreams)!

Did spraying without the soap work?

 

[smallgrow123]

Did spraying without the soap work?

My wife and I had a baby in early May, so I got a little distracted and busy! I started a batch of clones recently and just ordered 2 new 2x4 tents and 2 new LED lights so I have more grow space, as my 3x3 is about a month into flower. Once I get those setup and the clones growing, I will be able to try again without soap.

 

[Alter Jean]

Did spraying without the soap work?

I don't add soap.

Speaking of soap though.. Do you know that brand Ajax?
Ajax is a famous warrior that was said could take down all of Greece.
Always was my favorite soap brand because of that. Because it fights Greasey dishes...

BTW those iso chambers are awesome. @smallgrow123 what kind of filter are you using?
I might PM you..