Mods please excuse the placement of this post, I was unsure of the correct area.
Just going through some good reads and would like to share it with people. I take no claim to anything, just passing good things along! Happy weekend all! 
BEHIND THE SMOKE AND MIRRORS: REFLECTIONS
ON IMPROVING CANNABIS PRODUCTION AND
INVESTIGATING MEDICAL POTENTIAL
Great post! Thank you very much. 
@Magu My pleasure, quite a bit to go through but very informative!
Very informative and accessible studies with some actionable intel. Thanks for sharing that link.
Here are two tidbits I gleaned:
> Based on the results of this study, we recommend providing plants with a nutrient solution containing N and P at approximately 194 and 59 mg L–1, respectively, to achieve maximal inflorescence yield.
Meaning a flowering nute ratio of 3.3 parts Nitrogen to 1 part Phosphorus was optimal, and variations in potassium concentration didn’t matter much.
And this:
> Our results showed that spraying whole plants with STS once is more efficient than the application of STS on shoot tips
Damn Skippy, I’ve been doin that wrong!
Good post,
-Grouchy
Which paper was this in. I did it wrong but want to read this paper first as the reversal went good,
@G-paS
Page 164 of the available PDF I believe is what you may be interested in?
Production of Feminized Seeds of
High CBD Cannabis sativa L. by
Manipulation of Sex Expression and
Its Application to Breeding
I was being a little snarky there.
I’ve done it both ways and I think what the paper is expressing is that “maximizing” the production of male flowers you should spray the entire plant. @LoveDaAutos has shown that just dabbing selected nodes with a paintbrush of STS works fine for selective pollination.
That makes sense and also agrees with experience.
-Grouchy
I use homemade colliodal silver. Only the part I spray will produce male flowers. Sometimes I do the whole plant or specific branches depending on how many seeds I want.
I soaked mine and then it was recommended I just do the new shoots. I also saw a tutorial saying not to over do the silver. I am just learning and have only done the one run. Starting a second shortly.