originally posted by Kite HighSoma employs "Rodelization" to create fems. He allows the plant (female) to enter senescence, past the peak of potency for the survival trait to kick in and cause male flowers to collect pollen from. IMO this is the worst possible method and has the unintentional promotion of the survival trait as it is employed in the process.
STS is the most widely used method by fem seed breeders as it is inexpensive, safe, easy, and dependable. I already posted previously how to employ this technique and where to obtain the chemicals. You only need to spray 2 or at the most 3 times, a week apart starting the first day of initiating the flower cycle of 12/12 known as the flip.
Colloidal silver also works but you need spray much more often.
Gibberellic acid has other potential effects which are not worth the extra effort.
I have never had a plant treated with STS as in my previous post the did not produce pollen, so IMO it is the better choice and the method I employ exclusively. It as well as colloidal silver have nothing to do with the survival trait and therefore botanically impossible to encourage the dreaded "herman" survival gene/trait.