New sexing technique

Some of my grower friends are using a new technique for sexing new plants.
They change lighting from 18/6 to 36 hours of continuous darkness then change it to 12/12. The males start showing in 2 or 3 days, females a few days later. What do you think about this?

Smokestak el Ropo,
Ashland, Missouri

I think this is a very interesting way of determining sex or quickly forcing flowering. It's worth an experimental try. I have several ideas about it. It would be a very efficient way of using the cut method ? taking a cutting to check the clone mother's sex. Also, when forcing a plant it might cut the length of the conversion period and lessen vertical growth.

Readers with grow questions (or answers) should send them to Ed at:
Ask Ed, PMB 147, 530 Divisadero St., San Francisco, California 94117, USA
You can also email Ed at AskEd@quicktrading.com, and send queries via his website at www.quicktrading.com.
All featured questions will be rewarded with a copy of Marijuana Question? Ask Ed. Sorry, Ed cannot send personal replies to your questions.