Yea, its been "known" for some time that electric feilds can promote plant growth but it seems that the research has been largely neglected.

Electro culture is the use of electricity of small power to improve plant germination, growth, and yield. It is a field not yet fully explored by scientists, although it is as old as the study of electricity itself. As long ago as 1775, a professor at the University of Turin (Italy) stated that nature makes extensive use of atmospheric electric power for promoting vegetation.
Experiments in plant electroculture have shown that plants grow faster if subjected to a slight external electrical charge -- not a 110-jolt, mind you, but a very light current..



Not too much info on this around. I suggest experimenting to find the right formula. Supposedly the plants will grow amazingly better. The end result is more potent bud and more of it.