A basic setup involves a wooden pole, a copper spiral winding upward, and a grounding spike or buried wire

https://medium.com/@travenzajj/copper-vs-zinc-in-electroculture-which-works-best-f0bfe06d6006

A basic setup involves a wooden pole, a copper spiral winding upward, and a grounding spike or buried wire, positioned near crops to capture atmospheric ions and gently influence local electrostatic conditions.