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

https://remingtonyydy233.lucialpiazzale.com/electroculture-start-to-finish-a-90-day-plan

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.