A basic setup involves a wooden pole, a copper spiral winding upward, and a grounding spike or buried wire
https://lanedhan819.tearosediner.net/garden-energetics-aligning-electroculture-with-sun-wind-and-soil-1
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.