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

https://dallasksyf683.wpsuo.com/how-weather-affects-electroculture-wind-rain-and-sun

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.