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

https://telegra.ph/Integrating-ElectroCulture-with-No-Dig-Gardening-Methods-05-15

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.