Gardeners experiment with copper or zinc wires wrapped around wooden stakes

https://www.scribd.com/document/1033405803/Combining-Drip-Irrigation-with-ElectroCulture-Smart-Watering-234545

Gardeners experiment with copper or zinc wires wrapped around wooden stakes, forming vertical antennas that channel subtle electrical potentials into soil, reportedly enhancing root development and nutrient uptake.