Gardeners experiment with copper or zinc wires wrapped around wooden stakes

https://www.scribd.com/document/1023926197/Electro-culture-Gardening-for-Tropical-Climates-Heat-and-Humidity-Tips-203265

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.