Researchers from Link\u00f6ping University in Sweden have developed a "bioelectronic soil." It can apparently speed up the growth of plants in hydroponic spaces, or farms that grow plants in environments made up of mostly water. After integrating the engineered \u2018eSoil\u2019 into the framework where seedlings grow, researchers discovered that sending electrical signals through the soil made barley plants grow 50 percent more on average.<\/p>\n

This is done through a conductive polymer within the soil and applying a voltage as small as 0.5V on the eSoil to stimulate the roots electrically.<\/p>\n