Fuente: WIPO "tomato" An electrochemical cell has an active alloy anode including an active alloy and a passive alloy cathode including a passive alloy with the active alloy having a higher reduction potential than the passive alloy within growth media. The active alloy anode and the passive alloy cathode are positioned to drive a plurality of transport ions into a plant in some embodiments to enhance plant growth and to kill weeds in other embodiments.